Shell 脚本语法错误:意外的文件结尾 [英] Shell Script Syntax Error: Unexpected End of File

问题描述

在下面的脚本中我得到一个错误:

In the following script I get an error:

语法错误:文件意外结束

syntax error: unexpected end of file

这是什么错误，我该如何解决?它指向函数被调用的那一行.

What is this error how can I resove it? It is pointing at the line whee the function is called.

#!/bin/sh

expected_diskusage="264"
expected_dbconn="25"
expected_httpdconn="20"
expected_cpuusage="95"
#expected_fd="100"

httpdconn=`ps -ef|grep -i httpd|grep -v grep|wc -l` #httpd connections
cpu_usage=`ps aux|awk 'NR > 0 { s +=$3 }; END {print s}'`
disk_usage=`df -h|awk {'print $2'}|head -n3|awk 'NF{s=$0}END{print s}'`
#db_connections=`mysql -uroot -pexxxxxx -s -N -e "show processlist"|wc -l`

db_connections=6
cld_alert()
{
    nwconn=$1
    cpu_usage=$2
    disk_usage=$3
    db_connections=$4
    message=$5
    `touch /tmp/alert.txt && > /tmp/alert.txt`
    date=`date`
    echo -e "$date\n" > /tmp/alert.txt
    echo -e "$message" >> /tmp/alert.txt
    path="/proc/$httpd/fd/";
    cd $path
    tfd=`ls -l|wc -l`;
    sfd=`ls -ltr|grep sock|wc -l`;
    echo "Total fds: $tfd" >> /tmp/alert.txt
    echo "Socket fds: $sfd" >> /tmp/alert.txt
    echo "Other fds: $[$tfd - $sfd]" >> /tmp/alert.txt


    freememory=`vmstat | awk '{if (NR == 3) print "Free Memory:"\$4}'`;
    echo "Free memory :$freememory" >> /tmp/alert.txt
    Bufferedmemory=`vmstat | awk '{if (NR == 3) print "Buffered Memory:"\$5}'`;
    echo "Buffered memory $Bufferedmemory" >> /tmp/alert.txt
    CacheMemory=`vmstat | awk '{if (NR == 3) print "Cache Memory:"\$6}'`;
    echo "Cache memory : $CacheMemory" >> /tmp/alert.txt
    sshconn=`netstat -an|grep 22|wc -l`  #ssh connections
    httpsconn=`netstat -an|grep 443|wc -l`  #https connections
    wwwconn=`netstat -an|grep 80|wc -l`  #www connections
    echo "Disk usage is $disk_usage" >> /tmp/alert.txt
    echo "DB connections $db_connections" >> /tmp/alert.txt
    echo "Network connections $nwconn" >> /tmp/alert.txt
    echo "CPU Usage: $cpu_usage" >> /tmp/alert.txt
    topsnapshot=`top -n 1 -b`
    echo "===========================TOP COMMAND    SNAPSHOT====================================================";
    echo "$topsnapshot" >> /tmp/alert.txt
    echo"==================PS COMMAND SNAPSHOT=============================================================="
    entireprocesslist=`ps -ef`
    echo "$entireprocesslist" >> /tmp/alert.txt


    echo Hello hi"";

}



message=""
if [ ${disk_usage%?} -le $expected_diskusage ]    ##{x%?} Removes last character
then
    echo "disk usage exceeded";
    message="Disk usage limit exceeded \nCurrent disk usage is $disk_usage\nConfigured disk usage is    $expected_diskusage\n\n\n\n\n";
    #Checking for CPU usage
    if [ $cpu_usage -ge $expected_cpuusage]    ##{x%?}
    then
        echo "CPU usage exceeded";
        if [ $message -ne "" ]
        then
            message="$message\n\nCPU usage exceeded configured usage limit \nCurrent CPU usage is $cpu_usage\nConfigured CPU usage is $expected_cpuusage\n\n\n\n\n";
        else
            message="CPU usage exceeded configured usage limit \nCurrent CPU usage is   $cpu_usage\nConfigured CPU usage is $expected_cpuusage\n\n\n\n\n";
        fi ;
    fi
    #Checking for httpd connections
    if [ $httpdconn -ge $expected_httpdconn]    ##{x%?}
    then
        echo "HTTPD connections exceeded";
        if [ $message -ne "" ]
        then
            message="$message\n\nHTTPD connections exceeded configured usage limit \nCurrent HTTPD connections is $httpdconn\nConfigured HTTPD connection is $expected_httpdconn";
        else
            message="HTTPD connections exceeded configured usage limit \nCurrent HTTPD connections is $httpdconn\nConfigured HTTPD connection is $expected_httpdconn";
        fi ;
    fi ;
    message="$message\n\n\n\n\n";
    value=$(cld_alert $message $httpdconn $cpu_usage $disk_usage $db_connections)

推荐答案

请注意，自撰写此答案以来，原始帖子已被编辑并已重新格式化.您应该查看历史记录以查看原始格式以了解此答案的上下文.

Note that the original post has been edited since this answer was written and has been reformatted. You should look at the history to see the original formatting to understand the context for this answer.

当你有不匹配的结构时经常会发生这个错误——也就是说，你没有匹配的双引号，匹配的单引号，没有关闭一个控制结构，比如一个缺失的 fi 和 >if，或者缺少带有 for 的 done.

This error occurs often when you have mismatched structure - that is, you do not have matching double quotes, matching single quotes, have not closed a control structure such as a missing fi with an if, or a missing done with a for.

发现这些问题的最佳方法是使用正确的缩进，这将显示控制结构损坏的位置，以及语法突出显示，这将显示引号不匹配的位置.

The best way to spot these is to use correct indentation, which will show you where you have a broken control structure, and syntax highlighting, which will show you where quotes are not matched.

在这种特殊情况下，我可以看到您缺少一个 fi.在代码的后半部分，您有 5 个 if 和 4 个 fi.但是，您还有许多其他问题 - 您的反引号 touch/tmp/alert.txt... 命令在语法上无效，并且您需要在 if<的右括号前留一个空格/code> 测试.

In this particular case, I can see you are missing a fi. In the latter part of your code, you have 5 ifs and 4 fis. However you also have a number of other problems - your backquoted touch /tmp/alert.txt... command is syntactically invalid, and you need a space before the closing bracket of an if test.

清理你的代码，错误开始突出.

Clean up your code, and errors start to stand out.

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