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Full Discussion: Is there a way to tee stderr from a command that's redirecting error to a file?
Top Forums Shell Programming and Scripting Is there a way to tee stderr from a command that's redirecting error to a file? Post 302355339 by sumgi on Tuesday 22nd of September 2009 10:39:03 AM
Old 09-22-2009
Is there a way to tee stderr from a command that's redirecting error to a file?
I'm not a complete novice at unix but I'm not all that advanced either. I'm hoping that someone with a little more knowledge than myself has the answer I'm looking for.

I'm writing a wrapper script that will be passed user commands from the cron...

Ex:
Code:
./mywrapper.sh "/usr/bin/ps -ef | grep foo > log/ps.out 2>&1"

The wrapper will execute them from the cron and log start and stop times and any errors or exit codes.

Question:
However in the case as above that a user is redirecting their errors to their own log file is there a good way to sample the error such that both the user log and the wrapper log get the error message?

Let me know if you need more info, thanks!

Currently I am grabbing the stderr away from the user command and sending it to a temp file. However this method removes the error from the user log.

Ex:
Code:
eval "$1 2> temp.err"
ERR=`cat temp.err`
rm temp.err

Last edited by sumgi; 09-22-2009 at 02:05 PM..
 

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LEARN ABOUT OSF1

strclean

strclean(8)						      System Manager's Manual						       strclean(8)

NAME

       strclean - Removes outdated STREAMS error log files

SYNOPSIS

       /usr/sbin/strclean [-d logdir] [-a age]

FLAGS

       Specifies  a  maximum  age  in  days for the STREAMS error log files if this not the default age of 3.  The value of age must be an integer
       greater than or less than 3.  Specifies a directory for the location of the STREAMS error log files to  be  removed  if	this  is  not  the
       default directory /var/adm/streams.

DESCRIPTION

       The  strclean  command cleans the STREAMS error logger directory of log files (error.mm-dd) that contain error messages sent by the STREAMS
       log driver (strlog).  If no other directory is specified (the logdir argument), the command removes error log files in the /var/adm/streams
       directory.  If no other age is specified (the age argument), the command removes error log files that have not been modified in 3 days.

       The strclean command is executed by the cron daemon on a periodic basis.

EXAMPLES

       To remove the day-old error log files from a directory called /tmp/streams, enter: strclean -d /tmp/streams -a 1

FILES

       One or more error log file or files on which strclean operates.	The mm.dd in the filename indicates the month and day of the messages con-
       tained in the file.

RELATED INFORMATION

       Commands: strerr(8), cron(8).

       Interfaces: strlog(7).  delim off

																       strclean(8)
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