bash 检查命令响应是否不包含 str
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原文地址: http://stackoverflow.com/questions/17020823/
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Checking if command response does not contain str
提问by WASasquatch
I have a script which works great... but I'd like it not do anything if there is no one online. I looked over all the documentation on how to check if a str is not within a variable, but it always thows the same error, which I assume may be something else, but literally nothing else is touched besides the addition of the fi at the bottom for the new if statement to check if there is no users online...
我有一个很好用的脚本……但如果没有人在线，我不希望它做任何事情。我查看了有关如何检查 str 是否不在变量内的所有文档，但它总是会出现相同的错误，我认为这可能是其他错误，但实际上除了在底部添加 fi 之外没有触及其他任何内容对于新的 if 语句来检查是否没有用户在线...
Error: startAnnouncement.sh: 44: [[: not found
错误： startAnnouncement.sh: 44: [[: not found
#!/bin/bash
checkServer=$(/etc/init.d/minecraft status)
checkUsers=$(/etc/init.d/minecraft command list)
cd /.smc
# Is the server even running?
if [[ $checkServer =~ "is running" ]]; then
#Is anyone online to even see the message...?
if [[ ! $checkUsers =~ "are 0 out" ]]; then
# No count file? Create it.
if [ ! -f /.smc/lastAnnouncement.txt ]; then
echo 0 > /.smc/lastAnnouncement.txt
fi
# Load count
lastAnn=$(cat /.smc/lastAnnouncement.txt)
# ANNOUNCEMENTS
announcement[0]='Dont forget to check out http://fb.com/pyrexiacraftfans for news and updates'
announcement[1]='Use our Facebook page to request land protection! Visit http://fb.com/pyrexiacraftfans'
announcement[2]='Stay tuned for the announcement of our spawn build competition soon on our Facebook page!'
announcement[3]='We have upgraded the server with mcMMO and Essentials Economy! Stay tuned for shop openings!'
announcementText=${announcement[$lastAnn]}
# Send announcement
sendAnnouncement=$(/etc/init.d/minecraft command say $announcementText)
# Next announcement count
((++lastAnn))
# Write next announacment count
# Should we restart announcement que?
if [ $lastAnn -gt $((${#announcement[@]}-1)) ]; then
echo 0 > /.smc/lastAnnouncement.txt
else
echo $lastAnn > /.smc/lastAnnouncement.txt
fi
fi
fi
回答by glenn Hymanman
Your conditions don't actually use regex-special chars,
您的条件实际上并不使用正则表达式特殊字符，
if [[ $checkServer =~ "is running" ]]; then
if [[ ! $checkUsers =~ "are 0 out" ]]; then
Also, you need to use !~operator on the 2nd condition: you have too many arguments
此外，您需要!~在第二个条件下使用运算符：您的参数太多
So you might as well use glob patterns.
所以你不妨使用 glob 模式。
if [[ $checkServer == *"is running"* ]]; then
if [[ $checkUsers != *"are 0 out"* ]]; then
