Sponsored Content
Full Discussion: Comparing Variables in Perl
Top Forums Shell Programming and Scripting Comparing Variables in Perl Post 302237797 by avronius on Thursday 18th of September 2008 11:26:24 AM
Old 09-18-2008
If you wanted to loop through each element in an array to do a one-to-one evaluation for each element pair in an array, you can:

Code:
$elementCount = @a;
$count = 0;

while ( $count < $elementCount )
{
   if ( $a[$count] == $b[$count] )
   {
      print "\$a[$count]: $a[$count] = \$b[$count]: $b[$count]\n";
   }
   $count++;
}

(remember to use eq instead of == if you are working with text)

EDIT: changed line in red
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

comparing variables

I have searched and found a few threads that have dealt with this, but the examples I've tried haven't seemed to help. I am monitoring our database log for high checkpoints. I can parse out the checkpoint value which can be anywhere from zero into a 3 digit number. I set a variable to be the... (3 Replies)
Discussion started by: MizzGail
3 Replies

2. Shell Programming and Scripting

Comparing two variables

Script #!/bin/sh hardware=PC os=WindowsNET for i in `cat newservers` do x=`sudo /opt/openv/netbackup/bin/admincmd/bpplclients |grep $i |head -40 |grep $i|awk '{print $3;exit}'` if then echo "$i is already added" else echo "Need to add" fi done O/p in debug mode bash-2.05$... (3 Replies)
Discussion started by: rajip23
3 Replies

3. UNIX for Dummies Questions & Answers

comparing variables

im trying to compare ipaddresses. i loop through an array to see if the ip is already is in the array and if it is it should set a flag and then i wont add it to the array. but its just adding all the ipaddresses to the array if ] then ... (3 Replies)
Discussion started by: magnia
3 Replies

4. Shell Programming and Scripting

Comparing variables in awk

I'm writing a shellscript that monitors the price of a watch. If the prices changes, it should email me. The body of the email will show the old price and the new price. However when I compare the two awk variables(oldprice and newprice) it always says they're not the same. The shellscript goes out... (2 Replies)
Discussion started by: Shinsuio
2 Replies

5. Shell Programming and Scripting

Comparing multiple variables

Hi! I've come up with a ksh-script that produces one or more lists of hosts. At the and of the script, I would like to print only those hosts that exists in all the lists. Ex. HOSTS="host1 host2 host3 host11" HOSTS="host1 host2 host4" HOSTS="host2 host11" HOSTS="host2 host5 host6 host7... (1 Reply)
Discussion started by: Bugenhagen
1 Replies

6. Shell Programming and Scripting

comparing multiple variables by 'if then'

Hi, I am a noob at shell scripting. basically I am trying to compare row counts from 8 tables in different databases. I have managed to get the row counts using awk from the spool files for both databases. now I have 16 variables with me for database 1 : $A $B $C $D $E $F $G... (3 Replies)
Discussion started by: smallville
3 Replies

7. UNIX for Dummies Questions & Answers

Comparing the characters of 2 variables

hi i am writing a hangman script and am having trouble checking the correct letters against the word i need the script to compare the word against the letters guessed that are correct so once all the letters within the word have been guessed it will alow me to create a wining senario eg ... (13 Replies)
Discussion started by: lsecer
13 Replies

8. Shell Programming and Scripting

comparing variables in an if statement

#!/bin/bash #timetest TIMENOW="$(date)" T1=12:00:00 echo $TIMENOW >timenow cat timenow |cut -f4 -d' ' >time1 T2=$(sed -n "${1}p" time1) echo "T1 = " $T1 echo "T2 = " $T2 if then echo $T1 else echo $T2 fi I thought scripting was simple! So why does this script result in: T1 =... (4 Replies)
Discussion started by: habuchas
4 Replies

9. Shell Programming and Scripting

awk comparing variables

Is there a way to compare variables in a 'awk'? I've been trying for a while and can't figure it out. I'm guessing its not possible :/ VAR=Bob awk '$3 == $VAR { print $1 }' file.txt Regards Jikuu (4 Replies)
Discussion started by: Jikuu
4 Replies

10. Shell Programming and Scripting

Comparing two variables

I have a script like this. Just couldn't get the comparison part work. Any thought? thanks, #!/usr/bin/ksh -x STEP=`echo $(basename $0 .ksh) | tr "" ""` log=/skip.log while read LINE do if then echo `date`: STEP $STEP skipped by user >> $log exit 0 fi done < $1 echo... (0 Replies)
Discussion started by: ghostmic
0 Replies
queue(n)							Tcl Data Structures							  queue(n)

NAME
queue - Create and manipulate queue objects SYNOPSIS
package require Tcl 8.2 package require struct ?1.2.1? queueName option ?arg arg ...? queueName clear queueName destroy queueName get ?count? queueName peek ?count? queueName put item ?item ...? queueName size DESCRIPTION
The ::struct::queue command creates a new queue object with an associated global Tcl command whose name is queueName. This command may be used to invoke various operations on the queue. It has the following general form: queueName option ?arg arg ...? Option and the args determine the exact behavior of the command. The following commands are possible for queue objects: queueName clear Remove all items from the queue. queueName destroy Destroy the queue, including its storage space and associated command. queueName get ?count? Return the front count items of the queue and remove them from the queue. If count is not specified, it defaults to 1. If count is 1, the result is a simple string; otherwise, it is a list. If specified, count must be greater than or equal to 1. If there are no items in the queue, this command will return count empty strings. queueName peek ?count? Return the front count items of the queue, without removing them from the queue. If count is not specified, it defaults to 1. If count is 1, the result is a simple string; otherwise, it is a list. If specified, count must be greater than or equal to 1. If there are no items in the queue, this command will return count empty strings. queueName put item ?item ...? Put the item or items specified into the queue. If more than one item is given, they will be added in the order they are listed. queueName size Return the number of items in the queue. KEYWORDS
stack, matrix, tree, graph struct 1.2.1 queue(n)
All times are GMT -4. The time now is 01:20 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy