Dateien des bash Tutorioals auf raspithek.de
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#!/bin/bash
# Universelle Parameterparser-Funktion
parse_args() {
POSITIONAL=()
while [[ $# -gt 0 ]]; do
case "$1" in
-h|--help)
echo "Usage: $0 [options]"
echo "Options:"
echo " -h, --help Show this help message"
echo " -v, --verbose Enable verbose mode"
echo " -f, --file <file> Specify a file"
echo " -n, --number <num> Specify a number (default: 42)"
exit 0
;;
-v|--verbose)
VERBOSE=true
shift
;;
-f|--file)
if [[ -z "$2" || "$2" == -* ]]; then
echo "Error: --file requires a non-empty argument."
exit 1
fi
FILE="$2"
shift 2
;;
-n|--number)
if [[ -z "$2" || "$2" == -* ]]; then
echo "Error: --number requires a non-empty argument."
exit 1
fi
NUMBER="$2"
shift 2
;;
--) # Explicit end of options
shift
break
;;
-*) # Unknown option
echo "Error: Unknown option $1"
exit 1
;;
*) # Positional argument
POSITIONAL+=("$1")
shift
;;
esac
done
set -- "${POSITIONAL[@]}" # Restore positional parameters
# Defaults
VERBOSE="${VERBOSE:-false}"
NUMBER="${NUMBER:-42}"
}
# Aufruf der Funktion mit allen Skriptargumenten
parse_args "$@"
# Beispielnutzung
echo "Verbose mode: $VERBOSE"
echo "File: ${FILE:-<not set>}"
echo "Number: $NUMBER"
echo "Positional arguments: $@"