On 19 August 2011 18:57, Prasanna Venkadesh <[email protected]> wrote: > On Fri, Aug 19, 2011 at 5:23 PM, Sathia S <[email protected]> wrote: >> >> > espeak 'hi' > /dev/null 2>&1 > > > Thanks all for helping me out. The above thing works perfect. and can anyone > give me explanation of what it does? One is it redirects to /dev/null and > what does 2>&1 really does?
2 is error stream and defines where error are to be displayed . It is by deafult set to your monitor. here you are re-directing standard error stream to standard error to that of where standard output goes which is going to /dev/null. I hope you know what is /dev/null. Read up on file descriptors and i/o redirection in unix to know more. --ashwin _______________________________________________ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
