TMP Clearing & Finding Large Files To Cleanup

It’s important to do spring cleaning every once in a while and ensure automated processes.

If your tmp dir is not getting cleared:

  • yum install tmpwatch – removes files older than 10 days.

Log rotation:

  • /var/log has a ton of logs, they should all be setup on logrotate (if they are not use some of the commands below to find out what is getting out of hand
  • Pay attention to config files that create logs in strange places outside of the common var/log path (likely because you set it up that way). eg, check your log paths for apache, nignx etc. Then custom configure a log rotation for it.

Generic command to find the top 50 files on your entire server

  • find / -type f -printf ‘%k kb %pn’| sort -nr | head -50

Use the find command to list *.sql specific files within the root folder and show the top 50.

  • find /root/ -type f -name *.sql -printf ‘%k kb %pn’| sort -nr | head -50

Same thing but using the DU function which doesn’t have as nice of a printout.

  • du -h /home | sort -n -r | head -n 50

Or you could just go around using this command. Start from root, change depth as necessary, and then CD into each directory you find suspiciously large.

  • du -h –max-depth=1

This will output the usage of each partition in the server. To list the size of a specific directory, run the following command:

  • # du -sh /home/

If you want to list all the subdirectory sizes under /home, run the following command:

  • # du -sh /home/*

Top X files in a dirtory that are larger than 10 MB, sorted by size

  • find . -maxdepth 1 -type f -size +10M -print0 | xargs -0 ls -Shal | head

Note, the find commands could take a while…

http://www.cyberciti.biz/faq/find-large-files-linux

http://www.cyberciti.biz/faq/how-do-i-find-the-largest-filesdirectories-on-a-linuxunixbsd-filesystem

http://knowledgelayer.softlayer.com/procedure/how-can-i-check-my-hard-disk-usage-linux

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