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Full Discussion: Variable scope in bash
Top Forums Shell Programming and Scripting Variable scope in bash Post 302589306 by haaru on Wednesday 11th of January 2012 09:03:38 AM
Old 01-11-2012
Variable scope in bash
Hello! Before you "bash" me with
- Not another post of this kind
Please read on and you will understand my problem...

I am using the below to extract a sum of the diskIO on a Solaris server.

Code:
#!/bin/sh
PATH=/usr/bin:/usr/sbin:/sbin; export PATH
TEMP1="/tmp/raw-sar-output.txt$$"
TEMP2="/tmp/sorted-sar-output.txt$$"
CONT=0
sar -d 30 4 > $TEMP1
AVG_START=`awk '/^Average/ {print NR}' $TEMP1`
TOT_LINES=`cat $TEMP1 |wc -l`
TAIL_LINES=`expr $TOT_LINES - $AVG_START`
tail -$TAIL_LINES $TEMP1 | awk '{ print $5,$2 }' | sort -k 1n,1 > $TEMP2
if [ -s "$TEMP2" ]
then
   while read file;
   do
      IO=`echo $file | awk '{ print $1 }'`
      TMP_VAL=`echo $file | awk '{ print $1 }'`
      CONT=`expr $CONT + $TMP_VAL`
   echo CONT = $CONT
   done < $TEMP2
   #Echo Result
   echo $CONT
else
   rm -f $TEMP1 $TEMP2 2>/dev/null
   exit 1
fi
rm -f $TEMP1 $TEMP2 2>/dev/null
exit 0

Even though I am not piping to while, the final
Code:
echo $CONT

returns zero.

The same code with Korn shell works perfectly but for some reason the execution is too slow and causes problems to the use I need it for. So I definately need to use Bash or something equally fast...

Please help!
This User Gave Thanks to haaru For This Post:
drbiloukos
 

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LEARN ABOUT DEBIAN

runit-init

runit-init(8)						      System Manager's Manual						     runit-init(8)

NAME

       init - a UNIX process no 1

SYNOPSIS

       init [ 0 | 6 ]

DESCRIPTION

       runit-init is the first process the kernel starts.  If runit-init is started as process no 1, it runs and replaces itself with runit(8).

       If runit-init is started while the system is up, it must be either called as init 0 or init 6:

       init 0 tells  the  Unix	process  no 1 to shutdown and halt the system.	To signal runit(8) the system halt request, runit-init removes all
	      permissions of the file /etc/runit/reboot (chmod 0), and sets the execute by owner permission of the file  /etc/runit/stopit  (chmod
	      100).  Then a CONT signal is sent to runit(8).

       init 6 tells  the  Unix	process no 1 to shutdown and reboot the system.  To signal runit(8) the system reboot request, runit-init sets the
	      execute by owner permission of the files /etc/runit/reboot and /etc/runit/stopit	(chmod	100).  Then  a	CONT  signal  is  sent	to
	      runit(8).

EXIT CODES

       runit-init returns 111 on error, 0 in all other cases.

SEE ALSO

       runit(8), runsvdir(8), runsvchdir(8), sv(8), runsv(8), chpst(8), utmpset(8), svlogd(8)

       http://smarden.org/runit/

AUTHOR

       Gerrit Pape <pape@smarden.org>

																     runit-init(8)
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