helpOSTS

It's UWAweek 47

helpOSTS

This forum is provided to promote discussion amongst students enrolled in Open Source Tools and Scripting.

Please consider offering answers and suggestions to help other students! And if you fix a problem by following a suggestion here, it would be great if other interested students could see a short "Great, fixed it!" followup message.

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UWA week 20 (1st semester, week 11) ↓

Doubt regarding stderr (all 3)

6:16pm Thu 16th May, ANONYMOUS

Hi Professor, If i come across any inconsistent rows more than the header i should be redirect them to stderr.I was trying the same ,still its print me the msg on the screen(redirected to /dev/stderr).so i tried with simple echo statement in terminal to check whether its really redirecting or not.but still its showing me on screen.but when i use the path /dev/null it not showing. So am i doing wrong in redirection or should be done differently? Thanks.

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Doubt regarding stderr (all 3)

11:34am Sat 18th May, ANONYMOUS

By default both stdout and stderr will be displayed on the screen. This implies, texts displayed on the screen may come from different sources. So, if you are redirecting in a correct manner, you should not worry about that.

Doubt regarding stderr (all 3)

3:48pm Sun 19th May, Michael W.

ANONYMOUS wrote:

By default both stdout and stderr will be displayed on the screen. This implies, texts displayed on the screen may come from different sources. So, if you are redirecting in a correct manner, you should not worry about that.

Hi When you are working to the screen you cannot tell whether the data came from stdout or stderr. The only way is to redirect the streams:

program_tested > from_stdout 2> from_stderr

Cheers MichaelW

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