Wulf's Various Things - linux

Add display modelines

Anonymous (anonymous@undisclosed.example.com) — 2023-11-08T19:32:22+00:00

Add display modelines If a resolution isn't available in X while the monitor should support it, the modeline can be added manually. First get the port names of the connected monitors: xrandr Screen 0: minimum 320 x 200, current 4080 x 1956, maximum 16384 x 16384 DP-1 connected primary 1920x1200+1080+432 (normal left inverted right x axis y axis) 518mm x 324mm 1920x1200 59.95*+ 1920x1080 60.00 1600x1200 60.00 1680x1050 59.88 1280x1024 60.02 1280x9…

ALSA

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

ALSA Disable specific sound cards (i.e. ATI HDMI when not in use): This command shows all physical cards ALSA identified: cat /proc/asound/cards This command provides more details: aplay -l Identify the relevant kernel module using lsmod | grep snd

Apache Logs

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

Apache Logs email unique php errors in apache logs: #!/bin/bash # Mail out PHP errors that are in the apache error log. # Note PHP's log_errors must be turned on # Ben Dowling - www.coderholic.com errorLog=/var/log/apache2/error.log # Error log location email= # Send report here # Pull out the lines that mention PHP, and use AWK to get the column we're interested in errors=$(cat $errorLog | grep PHP | awk -F'] ' '{print $5}') # Remove referer information, sort, and remove dup…

Create Appimage

Anonymous (anonymous@undisclosed.example.com) — 2024-10-03T10:14:24+00:00

Create Appimage This description is for manually creating an appimage which is a self contained binary with all dependencies and libraries to be able to run on any system. mkdir Linphone.AppDir cd Linphone.AppDir wget https://github.com/AppImage/AppImageKit/releases/download/continuous/AppRun-x86_64 mv AppRun-x86_64 AppRun chmod 755 AppRun mkdir -p Linphone.AppDi…

apt hold

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

apt hold Prevent packages from auto-updated via apt: sudo apt-mark hold packagename Show all holds: apt-mark showhold Remove mark: sudo apt-mark unhold packagename Same for dpkg: echo "packagename hold" | sudo dpkg --set-selections dpkg --get-selections | grep hold

apt errors

Anonymous (anonymous@undisclosed.example.com) — 2024-08-19T09:35:22+00:00

apt errors apt key error When apt-get update shows the following error with only debian repositories: W: There is no public key available for the following key IDs: The simple fix is to install the debian-archive-keyring package and repeat the update process

Arch Linux

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

Arch Linux HTTP Download: Virtualbox Image: Auto-install script: Auto-install server script (bare minimum):

Audio buzzing on idle

Anonymous (anonymous@undisclosed.example.com) — 2023-11-23T01:28:48+00:00

Audio buzzing on idle When a constant buzzing sound is emitted when no sound is playing, but the buzzing goes away during playback, this could be an issue with the device not liking to be suspended when not in use and thus 'unowned'. This can be sorted by disabling the suspend functionality. A different driver/kernel module may fix the underlying issue:

Auto-mount/unmount samba shares

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

Auto-mount/unmount samba shares Auto-mount/unmount samba shares when connecting to VPN, add UUID based on /var/log/syslog output of script: #!/bin/bash #/etc/NetworkManager/dispatcher.d/vpnshare.sh IF=$1 STATUS=$2 CONN=$CONNECTION_UUID if [ "$IF" == "ppp0" ] then case "$2" in vpn-up) logger -s "VPN Share Script up triggered $CONN" if [ -n "`/sbin/ip addr show $IF to 192.168.99.0/24`" ]; then logger -s "Mounting Main VPN share" …

bash autocomplete

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

bash autocomplete Fixing missing bash autocomplete entries

Bash colors

Anonymous (anonymous@undisclosed.example.com) — 2025-10-27T11:21:01+00:00

Bash colors Foreground colours: # Reset Color_Off='\033[0m' # Text Reset # Regular Colors Black='\033[0;30m' # Black Red='\033[0;31m' # Red Green='\033[0;32m' # Green Yellow='\033[0;33m' # Yellow Blue='\033[0;34m' # Blue Purple='\033[0;35m' # Purple Cyan='\033[0;36m' # Cyan White='\033[0;37m' # White # Bold BBlack='\033[1;30m' #…

