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  Linux Getting Started Tutorial: / var / spool / clientmqueue fill the root directory
  Add Date : 2018-11-21      
  Because many Linux system will open cron, cron and procedures performed are output, the output will be sent by mail cron users, and sendmail does not start so I had these documents; so these files are not any important files, delete!

So cd / var / spool / clientmqueue
rm * (rm -f *) will not display the parameter list is too long (-bash: / bin / rm: Argument list too long) can not be directly deleted with rm, how to do?
Too often these files are deleted with rm very slow, you can enter as root / var / spool / clientmqueue /, execute: ls | xargs rm -f can delete all

Modify cron configuration
The inside of the back crontab command with> / dev / null 2> & 1. Such as: ls -l /> / dev / null 2> & 1

Into the / var / spool / cron under
[Root@linuxhost cron] # crontab -u user -e - modify each user's implementation plan, with / dev / null 2> & 1

cron knowledge:
2>: redirect errors.
2> & 1: error redirect the output to be sent. That is, the execution result of the above command is redirected to / dev / null, that is abandoned, while the error occurred is also abandoned.
Use du -sh * or du -sh / * Check the size of the directory to find a large space directory
Note: / is the system directory, you can cd to the current directory execute du -sh *
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