Question

如果我在日志文件中找到字符串，我的要求是发送电子邮件;但是，我应该只发送一次。我写的shell脚本粘贴在下面;但是，即使条件不匹配，也会通过cron作业发送重复的电子邮件。

#!/bin/bash
filexists=""
lbdown=""`enter code here`
if [ -f "/var/run/.mailsenttoremedy" ];
then
   filexists=true
else
   filexists=false
echo filexists is $filexists
fi

if tail -1000 /usr/ibm/tivoli/common/CTGIM/logs/trace.log | grep "Root exception is java.net.NoRouteToHostException: No route to host"
then
    echo error found
        lbdown=true
echo lbdown status after if in tail is $lbdown
else
lbdown=false
echo lbdown status after else in tail is $lbdown 
fi

if filexists=false && lbdown=true
then
{
mailx -S intrelay.sysco.com -r xxx@yyy.com -s "**DEV ALERT**Load Balancer Connection not Available" -v xxx@yyy.com < /dev/null
date > /var/run/.mailsenttoremedy
}
fi

if filexists=true && lbdown=true
then
{
echo MAIL ALREADY SENT
}
fi

if lbdown=false
then
rm -f /var/run/.mailsenttoremedy
fi
echo lbdown is $lbdown and filexists is $filexists

回声输出是：

filexists is false
Root exception is java.net.NoRouteToHostException: No route to host
error found
lbdown status after if in tail is true
Null message body; hope that's ok
Mail Delivery Status Report will be mailed to <xxx@yyy.com>.
MAIL ALREADY SENT
lbdown is false and filexists is true

Answer 1

您可以尝试if请求的正常声明...

Bash格式：

if [ $(tail -1000 /usr/ibm/tivoli/common/CTGIM/logs/trace.log | grep "Root exception is java.net.NoRouteToHostException: No route to host") != "" ];
then

if  [ "$filexists" = "false" ] && [ "$lbdown" = "true" ];
then

if [ "$lbdown" = "false" ];
then

通过if的测试命令应该被[和]包围，至少是具有多个条件的命令。如果您有兴趣，可以使用guide for if and some sample codes。

此外，变量至少需要$。通常它们也被{和}包围。

PS。你可以使用更好的格式来发布帖子，这样人们就不会对你进行投票。

Answer 2

对于其他人，工作代码是：

#!/bin/bash
filexists=""
lbdown=""
if [ -f "/var/run/.mailsenttoremedy" ];
then
   filexists=true
else
   filexists=false
echo filexists is $filexists
fi

if tail -1000 /usr/ibm/tivoli/common/CTGIM/logs/trace.log | grep "nn"
then
    echo error found
        lbdown=true
echo lbdown status after if in tail is $lbdown
else
lbdown=false
echo lbdown status after else in tail is $lbdown 
fi

if [[ "$filexists" = "false" && "$lbdown" = "true" ]];
then
mailx -S intrelay.sysco.com -r xxx@yyy.com -s "**DEV ALERT**Load Balancer Connection not Available" -v xxx@yyy.com < /dev/null
date > /var/run/.mailsenttoremedy
fi

if [[ "$filexists" = "true" && "$lbdown" = "true" ]];
then
echo MAIL ALREADY SENT
fi

if [ "$lbdown" = "false" ];
then
rm -f /var/run/.mailsenttoremedy
echo removing file
fi
echo lbdown is $lbdown and filexists is $filexists

停止shell脚本发送重复的电子邮件 - 使用文件标志

2 个答案: