redirect only the standard error output to mail Post: 302153779

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Top Forums Shell Programming and Scripting redirect only the standard error output to mail Post 302153779 by barkath on Wednesday 26th of December 2007 06:55:46 PM

12-26-2007

Registered User

redirect only the standard error output to mail

I'm writing a script using file descriptor 2 (std error) to send an email only if the command fails or errors out but the script always emails me irrepective of whether it fails or not. It will not email the /tmp/check.error file output if doesn't error out just the mail with the subject "Cannot run check script on machB".

Any suggestions would be really appreciated. Thanks

Code:

###(Note: I have a mail problem with the one on 4th line, the other one works OK)
==========================================================================================
#!/bin/ksh

echo "" >> /tmp/sync.error

rsync -goptvz -e ssh /var/sync.all machB:/var/sync.all 2>>/tmp/sync.error

ssh -l root machB '/usr/local/check' 2>>/tmp/check.error | mail -s "Cannot run check script on machB" email@removed  

if [ $? = 0 ]
then
  date +"%D %T:$script Successfully executed." >> /dev/null 

else
  date +"%D %T:$script Unsuccessfully executed." >> /tmp/sync.error
  date +"%D %T: Exiting script." >> /tmp/sync.error
  mail -s "Cannot sync the sync.all file to machB, plz. look at /tmp/sync.error" email@removed < /tmp/sync.error

  exit 1
fi

date +"%D %T: Sync of printcap.all file completed." >> /tmp/sync.error

barkath

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LEARN ABOUT SUNOS

sync

sync(2) 							   System Calls 							   sync(2)

NAME

       sync - update super block

SYNOPSIS

       #include <unistd.h>

       void sync(void);

DESCRIPTION

       The  sync() function writes all information in memory that should be on disk, including modified super blocks, modified inodes, and delayed
       block I/O.

       Unlike fsync(3C), which completes the writing before it returns, sync() schedules but does not  necessarily  complete  the  writing  before
       returning.

USAGE

       The  sync()  function  should  be  used	by  applications that examine a file system, such as fsck(1M), and df(1M), and is mandatory before
       rebooting.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       df(1M), fsck(1M), fsync(3C), attributes(5), standards(5)

SunOS 5.10							    5 Jul 1990								   sync(2)

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