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  Unix / Linux commonly used to clean up disk space command
  Add Date : 2018-11-21      
  It is recommended several Unix / Linux commonly used method for cleaning up disk space:

The first method:

find ./ -name "* .log *" -exec echo ">" {} \; | sh

The meaning of this command is to search the current directory to ".log" the end of the file and empty it, this is suitable for long-term presence of the log and delete inconvenient time of use. Use ">" flush operation performed when

Back to add "| sh".

The second method:

find ./ -name "* .log" -mtime +1 -exec compress {} \;
find ./ -name "* .log" -mtime +1 -exec rm {} \;

The meaning of this command is to search the current directory to ".log" files ending, -mtime +1 means that the file was last modified more than one day, and to meet these two conditions compress files or delete operation


The third method:

. Ls TRACE _ * log | perl -lne '@ a = stat ($ _); if ((time () - $ a [9]) / 3600> 6) {print "rm $ _";}' | sh

. Ls ULOG * [0-9] | perl -lne '@ a = stat ($ _); if ((time () - $ a [9]) / 3600> 24) {print "compress $ _";} '| sh

ls everyone is familiar with, is to list the files under the current folder, the latter is perl perl -lne useful command-line arguments, stat is a function which can be obtained various documents state, "$ _" is filename wild card by the foregoing ls function listed, time () function is the system to get the current system time, "$ a [9]" is from the front of the stat function to get the status of a file in the ninth parameter, that is time of the file, "if ((time () - $ a [9]) / 3600> 6)" means the obvious, is that the current system time minus file time if more than 6 hours, then it is executed later operating.

The second command is similar.

In general, the system can find the log directory of each program, and agreed to the need to retain log each time, choose the appropriate command, written in clean scripts, and then configure the crontab system on a regular basis, thus achieving a disk automatic maintenance of space, so there is no excessive because the log and the system disk space is filled making the program unable to perform the normal problems.
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