Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

How best to correlate the variables in two arrays?

Posted on 2015-01-06
6
86 Views
Last Modified: 2015-01-07
I want to correlate the variables in two arrays.  What's the simplest way of doing this?  I presume using index?  I'd also like to confirm that they both contain the same quantity of elements.

E.g. for below 10.10.12.16 correlates to 04 etc.

STORAGE=(10.10.12.16 10.10.12.20 10.10.12.22)
LVM=(04 07 08)

for i in ${STORAGE[@]}
do
echo $i >> file.txt
echo CORRESPONDING_LVM_VALUE >> file.txt
done
0
Comment
Question by:mickt
  • 3
  • 3
6 Comments
 
LVL 68

Accepted Solution

by:
woolmilkporc earned 500 total points
ID: 40533355
Yes, use an index:

#!/bin/bash
STORAGE=(10.10.12.16 10.10.12.20 10.10.12.22)
LVM=(04 07 08)

if [[ ${#STORAGE[@]} -ne ${#LVM[@]} ]]; then
 echo "Number of elements doesn't match"
 exit
fi

n=0
while [[ n -lt ${#STORAGE[@]} ]]
 do
  echo ${STORAGE[n]} >> file.txt
  echo ${LVM[n]} >> file.txt
  ((n++))
 done
0
 

Author Comment

by:mickt
ID: 40533384
Cheers

And the 2nd part of question similar to the following:

if [ ${#STORAGE[@]} != ${#LVM[@]} ]
  then
    echo "STORAGE and LVM arrays do not contain the same quantity of elements.  Exiting."
    exit 1

fi
0
 

Author Comment

by:mickt
ID: 40533390
Sorry, missed your first section :).  cheers again.
0
Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
LVL 68

Expert Comment

by:woolmilkporc
ID: 40533410
Why grade B? Did you find my solution incomplete?
0
 

Author Comment

by:mickt
ID: 40533414
Not at all, very good solution.  Wasn't paying attention.  Can I change it?
0
 
LVL 68

Expert Comment

by:woolmilkporc
ID: 40533434
Click "Request Attention" and ask the mods to reopen the question.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Using Powershell to monitor file changes then execute a command 5 362
EXCHANGE 2007, SCRIPTS 67 81
Unix Script: Loop over all days of a month 17 104
AD Cleanup by EmployeeID 11 61
This Windows batch file is useful for organizing image files from a digital camera or other source, but can have many other uses.  It simply renames the file(s) to match their create date.  For example, if you took a picture today at 1:40pm and the …
The following is a collection of cases for strange behaviour when using advanced techniques in DOS batch files. You should have some basic experience in batch "programming", as I'm assuming some knowledge and not further explain the basics. For some…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

789 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question