Redirection question Post: 302519310

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Top Forums Shell Programming and Scripting Redirection question Post 302519310 by radoulov on Tuesday 3rd of May 2011 04:32:00 PM

05-03-2011

Registered User

You could remove the redirect inside func2:

Code:

zsh-4.3.11[t]% cat t1.ksh 
#!/bin/ksh
func2()
{
  diff /tmp/jdlkwjdlkejew /tmp/djlkwejdlewdjew
}

func1()
{
  let counter=0
  while [ $counter -lt 5 ]
  do
   print -u2 "Error: In main function"
   func2
   let counter=$counter+1
  done

} >$OUTPUT_FILE 2>$ERR_FILE

OUTPUT_FILE=/tmp/junk.out
ERR_FILE=/tmp/junk.err
rm -rf $OUTPUT_FILE $ERR_FILE
func1
zsh-4.3.11[t]% ./t1.ksh 
zsh-4.3.11[t]% cat /tmp/junk.err 
Error: In main function
diff: /tmp/jdlkwjdlkejew: No such file or directory
diff: /tmp/djlkwejdlewdjew: No such file or directory
Error: In main function
diff: /tmp/jdlkwjdlkejew: No such file or directory
diff: /tmp/djlkwejdlewdjew: No such file or directory
Error: In main function
diff: /tmp/jdlkwjdlkejew: No such file or directory
diff: /tmp/djlkwejdlewdjew: No such file or directory
Error: In main function
diff: /tmp/jdlkwjdlkejew: No such file or directory
diff: /tmp/djlkwejdlewdjew: No such file or directory
Error: In main function
diff: /tmp/jdlkwjdlkejew: No such file or directory
diff: /tmp/djlkwejdlewdjew: No such file or directory
zsh-4.3.11[t]%

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LEARN ABOUT SUNOS

suspend

suspend(1)							   User Commands							suspend(1)

NAME

       suspend - shell built-in function to halt the current shell

SYNOPSIS

   sh
       suspend

   csh
       suspend

   ksh
       suspend

DESCRIPTION

   sh
       Stops the execution of the current shell (but not if it is the login shell).

   csh
       Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.

   ksh
       Stops the execution of the current shell (but not if it is the login shell).

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)

SunOS 5.10							    15 Apr 1994 							suspend(1)

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