Compress/Archive tips

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

Compress/Archive tips Broken Archives To restore what's possible from a zip file under linux, use the following command: zip -FF broken.zip --out saved.zip For rar files, use the following command: unrar x -kb broken.rar Archive Remote Folder

Cinnamon Menu

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

Cinnamon Menu Add a custom Cinnamon Menu Folder for a user: mkdir ~/.local/share/desktop-directories vi ~/.local/share/desktop-directories/customfolder.directory [Desktop Entry] Name=CustomFolder Comment=CustomFolder applications Icon=custom-icon Type=Directory

ClamAV Desktop Popup notification from on-access-scanner

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

ClamAV Desktop Popup notification from on-access-scanner You can set up a visual confirmation with option to delete an infected file doing the following: 1. create a new script: sudo gedit /opt/clamdazer 2. copy and paste to /opt/clamdazer: #!/bin/sh #Clamdazer script by Gabor Igloi (2005) GPL v=`tail -n 1 /var/log/clamav/clamav.log` v=${v#*: } v=${v%:*} f=${v##*/} zenity --title ClamDazer --warning --text '"'"$f"$'" CONTAINS A VIRUS!\n[ '"$1"$' ]\nWould you like to delete it?' if [ $…

Clone Linux Drive/System

Anonymous (anonymous@undisclosed.example.com) — 2025-09-03T00:50:35+00:00

Clone Linux Drive/System If a hard-drive is to be cloned to a new drive (for example larger HDD to SSD or replacing system) below are steps that could be useful. Firstly you will need a live USB stick, build this or use an existing stick - this will be used throughout.

Core Dump

Anonymous (anonymous@undisclosed.example.com) — 2025-04-25T10:11:51+00:00

Core Dump To create a core dump of a running/frozen process, use this (example chromium): ps -ax | grep -i chromium | cut -d " " -f 2 | xargs gcore -a The resulting binary files can then be processed: strings x.core | grep -i "something"

CUPS

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

CUPS Print to PDF If you want to print files to pdf format directly, install cups-pdf which installs a new PDF printer. sudo apt-get install cups-pdf By default, printed PDFs are stored in ~/PDF, but this can be configured in /etc/cups/cups-pdf.conf

Change dependencies of deb files

Anonymous (anonymous@undisclosed.example.com) — 2024-12-04T12:54:06+00:00

Change dependencies of deb files change dependencies of a deb package: You can change the dependencies of a deb package like this: Unpack deb: ar x golden-linux.deb (will create i.e. three files: debian-binary control.tar.gz data.tar.gz) Unpack control archive: tar xf control.tar.gx (will create: postinst postrm preinst prerm md5sums control) Fix dependencies in control (use a text editor) Repack control.tar.gz: tar --warning=no-failed-read --ignore-failed-read -cvJf control.tar.xz {po…

DNS server change

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

DNS server change While the default DNS server configuration is in /etc/resolv.conf, systemd and possibly other services may adjust this file. Changes to /etc/resolv.conf work immediately, but may be overwritten after reboot. vi /etc/resolv.conf

Docker

Anonymous (anonymous@undisclosed.example.com) — 2025-09-03T23:12:34+00:00

Docker Main install apt-get -y install curl unzip dialog curl -fSSL get.docker.com | sh Useful alias to exclude container overlays from the df command for use in .bashrc or .profile: alias df='/usr/bin/df -x overlay' Show logs docker logs --follow

Dockerizing python app

Anonymous (anonymous@undisclosed.example.com) — 2025-09-04T15:15:29+00:00

Dockerizing python app Python scripts/apps can be dockerised rather than using a venv and/or installing in the host system. For example, ffpb is a wrapper for ffmpeg to show progress. Using pipx comes with a lot of dependencies, a standalone package is not available, so dockerizing it is the simplest option and bundling it with the latest statically linked ffmpeg binaries.

