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    Tuesday, October 14, 2014

    How to find the path of any command in Linux

    The so called term used "command" is basically a binary file. If you try to read any of those files using any editor then you won't understand any thing as it is not human readable. These all commands are installed along with the relative packages with the installation of OS.

    These binary files are mostly located in the below 4 locations
    • /bin
    • /usr/bin 
    • /sbin 
    • /usr/sbin.
    You can either manually use the find or locate command to look out for the command in the above mentioned locations or alternatively you can use the below most suitable commands for this purpose

    which command

    # which "command_name"
    For eg:
    # which cp
    alias cp='cp -i'
    /bin/cp


    # which useradd
    /usr/sbin/useradd

    In case you get the below error# which samba
    /usr/bin/which: 
    no samba in (/usr/lib/qt-3.3/bin:/usr/local/sbin
    /usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin)

    It means your PATH variable does not contains the path for samba command. In that case which will not help you find the location of the command.

    whereis command

    So, you can use the below command for the same purpose
    # whereis command_name
    For example
    # whereis useradd
    useradd: /usr/sbin/useradd /usr/share/man/man8/useradd.8.gz


    I hope I made my self clear

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