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@ -1,17 +1,20 @@ |
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#!/bin/bash |
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display_help() { |
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echo "Usage: ${0} [options]" |
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echo "Options:" |
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echo " -h, --help Show this help message" |
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echo " -v, --verbose Enable verbose mode" |
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echo " -f, --file <file> Specify a file" |
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echo " -n, --number <num> Specify a number (default: 42)" |
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} |
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# Universelle Parameterparser-Funktion |
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parse_args() { |
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POSITIONAL=() |
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while [[ $# -gt 0 ]]; do |
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case "$1" in |
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case "${1}" in |
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-h|--help) |
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echo "Usage: $0 [options]" |
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echo "Options:" |
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echo " -h, --help Show this help message" |
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echo " -v, --verbose Enable verbose mode" |
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echo " -f, --file <file> Specify a file" |
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echo " -n, --number <num> Specify a number (default: 42)" |
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display_help |
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exit 0 |
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;; |
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-v|--verbose) |
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@ -19,7 +22,7 @@ parse_args() { |
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shift |
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;; |
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-f|--file) |
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if [[ -z "$2" || "$2" == -* ]]; then |
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if [[ -z "${2}" || "${2}" == -* ]]; then |
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echo "Error: --file requires a non-empty argument." |
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exit 1 |
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fi |
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@ -27,11 +30,11 @@ parse_args() { |
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shift 2 |
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;; |
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-n|--number) |
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if [[ -z "$2" || "$2" == -* ]]; then |
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if [[ -z "${2}" || "${2}" == -* ]]; then |
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echo "Error: --number requires a non-empty argument." |
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exit 1 |
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fi |
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NUMBER="$2" |
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NUMBER="${2}" |
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shift 2 |
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;; |
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--) # Explicit end of options |
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@ -53,14 +56,4 @@ parse_args() { |
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# Defaults |
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VERBOSE="${VERBOSE:-false}" |
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NUMBER="${NUMBER:-42}" |
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} |
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# Aufruf der Funktion mit allen Skriptargumenten |
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parse_args "$@" |
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# Beispielnutzung |
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echo "Verbose mode: $VERBOSE" |
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echo "File: ${FILE:-<not set>}" |
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echo "Number: $NUMBER" |
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echo "Positional arguments: $@" |
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} |