Shell Scripting For loop Syntax Error

Question

I am trying to make a simple shell script to ping a source but I am getting

bash-2.03$ ./test.sh google.com 10 .5 /home/users/me 16 256
./test.sh: line 35: syntax error near unexpected token `(('
./test.sh: line 35: `for (( i = 1 ; i <= $totalArguments ; i++ ))'

This is the code:

#!/bin/bash

ip=$1
count=$2
interval=$3
outputDirectory=$4
shift;
shift;
shift;
shift;
totalArguments=$#

for (( i = 1 ; i <= $totalArguments ; i++ ))
do 
    ping -c $count -i $interval -s ${!i} $ip >> $outputDirectory/${!i}results.txt
done

Can someone tell me what I am doing wrong with the for loop syntax? Thanks!

the for loop syntax looks fine.

Inv3r53
– Inv3r53

2010-06-08 17:31:34 +00:00
Commented Jun 8, 2010 at 17:31 — Inv3r53
– Inv3r53, Commented Jun 8, 2010 at 17:31
Script works as is for me on bash version 3.2.49.

Amardeep AC9MF
– Amardeep AC9MF

2010-06-08 17:34:40 +00:00
Commented Jun 8, 2010 at 17:34 — Amardeep AC9MF
– Amardeep AC9MF, Commented Jun 8, 2010 at 17:34

Dennis Williamson · Accepted Answer · 2010-06-08 18:42:37Z

5

According to the CHANGES file, that style of for loop was added in Bash 2.04.

You will need to use seq:

for i in $(seq $totalArguments)

answered Jun 8, 2010 at 18:42

Dennis Williamson

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