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how to store the output from ipcbeginprocess into the another file

saurabh96

Hello Guys,

I have query regarding ipcbeginProcess-    below code am running


command=strcat("xterm -ls +hold -e \"./xyz.sh -version\"-parentTool virtuoso" )
cmdPid = ipcBeginProcess(command)
ipcWait(cmdPid)
cmd = ipcReadProcess(cmdPid)
abc = ipcBeginProcess(strcat("cmd > tmp.txt"))
ipcWait(abc)

after successfully running it is creating blank tmp.txt......i want to store the output from ipcreadprocess..

How i can correct it?

regards,

siddhart

Parents

  • That''s not surprising - the xterm is not outputting anything on standard output, so the chances are that the second ipcBeginProcess is not working. Have you tried printing what is in the variable cmd? Also, you're then using strcat to concatenate a fixed string "cmd > tmp.txt" which is not reading this variable cmd? I have absolutely no idea what you're trying to do here, but the code above almost certainly doesn't do what you are trying to do!

    Andrew

  • in reply to Andrew Beckett

    Hi Andrew,

    1) Am trying to achiive the standard output from xterm in file tmp.txt............means when i start running xyz.sh file xterm opens and runs starts and that i want to store in tmp.txt file

    2)Also why  xterm is not outputting anything on standard output...how i can correct it?

    3)Yes  tried printing what is in the variable cmd is coming nil

    how i can correct it..pls guide

  • in reply to saurabh96

    But xterm doesn't output anything on standard output - it's not supposed to! It's supposed to launch a new terminal, and then anything you run appears within that terminal.

    Perhaps you meant to do something like:

    command=strcat("xterm -ls +hold -e \"./xyz.sh -version > tmp.txt\"" )

    i.e. redirect the output from the xyz.sh command that you're invoking. However, if you're redirecting the output, why even use an xterm at all? 

    It's still a mystery to me what you're trying to do here - so it's very difficult to "guide" you.

    Andrew

Reply
  • in reply to saurabh96

    But xterm doesn't output anything on standard output - it's not supposed to! It's supposed to launch a new terminal, and then anything you run appears within that terminal.

    Perhaps you meant to do something like:

    command=strcat("xterm -ls +hold -e \"./xyz.sh -version > tmp.txt\"" )

    i.e. redirect the output from the xyz.sh command that you're invoking. However, if you're redirecting the output, why even use an xterm at all? 

    It's still a mystery to me what you're trying to do here - so it's very difficult to "guide" you.

    Andrew

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