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Full Discussion: Help with Global Variable
Top Forums Shell Programming and Scripting Help with Global Variable Post 302342991 by aigles on Tuesday 11th of August 2009 08:43:18 AM
Old 08-11-2009
You can store the value in a file, for example :
Code:
ErrorFile=./error_count
if [ -e $ErrorFile ]
then
   last_error_count=$(<$ErrorFile)
else
   last_error_count=0
fi
. . . .
error_count=10
. . . .
(( new_error_count=last_error_count+error_count ))
If EndOfDay 
then
   echo Total error count for the day : $new_error_count
   echo 0 > $ErrorFile
else
   echo $new_error_count > $ErrorFile
fi

Jean-Pierre.
 

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LEARN ABOUT LINUX

motd.tail

MOTD.TAIL(5)						   Debian Administrator's Manual					      MOTD.TAIL(5)

NAME

       motd.tail - Template for building the system message of the day

DESCRIPTION

       On Debian systems, the system message of the day is rebuilt at each startup, in order to display an accurate information. /etc/motd.tail is
       the file to edit permanent changes to the message of the day.

OVERVIEW

       The initiation script /etc/init.d/bootmisc.sh prepends a line containing information about the system  to  /etc/motd.tail  and  stores  the
       resulting  file in /var/run/motd. /etc/motd is a symbolic link to /var/run/motd.  This is done to prevent changes to /etc as the system can
       not assume /etc to be writable.

       Changes to /etc/motd effectively end up in a file under /var/run which will be regenerated upon reboot.

       A symbolic link to a different file, such as /etc/motd.static disables this behaviour.

FILES

       /etc/init.d/bootmisc.sh
	      The initiation script which builds /var/run/motd

       /etc/motd
	      Symbolic link to the system message of the day at /var/run/motd

       /etc/motd.tail
	      Template for building the system message of the day

       /var/run/motd
	      System message of the day file rebuilt at each computer start

SEE ALSO

       login(1), issue(5), motd(5).

Debian								    2007-04-28							      MOTD.TAIL(5)
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