shellcheck.yml

name: Shellcheck

on: [push, pull_request, workflow_dispatch]

jobs:
  shellcheck:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repo
        uses: actions/checkout@v2

      - name: Downloading shellcheck
        shell: bash
        run: |
          tar_file='sh_ch.tar.xz'
          wget -O ./"$tar_file" https://github.com/koalaman/shellcheck/releases/download/stable/shellcheck-stable.linux.x86_64.tar.xz
          tar -xf ./"$tar_file"
          rm ./"$tar_file"

      - name: Checking scripts
        shell: bash
        run: |
          readarray -t text_files < <(find -mindepth 1 -maxdepth 1 -type f ! -iname 'README.md' ! -iname 'thumbnail.jpg' ! -iname 'commands' | sort)  ## commands exceptionally added
          readarray -t bashes     < <(printf '%s\n' "${text_files[@]}" | \grep -Ev '(\.py)$' | sort)

          for b in "${bashes[@]}"; {
            ./shellcheck-stable/shellcheck --severity=error --color=always "$b"
            # syntax: shellcheck -e SC1091 -e SC2154 -e SC2162 -e SC2015 --color=always
            #         shellcheck --severity=error --color=always
            # SC1091 --> (info): Not following: *** was not specified as input (see shellcheck -x).
            # SC2154 --> warning: *** is referenced but not assigned
            # SC2162 --> note: read without -r will mangle backslashes.
            # SC2015 --> (info): Note that A && B || C is not if-then-else. C may run when A is true.
            # SC2034 --> warning: mem_free appears unused. Verify use (or export if used externally).
            # SC2124 --> warning: Assigning an array to a string! Assign as array, or use * instead of @ to concatenate.
          }