blocks|key|855430|text|你在找exit吗？|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|855431|这是最好的狂欢指南。http://tldp.org/LDP/abs/html/|855432|在上下文中：|855433|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

...|code-block|syntax|javascript|855434|entityMap|0|LINK|mutability|MUTABLE|url|http://tldp.org/LDP/abs/html/exit-status.html|1|http://tldp.org/LDP/abs/html/^0|3|4|3|4|0|0|A|T|1|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|H|3|I|5|6|7|18|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|19|8|@]|D|@]|E|$M|N]]|$1|O|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]|W|$5|R|S|T|E|$U|X]]]]

Are you looking for <a href="http://tldp.org/LDP/abs/html/exit-status.html"><code>exit</code></a>?

This is the best bash guide around.
<a href="http://tldp.org/LDP/abs/html/">http://tldp.org/LDP/abs/html/</a>

In context:

<pre><code>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&gt;&amp;2
 exit 1 # terminate and indicate error
fi

...
</code></pre>

blocks|key|855480|text|exit+1是您所需要的一切。1是一个返回码，所以您可以根据需要更改它，比方说，1表示成功运行，-1表示失败或类似的东西。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|855481|entityMap^0|0|6|F|1|14|1|1C|2|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|G|$]]

<code>exit 1</code> is all you need. The <code>1</code> is a return code, so you can change it if you want, say, <code>1</code> to mean a successful run and <code>-1</code> to mean a failure or something like that.

blocks|key|855523|text|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。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|855524|#!/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|code-block|syntax|javascript|855525|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。|855526|entityMap^0|L|3|U|4|14|6|0|0|12|6|19|5|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|N|$]]

If you want to be able to handle an error instead of blindly exiting, instead of using <code>set -e</code>, use a <code>trap</code> on the <code>ERR</code> pseudo signal.

<pre><code>#!/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
</code></pre>

Other traps can be set to handle other signals, including the usual Unix signals plus the other Bash pseudo signals <code>RETURN</code> and <code>DEBUG</code>.

blocks|key|1069937|text|以下是实现此目的的方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1069938|#!/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+***+
************
'|code-block|syntax|javascript|1069939|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is the way to do it:

<pre><code>#!/bin/sh

abort()
{
 echo &gt;&amp;2 '
***************
*** ABORTED ***
***************
'
 echo "An error occurred. Exiting..." &gt;&amp;2
 exit 1
}

trap 'abort' 0

set -e

# Add your script below....
# If an error occurs, the abort() function will be called.
#----------------------------------------------------------
# ===&gt; Your script goes here
# Done!
trap : 0

echo &gt;&amp;2 '
************
*** DONE *** 
************
'
</code></pre>

I'm building a Shell Script that has a <code>if</code> function like this one:

<pre><code>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

...
</code></pre>

I want the execution of the script to finish after displaying the error message. How I can do this?

Exit a Script On Error

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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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 $kaliasthen    echo $jar_file signed sucessfullyelse    echo ERROR: Fa...

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