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Full Discussion: Finding an average
Top Forums Shell Programming and Scripting Finding an average Post 302861005 by Don Cragun on Monday 7th of October 2013 10:41:07 PM
Old 10-07-2013
Of course I could. Depending on what shell you're using and what operating system you're using, the script you have is probably not only not working in some cases, but also very inefficient in the cases that are working. So, to provide you with a reasonable, working solution, how about answering some questions first:
  1. What shell are you using?
  2. If you aren't using the Korn shell, is it OK to use the Korn shell instead of the shell you're using?
  3. Do you have access to a 1993 or later version of ksh?
  4. What operating system are you using?
  5. What is the name of your file that contains one or more rows with more than one number in a row?
  6. What is the actual contents of the file that contains more than one number in one or more rows?
  7. What happens when you use set -xvf instead of set -f to trace the commands your script is running (so you can actually see the expr command that is failing)?
  8. Show us some sample invocations of your script, the contents of any files named in those sample invocations, and the output that you expect from each of those sample invocations!
 

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LEARN ABOUT REDHAT

tload

TLOAD(1)							Linux User's Manual							  TLOAD(1)

NAME

       tload - graphic representation of system load average

SYNOPSIS

       tload [-V] [-s scale] [ -d delay ] [tty]

DESCRIPTION

       tload prints a graph of the current system load average to the specified tty (or the tty of the tload process if none is specified).

   Options
       The -s scale option allows a vertical scale to be specified for the display (in characters between graph ticks); thus, a smaller value rep-
       resents a larger scale, and vice versa.

       The -d delay sets the delay between graph updates in seconds.

FILES

       /proc/loadavg load average information

SEE ALSO

       ps(1), top(1), uptime(1), w(1)

BUGS

       The -d delay option sets the time argument for an alarm(2); if -d 0 is specified, the alarm is set to 0, which will never send the  SIGALRM
       and update the display.

AUTHORS

       Branko Lankester, David Engel <david@ods.com>, and Michael K. Johnson <johnsonm@redhat.com>.

       Please send bug reports to <procps-list@redhat.com>

Cohesive Systems						   20 Mar 1993								  TLOAD(1)
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