Exim configuration for outgoing emails

Anonymous (anonymous@undisclosed.example.com) — 2025-04-22T11:41:29+00:00

Exim configuration for outgoing emails apt-get install exim4 Set/adjust mail name as necessary: vi /etc/mailname Set aliases to redirect root mail to other email address: vi /etc/aliases add/amend root: postmaster@example.com apply new aliases file

Extract Metadata

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:33+00:00

Extract Metadata Exiftool - while initially used to extract and manipulate EXIF data of image files - can be used to extract meta data for a large amount of files including MS Office xlsx/docx/etc, Openoffice files, videos, audio files etc. Current list of supported file types:

File Changes

Anonymous (anonymous@undisclosed.example.com) — 2024-12-30T03:27:59+00:00

File Changes Watch for changes in files: sudo apt-get install inotify-tools inotifywait -e modify,create,delete,move -r -m /path/to/watch To do something with the result, the following could be used inotifywait -e modify,create,delete,move -r -m | while read line; do something_with $line; done

find examples

Anonymous (anonymous@undisclosed.example.com) — 2025-05-19T11:15:59+00:00

find examples General note to -exec {} + vs -exec {} \;: The following executes program and sends a space separated list of quoted filenames to it. Program may be called multiple times if the amount of arguments exceeds ARG_MAX. find . -exec program {} +

Firefox decrypt passwords

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Firefox decrypt passwords This python script extracts the passwords stored in Firefox's password manager. #!/usr/bin/env python3 # -*- coding: utf-8 -*- # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; …

Correct file extensions

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Correct file extensions Fix file extension based on mimetype: mimetype -M --output-format 'mv "%f" "%f%m"' * | sed 's/jpeg"$/jpg"/;s#\.[^./"]*/$[^./]*"$$#\.\1#e'

Get external IP

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Get external IP curl ifconfig.me dig +short myip.opendns.com @resolver1.opendns.com curl -s http://checkip.dyndns.org/ | grep -o "[[:digit:].]\+" curl -s http://checkip.dyndns.org | sed 's/[a-zA-Z<>/ :]//g' curl curlmyip.net

Gluetun Docker Stack

Anonymous (anonymous@undisclosed.example.com) — 2025-08-27T11:28:22+00:00

Gluetun Docker Stack Gluetun is a docker image for several VPN providers. It can be used to route specific other docker services through the configured VPN while the main system remains unaffected. The following is a docker compose file using gluetun as VPN and http proxy and several additional services with auto heal capability to restart the services if they stop responding.

Linux Graphics info

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Linux Graphics info Older Linux distros used to come with the “Intel” Xserver driver. This driver is known as xserver-xorg-video-intel in the Ubuntu repo. This driver works with the i915 kernel module to enable the X server, which previously handled all of the video output as well as user input in Linux. It’s still in use on many, probably most, Linux desktops now (mine included), but it’s showing its age, and the goal is for it to be replaced by Wayland, the next generation graphics subsyst…

Silent Grub

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Silent Grub vi /etc/default/grub GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=0 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash vga=current loglevel=0 rd.systemd.show_status=false rd.udev.log_priority=3 vt.global_cursor_default=0" #/sys/class/drm/card0-DP-1/edid #GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=DP-1:1920x1080@60D drm_kms_helper.edid_firmware=DP-1:edid/edid.bin" GRUB_CMDLINE_LINUX="q…

Hardware Info

Anonymous (anonymous@undisclosed.example.com) — 2025-05-06T11:46:32+00:00

Hardware Info Connected Monitors sudo apt-get install read-edid ls /sys/class/drm/*/edid | xargs -i{} sh -c "echo {}; parse-edid < {}" PC Model / Manufacturer / BIOS sudo cat /sys/devices/virtual/dmi/id/{sys_vendor,product_{family,version,name},bios_version}

Mass ID3 edit

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Mass ID3 edit sudo apt-get install id3v2 bash script for search & replace in title tag: ## Iterate over all file/dir names ending in mp3 for file in /path/to/dir/with/mp3/files/*mp3; do ## read the title and save in the variable $title title=$(id3v2 -l "$file" | grep -oP '^(Title\s*|TIT2\s*.*\)):\K(.*?)(?=Artist:)'); ## check if this title matches ytversion if [[ "$title" =~ "ytversion" ]]; then ## If it does, replace ytversion with mqversion and ## save i…

Increase swap file size

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Increase swap file size Check existing swap file: sudo swapon -s Example setting/resetting swapfile to 6GB. Note that while multiple swap files can exist, when hibernating to disk only one swap file is being used. sudo swapoff /swapfile sudo dd if=/dev/zero of=/swapfile count=1k bs=6M sudo mkswap /swapfile sudo chown root:root /swapfile sudo chmod 600 /swapfile sudo swapon /swapfile

iptables systemd persistent

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

iptables systemd persistent

Disable ipv6 support

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Disable ipv6 support Apache By default, Apache will listen on all IPs, both IPv6 and IPv4. This is controlled by the Listen directive: Listen 80 To turn off IPv6 in Apache, just change the Listen directive in /etc/apache2/ports.conf to Listen 0.0.0.0:80

