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  • Life always offers you a second chance ... Its called tomorrow !!!

    Friday, August 17, 2012

    How to clear cache in Linux

    Here I would like to share a script which you can use to clear your cache memory.

    IMPORTANT NOTICE:
    This is something one should not do as cache is used to speed up your work activity building a cache memory but still if you feel to clear your cache memory size then you can follow the following steps:

    Create a script
    # vi clearcache.sh
    #!/bin/bash
    sync; echo 3 > /proc/sys/vm/drop_caches

    save and exit
    # chmod +x clearcache.sh
    Sync should be run beacause this is a non destructive operation and dirty objects are not freeable. So we run sync in order to make sure all cached objects are freed.
    echo 1 is clearing only page cache
    echo 2 is to clear free dentries and inodes
    echo 3 is clearing page cache, dentries and inodes


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