Why bash alias doesn't work in scripts? [duplicate]

Answer 1

The simplest answer is to fix this issue is to do the 2 important things in your script -or it wont' work, if you just do one thing.

#!/bin/bash -i

# Expand aliases defined in the shell ~/.bashrc
shopt -s expand_aliases

After this, your aliases that you have defined in ~/.bashrc they will be available in your shell script (giga.sh or any.sh) and to any function or child shell within such script.

If you don't do that, you'll get an error:

your_cool_alias: command not found