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Top Forums Shell Programming and Scripting checking variables + arithmetic operator help Post 302578520 by agama on Thursday 1st of December 2011 08:29:19 PM
Old 12-01-2011
The variable $* expands to each parameter from the command line. You want $# which is the number of parameters.

As for you example code, you don't need the echo nor the back ticks:

Code:
total=0
n=$#
while [[ -n $1 ]]
do
   total=$(( total + $1 ))
   shift
done
echo "total=$total  average=$(($total/$n))"

Bash cannot do floating point, but kshell can, so you can change the last line to the following if you want to use kshell and have a more percise average:

Code:
echo "total=$total  average=$(($total/$n.0))"

 

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INSTALLSIEVE(1) 					      General Commands Manual						   INSTALLSIEVE(1)

 *

NAME
installsieve - user utility for managing sieve scripts SYNOPSIS
installsieve DESCRIPTION
installsieve is a utility that allows users to manage their sieve scripts kept on the server. OPTIONS
-v <name> View script with the given name. The script if retrieved sucessfully is output to standard output. -l List all of the scripts currently on the server. If one of the scripts is active a arrow is printed indicating that it is the active script. -p <port> Port to connect to. If left off this defaults to "sieve" as defined in /etc/services. -i <file> Install a file onto the server. If a script with the same name already exists on the server it is overwritten. Upon sucessfully putting the script on the server the script is set active. If <file> has the extension .script it is chopped when put on the server since sieve names may not contain a '.'. -a <name> Set <name> as the active script. The list of available names can be obtained from the '-l' option.. -d <name> Delete the sieve script on the server with <name>. -m <mechanism> Force installsieve to use <mechanism> for authentication. If not specified the strongest authentication mechanism is chosen. -g <name> Get the sieve script with <name> and save it to disk with a ".script" extension. If a file with that name already exists it is overwritten. -u <user> Userid/Authname to use for authentication; by default, the current user. CMU
Project Cyrus INSTALLSIEVE(1)
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