在 BASH 脚本中不起作用 'WHILE GETOPS'

Question

我有一个带有两个参数的脚本，主机和该主机的域名。看：

#!/bin/bash

data=$(date +%Y.%m.%d)
log=/var/log/upgrade_old_ALLOS.log.$data

function show_help {
echo "Usage: [=12=] -h host -d dns"
echo "For example: ./upgrade_old_ALLOS.sh -h wwe.com01 -d wwe.com"
}

function logging {
echo $(date) "______" "" | tee -a $log
}

while getopts h:d:s opt; do
case $opt in
s)
    show_help
    exit 0
    ;;
h)
if [ -z "$OPTARG" ]; then
    logging "Error. Name of host is not provided"
    show_help
    exit 1
else
    host="$OPTARG"
fi
;;
d)
if [ -z "$OPTARG" ]; then
    logging "Error. Domain is not provided"
    show_help
    exit 1
else
    dns="$OPTARG"
fi
;;
*)
    show_help >&2
    exit 1
    ;;
esac
done

if [ -z "$host" ]; then
    logging "Host was not provided"
    show_help
    exit 1
fi

if [ -z "$dns" ]; then
    logging "Domain was not provided"
    show_help
    exit 1
fi

host=""
logging "$host"
echo $host > /root/tag
dns=""
logging "$dns"
echo $dns >> /root/tag

if [ -f "/root/tag" ] ; then
    hostname=$(awk NR==1 "/root/tag")
    domain=$(awk NR==2 "/root/tag")
    logging "$hostname"
    logging "$domain"
else
    logging "Not found /root/tag"
    exit 1
fi

我应该像这样执行这个脚本：

./upgrade_old_ALLOS.sh -h wwe.com01 -d wwe.com

但是在结果文件中，我有这个：

-h
wwe.com01

但我应该：

wwe.com01
wwe.com

哪里出错了？请帮忙。

Answer 1

您在 getopts 之后覆盖了 host 和 dns 的值...您的脚本按预期运行

./upgrade_old_ALLOS.sh -h wwe.com01 -d wwe.com
 : -h
 : wwe.com01
 : -d
 : wwe.com

host="" => host = "-h"
dns=""  => dns = "wwe.com01"

删除 host="" 和 dns="" 它会做你想做的事

在 BASH 脚本中不起作用 'WHILE GETOPS'

Does not work 'WHILE GETOPS' in BASH script

bash

shell

while-loop

getopt

getopts