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alias with an argument

In bash, you want to write an alias that receives an argument.

Well, you can’t do that in bash. But there is a workaround: call a bash function, and the function can treat the argument.

Let’s see a concrete example. While working with Python virtual environments, I wanted to be able to activate a virtual env. easily with the command “workon <DIR>“, where “workon” would be an alias and “<DIR>” is the name of a directory. (Detailed post is here.)

Add the following lines to your ~/.bashrc:

if [[ -z "$1" ]]
    echo "Usage: workon <venv>"
    . $1/bin/activate
alias workon=func_workon
Categories: bash, python Tags: ,
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