Draft: bash script template

Basic (unfinished) skeleton of bash script for general purpose

scripts/bash-template.sh

@@ -0,0 +1,111 @@
+#!/usr/bin/env bash
+
+# https://betterdev.blog/minimal-safe-bash-script-template/
+# https://medium.com/better-programming/my-minimal-safe-bash-script-template-300759114040
+
+set -E -o errexit -o nounset -o pipefail
+trap cleanup SIGINT SIGTERM ERR EXIT
+
+readonly SCRIPT_NAME=$(basename "${BASH_SOURCE[0]}")
+readonly SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)
+
+function usage() {
+    cat <<EOT
+Usage: ${script_name} [-h | --help] [-a <ARG>] [--abc <ARG>] [-f | --flag]
+DESCRIPTION
+    Your description here.
+OPTIONS:
+-h, --help
+        Print this help and exit.
+-f, --flag
+        Description for flag option.
+-a
+        Description for the -a option.
+--abc
+        Description for the --abc option.
+EOT
+}
+
+function cleanup() {
+  trap - SIGINT SIGTERM ERR EXIT
+  # script cleanup here
+}
+
+function msg() {
+  echo >&2 -e "${1-}"
+}
+
+function die() {
+  local -r msg="$1"
+  local -r code="${2:-90}"
+  echo "${msg}" >&2
+  exit "${code}"
+}
+
+function parse_params() {
+    local -r args=("${@}")
+
+    while true; do    
+    
+    case "$1" in
+    --abc)
+            abc_option_flag=1
+            shift
+            readonly abc_arg="$1"
+            shift
+            ;;
+
+    -a)
+            a_option_flag=1
+            shift
+            readonly a_arg="$1"
+            shift
+            ;;
+
+    --help|-h)
+            usage
+            exit 0
+            shift
+            ;;
+    
+    --flag|-f)
+            flag_option_flag=1
+            shift
+            ;;
+    
+    --)
+            shift
+            break
+            ;;
+    
+    *)
+            break
+            ;;
+    esac
+    done
+}
+
+# MAIN
+
+a_option_flag=0
+abc_option_flag=0
+flag_option_flag=0
+
+
+parse_params "$@"
+
+if ((flag_option_flag)); then
+    echo "flag option set"
+fi
+
+if ((abc_option_flag)); then            # Check if the flag options are set or ON:
+    # Logic for when --abc is set.
+    # "${abc_arg}" should also be set.
+    echo "Using --abc option -> arg: [${abc_arg}]"
+fi
+
+if ((a_option_flag)); then
+    # Logic for when -a is set.
+    # "${a_arg}" should also be set.
+    echo "Using -a option -> arg: [${a_arg}]"
+fi