可以混合使用选项和参数

Question

是否可以混合使用选项(带有getopts(和参数($1....$10(？

Answer 1

getopt(单数(可以处理混合的选项和参数，以及短-s和长--long选项和--到结束的选项处理。

请参阅此处file1和file2如何与选项混合，并将它们分开：

$ args=(-ab opt file1 -c opt file2)
$ getopt -o ab:c: -- "${args[@]}"
 -a -b 'opt' -c 'opt' -- 'file1' 'file2'

典型用法如下所示：

#!/bin/bash
options=$(getopt -o ab:c: -l alpha,bravo:,charlie: -- "$@") || exit
eval set -- "$options"
# Option variables.
alpha=0
bravo=
charlie=
# Parse each option until we hit `--`, which signals the end of options.
# Don't actually do anything yet; just save their values and check for errors.
while [[ $1 != -- ]]; do
    case $1 in
        -a|--alpha)   alpha=1;    shift 1;;
        -b|--bravo)   bravo=$2;   shift 2;;
        -c|--charlie) charlie=$2; shift 2;;
        *) echo "bad option: $1" >&2; exit 1;;
    esac
done
# Discard `--`.
shift
# Here's where you'd actually execute the options.
echo "alpha:   $alpha"
echo "bravo:   $bravo"
echo "charlie: $charlie"
# File names are available as $1, $2, etc., or in the "$@" array.
for file in "$@"; do
    echo "file: $file"
done