How do you return to a sourced bash script?

Question

I use "source" inside a bash script, as follows:

#!/bin/bash
source someneatscriptthatendsprematurely.sh

I would like to exit from

Answer 1

I had the same problem just now

I realized that adding a checker function and returning that will not also return the function on its caller for example.

On bash_functions

function install_packer_linux() {
  check_wget && check_unzip
  wget https://releases.hashicorp.com/packer/1.1.2/packer_1.1.2_linux_amd64.zip
  unzip packer_1.1.2_linux_amd64.zip
  mv packer ~/.local/bin
  rm -f packer_1.1.2_linux_amd64.zip
}


function check_unzip() {
  if ! [ -x "$(command -v unzip)" ]; then
    echo "Error: unzip is not installed"
    return 1
  else
    return 0
  fi
}

function check_wget() {
  if ! [ -x "$(command -v wget)" ]; then
    echo "Error!: wget is not installed"
    return 1
  else
    return 0
  fi
}


$ source ~/.bash_functions

What happens here is since the checkers is the only place its returned so install_packer_linux will still continue

So you can do two things here. Either keep the current format (function calling another function) as is and evaluate using truthy value then return if the values are not truthy or rewrite the checker on the main installer_packer_linux function

Truthy:

function install_packer_linux() {
  check_wget && check_unzip || return
  wget https://releases.hashicorp.com/packer/1.1.2/packer_1.1.2_linux_amd64.zip
  unzip packer_1.1.2_linux_amd64.zip
  mv packer ~/.local/bin
  rm -f packer_1.1.2_linux_amd64.zip
}

Notice we added || return after the checks and concatenated the checks using && so if not both checks are truthy we return the function