Less syntax highlighting

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Less syntax highlighting Add the following to ~/.bashrc then reload config or reopen terminal. ### Terminal Syntax Highlighting # Setup: "apt-get install highlight" # Pipe Highlight to less (remove --line-numbers option for better copy&pasting) export LESSOPEN="| $(which highlight) %s --out-format xterm256 --line-numbers --quiet --force --style freya" export LESS=" -R" # remove -N and --line-numbers for better copy&pasting. other options can be defined like this: alias less='less -m -N -g -…

Letsencrypt

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Letsencrypt Debian 9 apt update apt install certbot Generate Strong Dh (Diffie-Hellman) Group openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048 Obtaining a Let’s Encrypt SSL certificate Webroot way mkdir -p /var/lib/letsencrypt/.well-known chgrp www-data /var/lib/letsencrypt chmod g+s /var/lib/letsencrypt

ISO date in ls -l

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

ISO date in ls -l By default, the ls command shows a short and inconsistent date/time column. No year is being displayed if the file is less than a year old. To change this behaviour and always display the full iso date and time, edit ~/.bashrc and adjust or add the ls alias line like so:

LUKS boot repair

Anonymous (anonymous@undisclosed.example.com) — 2024-10-21T20:20:54+00:00

LUKS boot repair Guides: * * * cryptsetup luksOpen /dev/sdb3 home_sdb3 vgchange -ay lvscan mkdir /media/linux mount /dev/ubuntu-vg/root /media/linux/ mount -o bind /proc /media/linux…

Mass renaming in bash

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Mass renaming in bash Add prefix to filename: rename 's/^/MyPrefix_/' * Remove part of filename: rename 's/SEARCH/REPLACE/' * Add suffix to filename: rename 's/$/_MySuffix/' * Rename extension: rename 's/\.pdf$/.doc/' * Swapping parts of filename:

Mint 20 to 20.1/20.2/20.3 upgrade

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Mint 20 to 20.1/20.2/20.3 upgrade Manual upgrade 20.0 Ulyana to 20.1 Ulyssa sudo apt update sudo apt upgrade sudo apt dist-upgrade sudo apt autoremove sudo sed -i 's/ulyana/ulyssa/g' /etc/apt/sources.list.d/official-package-repositories.list sudo apt update sudo apt upgrade sudo apt dist-upgrade sudo apt autoremove sudo /usr/share/ubuntu-system-adjustments/systemd/adjust-grub-title sudo /usr/lib/linuxmint/mintsystem/mint-adjust.py #update version number in grub menu sudo update-grub #us…

Mint 20.3 to 21/21.1/21.2/21.3 upgrade

Anonymous (anonymous@undisclosed.example.com) — 2024-01-19T14:37:56+00:00

Mint 20.3 to 21/21.1/21.2/21.3 upgrade Mint 20.3 to 21.0 upgrade sudo sed -i 's/una/vanessa/' /etc/apt/sources.list sudo sed -i 's/una/vanessa/' /etc/apt/sources.list.d/official-package-repositories.list sudo sed -i 's/focal/jammy/' /etc/apt/sources.list.d/official-package-repositories.list sudo apt update sudo apt upgrade sudo dpkg -i --force-overwrite /var/cache/apt/archives/casper_1.470_amd64.deb sudo apt upgrade sudo apt-get dist-upgrade sudo apt autoremove sudo apt-get install perl su…

Mint cleanup

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Mint cleanup #unless required, remove java sudo apt purge openjdk-11-jre openjdk-11-jre-headless java-common #languages sudo apt purge orca wfrench wbrazilian wspanish wportuguese witalian wswiss \ fonts-smc fonts-thai-tlwg \ hunspell-en-au hunspell-en-ca hunspell-en-za hunspell-es hunspell-fr* hunspell-it \ hunspell-pt* hunspell-ru hyphen-fr hyphen-it hyphen-ru \ mythes-fr mythes-it mythes-pt-pt mythes-ru #others sudo apt purge timeshift wimtools modemmanager nvidia-prime-applet…

Mint OEM install

Anonymous (anonymous@undisclosed.example.com) — 2025-07-02T10:41:29+00:00

Mint OEM install Choosing OEM install in the boot manager sets up the base system, additional software/drivers can be installed and when ready, a link to “Prepare for shipping to end user” is on the desktop. This will reboot the system and on next boot, the system will ask for user details for regular use.

