Friday, 5 August 2011

Why Command Line arguments required


  1. Telling the command/utility which option to use.
  2. Informing the utility/command which file or group of files to process (reading/writing of files). 
To run two command with one command line.
Syntax:
command1;command2

$ date;who

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2 comments:

  1. Farid Yar Khan8 August 2011 at 00:51

    To combine two or more command line argument, use pipe characters ( |, >, < )

    like

    $ps -aef | grep

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  2. Dinesh8 August 2011 at 01:51

    Pipe character is used when output of first command will work as input of second command.
    For eg:-
    $ps -ef | grep load

    ps -ef fetch all the process running on ur machine,and grep filter the processes from the result,which is started from load.

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