Full rewrite

.github/workflows/bash_unit.yml

@@ -0,0 +1,33 @@
+name: bash_unit CI
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  ubuntu:
+    runs-on: ubuntu-latest
+    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: install Ubuntu dependencies with sudo apt install -y
+      run: sudo apt install -y gawk
+
+    - name: Unit testing with bash_unit
+      run: ./run_tests.sh
+
+  macos:
+    runs-on: macos-latest
+    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]') && contains(toJSON(github.event.commits.*.message), '[macos]')"
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: install MacOS dependencies with brew install
+      run: brew install gawk
+
+    - name: Unit testing with bash_unit
+      run: ./run_tests.sh

.github/workflows/shellcheck.yml

@@ -0,0 +1,17 @@
+name: Shellcheck CI
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  shellcheck:
+    runs-on: ubuntu-latest
+    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Check for code quality errors
+      run: ./run_linter.sh