CLI

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Various bash/zsh/CLI tips.

Commands

Execute any line // echo any line from a textfile.

Source: https://www.reddit.com/r/archlinux/comments/6k7go4/how_could_i_excecute_specific_commands_from_a/

sed -n 1p file.txt | bash

Turn screen off

https://wiki.archlinux.org/index.php/Display_Power_Management_Signaling

i3lock -c 000000 & xset dpms force off

Screen brightness

sudo tee /sys/class/backlight/radeon_bl0/brightness <<< 40 

(out of 255/max_brightness)

Pull multiple files from Android via ADB using wildcards

Annoyingly the output of the adb shell ls command includes line-feed control characters that you can remove using tr -d '\r'.

Examples:

adb shell 'ls sdcard/gps*.trace' | tr -d '\r' | xargs -n1 adb pull
adb shell 'ls /sdcard/*.txt' | tr -d '\r' | sed -e 's/^\///' | xargs -n1 adb pull

Suspend at ...

echo "systemctl suspend" | sudo at now +1 hour

From / other examples at: https://unix.stackexchange.com/questions/120506/how-to-shutdown-linux-at-a-specific-datetime-from-terminal/175601#175601

Backup everything in current directory + mysql database

tar cf backup_09062018.tar.gz .
mysqldump --add-drop-table -u $user -p $pass > backup_09062018.sql


Programs

OpenVPN & writepid

Config line:

writepid /etc/openvpn/mv.pid

though

sudo openvpn --config mullvad_linux.conf --writepid /etc/openvpn/mv.pid

is better. In .i3status,

run_watch VPN {
        pidfile = "/etc/openvpn/mv.pid"
}
order += "run_watch VPN"

Network-manager replacement in Arch

nmtui

Pacman-wrapper for downloading faster

powerpill [1] (seems a bit like axel and apt-fast)

Speedtest

 speedtest-cli

Resources

See also Category:CLI