Linux Tips

Run Programs for X Server

sudo apt-get install xvfb
sudo Xvfb :10 -ac
export DISPLAY=:10

# Create new session
tmux new -s [session-name]
# List session
tmux ls
# Attach session
tmux attach-session -t [session-number/session-name]

apk add busybox-extras

sudo apt install procps

export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8
export LANGUAGE=en_US.UTF-8

Enable auto time synchronization with host

vboxmanage setextradata [vbox] "VBoxInternal/Devices/VMMDev/0/Config/GetHostTimeDisabled" "1"

Command	Description
`alias`	List all aliases
`take`	Create a new directory and change to it, will create intermediate directories as required
`exec zsh`	Apply changes made to `.zshrc`

Run this:

pkexec visudo

#!/bin/bash

set -eou pipefail

pipefail — If set, the return value of a pipeline is the value of the last (rightmost) command to exit with a non-zero status, or zero if all commands in the pipeline exit successfully.
-e — Exit immediately if a pipeline, which may consist of a single simple command, a list, or a compound command returns a non-zero status.
-u — Treat unset variables and parameters other than the special parameters ‘@’ or ‘*’ as an error when performing parameter expansion. An error message will be written to the standard error, and a non-interactive shell will exit.
-o [option-name] — Set the option corresponding to option-name.

See details in the docs — The Set Builtin .