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Tcsh: How to suppress error messages.

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# 1  
Old 09-24-2014
Tcsh: How to suppress error messages.
Hallo,

I wrote some script:

95% of the script's output consists of error messages like "mkdir: cannot create directory ‘final': File exists
Exit 1" and "rm: No match. Exit 1".

These messages are not harmful at all, but they make the output almost unreadable.

How can I get rid of these messages to make the output readable?

Best regards,
Daniel
# 2  
Old 09-24-2014
This is the terrible error handler.
It emergency-exits on built-in commands.
For the external command rm you can try to redirect stderr (and stdout) with
Code:
rm ... >& /dev/null

Last edited by MadeInGermany; 09-24-2014 at 05:44 PM.. Reason: typo
This User Gave Thanks to MadeInGermany For This Post:
DanielDD
# 3  
Old 09-24-2014
From the tcsh manpage:
Code:
       The  shell  cannot  presently  redirect  diagnostic output without also
       redirecting standard output, but `(command  >  output-file)  >&  error-
       file'  is often an acceptable workaround.  Either output-file or error-
       file may be `/dev/tty' to send output to the terminal.

Thus you could try following:
Code:
( yourscript > /dev/tty ) >& /dev/null

This User Gave Thanks to junior-helper For This Post:
DanielDD
# 4  
Old 09-24-2014
Both methods reduce the number of messages.
There are still a couple of "Exit 1" messages.

DanielDD
# 5  
Old 09-24-2014
Your tcsh script seems to have printexitvalue set, maybe set in your ~/.cshrc or ~/.tcshrc.
Undo with
Code:
unset printexitvalue

You can suppress the initial run of .cshrc and .tcshrc by a -f option in the shebang (first line)
Code:
#!/bin/tcsh -f

This User Gave Thanks to MadeInGermany For This Post:
DanielDD
# 6  
Old 09-24-2014
It works, thanks alot.

Daniel
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