Sep 27, 2015 · What's the difference between <<, <<< and < < in bash?Here document << is known as here-document structure. You let the program know what will be the ending text, and …

Apr 3, 2015 · I am trying to look for all XML files in a particular directory and all sub-directories (recursively) inside it. ls -R *.xml is only listing files in the current directory. I am quite sure, the …

Nov 27, 2013 · Could someone explain to me the difference between > and >> when using shell commands? Example: ps -aux > log ps -aux >> log It seems the result is the same either way.

Aug 27, 2011 · To set an environment variable once, use the export command in the prompt, not in a shell script: $ export THEVAR=/example The variable will be set for the rest of the shell …

Jun 1, 2018 · 20 #!/usr/bin/env bash while true; do if xprintidle | grep -q 3000; then xdotool mousemove_relative 1 1 fi done Currently I'm able to check if xprintidle is equal to 3000 and …

The next nice thing is tab expansion. If you enter cd ~/Dow Tab (last is pressing Tabulator key), the bash automatically expands it to cd ~/Downloads. As the others said GNU/Linux is case …

Jan 30, 2017 · #!/bin/bash # To focus exclusively on the performance of each type of increment # statement, we should exclude bash performing while loops from the # performance measure.

Sep 6, 2011 · I don't have enough reputation to add a real answer, but when using the shopt -s dotglob && rm /path/to/directory/* solution in bash, (shopt -s dotglob && rm /path/to/directory/*) …

There is a file named RESULTS.txt and I want to open this file in my terminal. (I mean I want to see the file contents be displayed in the terminal and not in some text editor) How do I do that ?

In addition, cd .. can take you back to the working directory's parent directory and then if necessary the command can be repeated until you get to where you want to be. In fact, each …