"Gadget" shell detects process status exception auto restart

The shell script is an operation of the basic skills of personnel, in peacetime work, in order to deal with some anomalies or query data, I often have to write shell scripts automated processing.

Here to share a script I wrote to detect the status of the process and automatically restart, very simple, welcome to use.

The code is as follows:

#!/bin/bash#filename:tomcatcheck.sh# Feature Description: Detects the number of Tomcat processes, 0, automatically restarts the source ~/.bash_profilenum= ' Ps-aef |grep Tomcat |grep- V grep|wc-l ' echo ' ' date ' check process ' number is $num ' # # # ' date ' output log contains time if ["$num"-eq "0"]; Thenservice Tomcat St Art # # # #重启tomcatelif [$num-gt 1]; Thenecho "' Date ' tomcat ' s process more than 1,is $num" Elseecho "' Date ' Tomcat ' s process working normal! ' Fiexit 0

Set up a scheduled task, check the timing, and output the test results to log.

*/10 * * * */home/user/tomcatcheck.sh >>/home/user/tomcatcheck.log 2>&1

There's a little pit. Note that the NUM result in the above script is a string, and a logical judgment should be made by string when making the If judgment.

"Gadget" shell detects process status exception auto restart