Mint Tips

Anonymous (anonymous@undisclosed.example.com) — 2024-03-31T16:46:51+00:00

Mint Tips Change/configure 'start menu' icon right-click icon -> configure -> use custom icon LightDM Login Screen Multi-Monitor Rotation Install arandr sudo apt-get install arandr Start it and save the screen state as a file. Add the command in that file to /etc/lightdm/lightdm.conf.d/70-linuxmint.conf i.e.

Mint 19.2/19.3 to 20

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Mint 19.2/19.3 to 20 Mint to 19.2 update Upgrade applets, desklets, themes, etc Update Update Manager, restart update manager apply all updates select mint upgrade from edit menu apt install p7zip-full apt-get remove xul-ext-lightning xscreensaver hack no longer supported on cinnamon:

Mint 21.3 to 22 upgrade

Anonymous (anonymous@undisclosed.example.com) — 2024-09-27T09:57:43+00:00

Mint 21.3 to 22 upgrade Mint 21.3 to 22.0 upgrade Can be done via GUI update manager. Prep: * remove libreoffice prior to upgrade Config changes required after upgrade: * reinstall libreoffice * install mysql-workbench from mysql.com directly as not available in ubuntu repo yet

Editable Mintstick

Anonymous (anonymous@undisclosed.example.com) — 2024-12-27T23:36:43+00:00

Editable Mintstick Following are instructions to partition, format and prepare a USB stick to be able to boot and contain adjustments like additional drivers/packages or configuration files. Partition USB Device Gparted GUI method: gparted * delete partitions

Mint update on wakeup

Anonymous (anonymous@undisclosed.example.com) — 2023-12-11T16:53:04+00:00

Mint update on wakeup v2 is available here: Prerequisites: sudo apt-get install at libnotify-bin #!/bin/bash ARGS=$1; SCRIPTDIR=${0%/*}; SCRIPTNAME=${0##*/}; SCRIPTNAME=${SCRIPTNAME#*_} ################################################################################ # # mintupdate-on-wakeup by tux@enkidu.eu # # (based on unattended-upgrades-alternative 1.1 by tux@enkidu.eu) # # 28.12.2018: v1.0 - initial release (Mint 18 only) # 30.04.2…

Mono

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Mono sudo apt install gnupg ca-certificates sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF echo "deb [arch=amd64] https://download.mono-project.com/repo/ubuntu stable-focal main" | sudo tee /etc/apt/sources.list.d/mono-official-stable.list sudo apt update sudo apt install mono-devel

Mullvad VPN

Anonymous (anonymous@undisclosed.example.com) — 2025-10-27T14:44:53+00:00

Mullvad VPN Mullvad is a commercial wireguard/openvpn VPN service. Servers Client installation # Download the Mullvad signing key sudo curl -fsSLo /usr/share/keyrings/mullvad-keyring.asc https://repository.mullvad.net/deb/mullvad-keyring.asc # Add the Mullvad repository server to apt echo "deb [signed-by=/usr/share/keyrings/mullvad-keyring.asc arch=$( dpkg --print-architecture )] https://repository.mullvad.net/d…

MySQL Workbench

Anonymous (anonymous@undisclosed.example.com) — 2025-10-27T14:40:51+00:00

MySQL Workbench Add official repository echo "deb http://repo.mysql.com/apt/ubuntu/ focal mysql-tools" | sudo tee /etc/apt/sources.list.d/mysql.list Note the key error: sudo apt update Insert key in this command: sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys

nmap

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

nmap Local network scan sudo nmap -n -sP 192.168.1.0/24 results in: Nmap scan report for 192.168.1.1 Host is up (0.00032s latency). MAC Address: 00:1D:AA:B1:DB:18 (DrayTek) Local scan with MAC addresses sudo nmap -sP 172.31.201.0/24 | awk '/Nmap scan report for/{printf $5;}/MAC Address:/{print " => "$3;}' | sort -V

Notepadqq

Anonymous (anonymous@undisclosed.example.com) — 2024-12-24T22:15:55+00:00

Notepadqq Notepadqq is a notepad++ alternative/port for Linux. It can be installed using: apt-get install notepadqq Mint 22 / Ubuntu 24.04: sudo apt-get install qtbase5-dev qtchooser qt5-qmake qttools5-dev-tools qtwebengine5-dev libqt5websockets5-dev libqt5svg5 libqt5svg5-dev libuchardet-dev pkg-config git git clone --recursive https://github.com/notepadqq/notepadqq.git cd notepadqq ./configure --prefix /usr make sudo make install sudo apt-get purge qtbase5-dev qtchooser qt5-qmake qtto…

VNC Notifications

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

VNC Notifications VNC notifications example: #!/bin/bash alertme() { zenity --notify "Big brother watching" } while : do netstat -a | grep vnc | grep ESTABLISHED && alertme sleep 60 #wait 60 seconds done Notify-Send script with more options than zenity:

Notify

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Notify To display notifications from scripts running as root for the currently logged in user, use this: notify-send.sh #!/bin/bash username= if [ "$(id -u)" != "1000" ] ; then sudo -u $username DISPLAY=:0 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus notify-send "$@" else notify-send "$@" fi

OneDrive on Mint 22

Anonymous (anonymous@undisclosed.example.com) — 2025-09-02T16:49:18+00:00

OneDrive on Mint 22 Source: The OneDrive version in the Ubuntu universe repository is version 2.4.25 - do not use, it does not work on Mint 22! Use the repo instead (current version 2.5.6). wget -qO - https://download.opensuse.org/repositories/home:/npreining:/debian-ubuntu-onedrive/xUbuntu_24.04/Release.key | gpg --dearm…

ping

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

ping Normal ping operation is continuous. ping 8.8.8.8 To get intermittent statistics, the SIGQUIT signal can be sent to the ping command. Example output: 64 bytes from 8.8.8.8: icmp_seq=185 ttl=116 time=20.8 ms 64 bytes from 8.8.8.8: icmp_seq=186 ttl=116 time=22.1 ms 186/186 packets, 0% loss, min/avg/ewma/max = 20.775/24.063/23.094/37.955 ms 64 bytes from 8.8.8.8: icmp_seq=187 ttl=116 time=21.3 ms 64 bytes from 8.8.8.8: icmp_seq=188 ttl=116 time=22.7 ms 64 bytes from 8.8.8.8: icmp_seq=1…

Preseed Linux USB Create

Anonymous (anonymous@undisclosed.example.com) — 2025-04-03T14:05:48+00:00

Preseed Linux USB Create To create an Auto-Install USB Stock with Mint 21.2 or later, use the following steps. * Download latest Linux Mint iso file * Insert USB stick, check with dmesg | tail to identify the usb device * Delete/Create FAT32 partition

Boot previous kernel (Mint)

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Boot previous kernel (Mint) grep "menuentry " /boot/grub/grub.cfg count the entries with tab in front, start at 0 sudo vi /etc/default/grub change GRUB_DEFAULT=0 #boots the latest kernel to the desired kernel name Increase timeout to 2 seconds to display boot menu if necessary:

Remmina

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Remmina sudo apt-add-repository ppa:remmina-ppa-team/remmina-next sudo apt update sudo apt install remmina remmina-plugin-rdp remmina-plugin-secret Enable scaled mode for any new connection: vi ~/.remmina/remmina.pref add to the section [remmina]:

Rip Audio CDs to MP3s

Anonymous (anonymous@undisclosed.example.com) — 2026-02-01T13:14:16+00:00

Rip Audio CDs to MP3s Converting audio CDs to MP3 consists of two steps: * rip the audio tracks from the cd and save them as wave file * convert the wave files to mp3 files The tools required for these two steps are cdparanoia and lame. The graphical front-end ripperx can be used which also provides the option to add artist and title details and write mp3 tags.

rtkit logging

Anonymous (anonymous@undisclosed.example.com) — 2025-09-25T16:02:24+00:00

rtkit logging rtkit is very spammy and floods syslog with messages. To disable this: sudo mkdir /etc/systemd/system/rtkit-daemon.service.d sudo vi /etc/systemd/system/rtkit-daemon.service.d/log.conf [Service] LogLevelMax=notice sudo systemctl daemon-reload sudo systemctl restart rtkit-daemon.service

Screenshot

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Screenshot gnome-screenshot, built in, can be started using menu. Global keyboard shortcuts: Prt Scrn to take a screenshot of the desktop. Alt+Prt Scrn to take a screenshot of a window. Shift+Prt Scrn to take a screenshot of an area you select.

