But as bash is a shell, where the main goal is to run other unix commands and react on result code and/or output ( commands are often piped filter, etc... ), storing command output in …

Jan 6, 2010 · 1458 I have a whole bunch of tests on variables in a bash (3.00) shell script where if the variable is not set, then it assigns a default, e.g.: if [ -z "${VARIABLE}" ]; then …

Mar 5, 2017 · Set a local and environment variable using Bash on Linux Check for a local or environment variables for a variable called LOL in Bash: $ set | grep LOL $ $ env | grep LOL $ …

In a given shell, normally I'd set a variable or variables and then run a command. Recently I learned about the concept of prepending a variable definition to a command: FOO=bar …

I would like to store a command to use at a later time in a variable (not the output of the command, but the command itself). I have a simple script as follows: command="ls"; echo "C...

237 This question already has answers here: How do I set a variable to the output of a command in Bash? (16 answers)

Jun 21, 2020 · This is generally the best way to have a "script" set variables in an existing shell. Note that the "standard" command to do this is . (yes, a period is a valid command), but some …

Dec 9, 2015 · 68 If you want to set environment variables permanently in Git-Bash, you have two options: Set a regular Windows environment variable. Git-bash gets all existing Windows …

Aug 20, 2011 · On Linux (Ubuntu 11.04 (Natty Narwhal)) in Bash, is it possible to temporarily set an environment variable that will only be different from the normal variable for the duration of …

Oct 4, 2014 · I am supposed to set the EC2_HOME and JAVA_HOME variables before running a command (ec2-describe-regions) How do I do that in one go?