keep getting : not found

[lovepony]

#!/bin/sh
# Latency menu 

while [ answer != "0" ] 
do
clear
echo "----------------------------------------"
echo "***     Lacency configuration        ***"
echo "----------------------------------------"
echo "Select a number and press Enter"
echo "  1  Set user defined Latency"


read -p " ?" answer
    case $answer in
        0) break ;;
        1)echo "Indtast din onskede latency" 
	  read user_latency
	   echo "Du skrev $user_latency"
	   my2="2"
	   echo "$my2"
	   test= `expr $user_latency / $my2`
	   echo "$test"
	   
	   ipfw pipe 1 config delay $test

 

[lovepony]

can't figure out how to edit my tread so here are some more info

I'm starting to build my first sh script and I'm running into some problems , my only scripting / programming experience is from windows.

This is kinda working but i keep getting : not found in my echo "$test" , it does the calculation but it adds : not found. so a print would look like 500:not found

 

[lovepony]

Figured it out my self , was a syntax error.

changed

test= `expr $user_latency / $my2`

to

test=`expr $user_latency / $my2`

thanks anyway for a great forum

 

[camelia]

There is builtin arithmetic parser, i.e. $((...)). It's supported by all ash descendants as well as bash/zsh.

$ user_latency=10
$ my2=2
$ echo $(( user_latency / my2 ))
5

 

[camelia]

In other words this

	   echo "Du skrev $user_latency"
	   my2="2"
	   echo "$my2"
	   test= `expr $user_latency / $my2`
	   echo "$test"

can be reduced to

echo "Du skrev $user_latency"
echo $(( my2 = 2 ))
echo $(( test = user_latency / my2 ))