Script

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Script Script records console output for future reference. To start recording use this: script -t 2>~/recording_name.time -a ~/recording_name.script To replay it later, use this: scriptreplay ~/recording_name.time ~/recording_name.script

Mount Sharepoint

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Mount Sharepoint Set up an MS App password for rclone on sudo apt-get install rclone mkdir -p ~/.config/rclone/ vi ~/.config/rclone/rclone.conf [whatevername] type = webdav url = https://domainname.sharepoint.com/sites/sitename vendor = sharepoint user = firstname.lastname@example.com pass = xxxx

Sound Switcher Indicator

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Sound Switcher Indicator Sound input/output selector indicator for Linux. This app shows an icon in the indicator area or the system tray (whatever is available in your desktop environment). Icon’s menu allows you to switch the current sound input and output (i.e. source and sink in PulseAudio’s terms, respectively) ports with just two clicks.

SQLite Browser

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

SQLite Browser GUI to work with sqlite, sqlite2.x and sqlite3.x databases. Mint/Ubuntu: sudo add-apt-repository -y ppa:linuxgndu/sqlitebrowser sudo apt-get update sudo apt-get install sqlitebrowser

SSH Auto Login

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

SSH Auto Login Prerequisites on the target server: vi /etc/ssh/sshd_config PermitRootLogin yes RSAAuthentication yes PubkeyAuthentication yes Then restart sshd service ensure both the home directory and the .ssh directory on the server have the correct permissions. On Synology, the home directory has 777 permissions and needs to be changed to:

SSH Tunnel VNC/Remmina

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

SSH Tunnel VNC/Remmina This script establishes an SSH tunnel, starts x11vnc on the remote host, sets up port forwarding to an available local port and then starts remmina or the default vnc viewer to connect to the remote vnc server. Set port, user and hostname in the shell script.

SSH Tunnel

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

SSH Tunnel Forwarding In this example, the remote port 3306 on the remote server will be forwarded to local port 3307 using login@remoteserver for ssh credentials. The connection is pushed in the background and the port will remain forwarded as long as this ssh connection remains active.

sshfs auto reconnect

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

sshfs auto reconnect Scenario: using SSHFS mounts from laptop to a central server, the SSHFS mount is broken after a longer disconnect (e.g. during suspend), causing the underlying SSH connection to time out. Use -o reconnect,ServerAliveInterval=15,ServerAliveCountMax=3

Linux

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Linux

Suspend to disk and reboot

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Suspend to disk and reboot In order to easier switch between different operating systems on a pc, one can suspend to disk and configure grub to automatically reboot after suspending. The command s2disk has options to easily trigger a reboot after suspending. This command is part of the

Suspend

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Suspend Wake up from suspend with wireless usb keyboard/mouse Automatically Suspend and Wake a Linux Machine

Useful SystemD commands

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Useful SystemD commands (hints for systemctl or systemctl vs chkconfig and service) List all running services # systemctl Start/stop or enable/disable services Activates a service immediately: # systemctl start foo.service Deactivates a service immediately:

Tar/gzip examples

Anonymous (anonymous@undisclosed.example.com) — 2024-10-22T11:49:26+00:00

Tar/gzip examples Add multiple specific files into a single compressed tarball: tar czf archive.tar.gz /tmp/something_*.txt /tmp/other.log Backup of directory on remote server to local server via ssh ssh root@server "(cd /directory/; tar cvzf - *)" > ./localbackup.tar.gz

Wrong time

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Wrong time Linux systems usually synchronise the time with ntp (network time protocol) servers. If the time is not correct, that means either the synchronisation process is not running or is misconfigured. Linux mint/debian does not use the default ntp deamon, but instead uses ntpdate-debian to update the time. This uses configuration in /etc/default/ntpdate. However, when the full ntp package is installed, this uses the server list of the main configuration in /etc/ntp.conf

Top via ps

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Top via ps The following command will show the list of top processes ordered by RAM and CPU use in descendant form (remove the pipeline and head if you want to see the full list): ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head or sort by cpu:

