出错时退出脚本
出错时退出脚本
提问于 2010-12-08 05:10:38
我正在构建一个外壳脚本，它具有如下所示的if函数：
if jarsigner -verbose -keystore $keyst -keystore $pass $jar_file $kalias
then
echo $jar_file signed sucessfully
else
echo ERROR: Failed to sign $jar_file. Please recheck the variables
fi
...我希望在显示错误消息后完成脚本的执行。我怎么能做到这一点？
回答 4
Stack Overflow用户
回答已采纳
发布于 2010-12-08 05:13:49
你在找exit吗？
这是最好的狂欢指南。http://tldp.org/LDP/abs/html/
在上下文中：
if jarsigner -verbose -keystore $keyst -keystore $pass $jar_file $kalias
then
echo $jar_file signed sucessfully
else
echo ERROR: Failed to sign $jar_file. Please recheck the variables 1>&2
exit 1 # terminate and indicate error
fi
...Stack Overflow用户
发布于 2010-12-08 13:12:40
如果您希望能够处理错误而不是盲目退出，请在ERR伪信号上使用trap，而不是使用set -e。
#!/bin/bash
f () {
errorCode=$? # save the exit code as the first thing done in the trap function
echo "error $errorCode"
echo "the command executing at the time of the error was"
echo "$BASH_COMMAND"
echo "on line ${BASH_LINENO[0]}"
# do some error handling, cleanup, logging, notification
# $BASH_COMMAND contains the command that was being executed at the time of the trap
# ${BASH_LINENO[0]} contains the line number in the script of that command
# exit the script or return to try again, etc.
exit $errorCode # or use some other value or do return instead
}
trap f ERR
# do some stuff
false # returns 1 so it triggers the trap
# maybe do some other stuff可以设置其他陷阱来处理其他信号，包括通常的Unix信号加上其他Bash伪信号RETURN和DEBUG。
Stack Overflow用户
发布于 2014-03-05 23:43:35
以下是实现此目的的方法：
#!/bin/sh
abort()
{
echo >&2 '
***************
*** ABORTED ***
***************
'
echo "An error occurred. Exiting..." >&2
exit 1
}
trap 'abort' 0
set -e
# Add your script below....
# If an error occurs, the abort() function will be called.
#----------------------------------------------------------
# ===> Your script goes here
# Done!
trap : 0
echo >&2 '
************
*** DONE ***
************
'页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/4381618
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