Linux writing shell script processing catalina.out long time large amount of log footprint system space problem __linux

Today see the system space is occupied, and then look at large files, found that Catalina.out has been >60g, there are many solutions online, but still want to learn to write a shell script to deal with, in this record to write content, as well as the problems encountered and processing methods.

Directly on the content:

First: VI, Touch command to create auto-clear-currday-catalina_out-content.sh files, do not forget to give executable permissions: chmod +x Auto-clear-currday-catalina_ out-content.sh;

The second step: SH content is as follows:

##==========start==============##

#!/bin/sh

#auto-clear-currday-catalina_out-content

Cat/dev/null >/usr/local//tomcat7.0/logs/catalina.out

##==========end===============## relatively simple to clear the code;

Part III: I am using Linux crontab Timer task execution shell script, input crontab-e write timing content, as follows:

* * */home/auto-clear-currday-catalina_out-content.sh

Save write;

The problems encountered:

After the third write exit prompt: Errors in crontab file can ' t install. Here is your shell scripting code is wrong, but don't expect to be prompted for more detailed errors, because the need for branch ...

Before modification:

##==========start==============##

#!/bin/sh

#auto-clear-currday-catalina_out-content

Cat/dev/null >/usr/local//tomcat7.0/logs/catalina.out

##==========end===============##

After modification:

##==========start==============##

#!/bin/sh

#auto-clear-currday-catalina_out-content

Cat/dev/null

>/usr/local//tomcat7.0/logs/catalina.out

##==========end===============##