TortoiseHg

Anonymous (anonymous@undisclosed.example.com) — 2025-09-30T21:28:11+00:00

TortoiseHg Manual tortoisehg installation (if required): mkdir ~/temp 2>/dev/null cd ~/temp sudo apt install python-is-python3 python --version sudo apt install -y python3-pip build-essential sudo apt install -y mercurial hg clone https://bitbucket.org/tortoisehg/thg/ -r stable hg clone https://foss.heptapod.net/mercurial/to…

Unattended Updates

Anonymous (anonymous@undisclosed.example.com) — 2023-06-05T13:05:51+00:00

Unattended Updates In order to install updates automatically, the unattended-upgrades package needs to be installed and configured. It can install only security updates or updates from any branch or repository that's desired. It can reboot automatically or not at all and it can exclude specific packages.

Unlock by wifi SSID

Anonymous (anonymous@undisclosed.example.com) — 2025-03-31T16:27:20+00:00

Unlock by wifi SSID To disable the screen lock when connected to a specific wifi ssid (e.g. at home), the following script can be used for Gnome and Cinnamon systems. sudo vi /etc/NetworkManager/dispatcher.d/99-disable-screen-lock Replace SSID and USERNAME with the relevant entries. Uncomment the three lines and connect/disconnect to log the exact SSID name in a test file if necessary. On Linux Mint 22, the SSID in the CONNECTION_ID variable appears to be prefixed with

Auto-mount ext USB drive when plugged in

Anonymous (anonymous@undisclosed.example.com) — 2025-08-06T14:27:38+00:00

Auto-mount ext USB drive when plugged in Generic description: Finally found a solution on how to make my Linux (Debian): A) Remember the unique USB drive(in my case a Western Digital Mirror Edition), and where to mount it B) Automatically mount it when connected

VI tips

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

VI tips Quick save Press SHIFT + ZZ which is equivalent to :x which is equivalent to :wq, except that it only saves if the file has been changed. Set tab size and convert tabs to spaces :set tabstop=4 :retab Turn off autoindent when you paste code

VIM configuration

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

VIM configuration Make VI default editor In order to make vi the standard global default editor to edit crontab for example use this command for debian: update-alternatives --config editor and select vim.basic follow it by select-editor or

VirtualBox KVM

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

VirtualBox KVM Converting VirtualBox VM (VDI format) to KVM (qcow2 format): #list available VirtualBox HDDs and note Capacity and Location VBoxManage list hdds #Convert VDI to RAW image VBoxManage clonehd --format RAW /home/wuff/VirtualBoxVMs/Win10/Win10.vdi win10.img #Convert RAW image to qcow2 image qemu-img convert -f raw win10.img -O qcow2 win10.qcow2

WiFi AP fallback

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

WiFi AP fallback

Create custom Win USB install

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Create custom Win USB install sudo add-apt-repository ppa:nilarimogard/webupd8 sudo apt update sudo apt install woeusb sudo add-apt-repository --remove ppa:nilarimogard/webupd8 sudo apt update or build manually from git: git clone https://github.com/slacka/WoeUSB.git cd WoeUSB/ ./setup-development-environment.bash sudo apt-get install devscripts equivs gdebi-core mk-build-deps sudo gdebi woeusb-build-deps_*.deb dpkg-buildpackage -uc -b sudo gdebi ../woeusb*.deb

Windows To Go from Linux

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Windows To Go from Linux This is for having a Windows Installation on a USB that you can plug into any computer. sudo apt-get install virtualbox virtualbox-qt Download virtualbox extension pack from oracle website for the respective virtualbox version:

Winapps

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Winapps Running Windows apps on linux via Windows in VM with RDP

Logitech H820e Headset

Anonymous (anonymous@undisclosed.example.com) — 2023-05-29T10:55:34+00:00

Logitech H820e Headset Linux button config The following disables the Logitech Headset buttons as input device (to avoid messing up mouse input). The mute button still works, but volume control is disabled as well. lsusb #identify the ID of logitech headset i.e. #Bus 001 Device 007: ID 046d:0a49 Logitech, Inc. sudo tee /usr/share/X11/xorg.conf.d/50-LogitechInc.conf << EOF Section "InputClass" Identifier "Logitech, Inc." MatchUSBID "046d:…