Initial commit

template.sh

@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+
+# ERR Trap Inheritance by shell functions, command substitutions, and subshells.
+set -E
+
+# Exit on Error Causes the script to immediately exit if any command returns a non-zero exit status unless that command is followed by || to explicitly handle the error.
+set -e 
+
+# Treats the use of undefined variables as an error, causing the script to exit.
+set -u
+
+# Ensures that a pipeline (a series of commands connected by |) fails if any command within it fails, rather than only failing if the last command fails.
+set -o pipefail
+
+# Cleaup script.
+trap cleanup SIGINT SIGTERM ERR EXIT
+
+# Get the script location and cd to it.
+script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)
+
+# Usage error message.
+usage() {
+  cat <<EOF 
+Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]
+
+Script description here.
+
+Available options:
+
+-h, --help      Print this help and exit
+-v, --verbose   Print script debug info
+EOF
+  exit
+}
+
+# Cleaup up script iplementation. 
+cleanup() {
+  trap - SIGINT SIGTERM ERR EXIT
+  # script cleanup here
+}
+
+# Color setup implementation. 
+setup_colors() {
+  if [[ -t 2 ]] && [[ -z "${NO_COLOR-}" ]] && [[ "${TERM-}" != "dumb" ]]; then
+    NOFORMAT='\033[0m' RED='\033[0;31m' GREEN='\033[0;32m' ORANGE='\033[0;33m' BLUE='\033[0;34m' PURPLE='\033[0;35m' CYAN='\033[0;36m' YELLOW='\033[1;33m'
+  else
+    NOFORMAT='' RED='' GREEN='' ORANGE='' BLUE='' PURPLE='' CYAN='' YELLOW=''
+  fi
+}
+
+# Message helper function implementation.
+msg() {
+  echo >&2 -e "${1-}"
+}
+
+# Script exit implementation.
+die() {
+  local msg=$1
+  local code=${2-1} # default exit status 1
+  msg "\033[0;31m$msg\033[0m"
+  exit "$code"
+}
+
+# Parameter parsing implementation.
+parse_params() {
+
+  while :; do
+    case "${1-}" in
+    -h | --help) usage ;;
+    -v | --verbose) set -x ;;
+    --no-color) NO_COLOR=1 ;;
+    -?*) die "Unknown option: $1" ;;
+    *) break ;;
+    esac
+    shift
+  done
+
+  args=("$@")
+
+
+  return 0
+}
+# ----- Script Start -----
+# Parse parameters and setup colors for script.
+parse_params "$@"
+setup_colors
+
+# Script logic example here.
+msg "${GREEN}Read parameters:${NOFORMAT}"
+
+exit 0