Reading in data sets into arrays from an input file.

sidamin810 · #1 (**permalink**) 07-05-2005

Hye all,

I would like some help with reading in a file in which the data is seperated by commas. for instance:

input.dat:
1,2,34,/test

for the above case, the fn. will store the values into an array -> data[] as follows:

data[0] = 1
data[1] = 2
data[2] = 34
data[3] = /test

I am trying to write this fn. but dont know how to look for a comma so that the next data can be read in. Any help will be appreciated. Thanks in advance.

sssow · #2 (**permalink**) 07-05-2005

use perl split

dangral · #3 (**permalink**) 07-05-2005

What language are you writing the script in?

vgersh99 · #4 (**permalink**) 07-05-2005

Code:

#!/bin/ksh

file='/tmp/sid.txt'
typeset -i i=0

while read input
do
  IFS=,; set -A arr ${input}
  while (( i < ${#arr[@]} ))
  do
    echo "arr[$i]=${arr[$i]}"
    ((i+=1))
  done
  ((i=0))
done < "${file}"

Ygor · #5 (**permalink**) 07-05-2005

ksh

Code:

oldIFS=$IFS
IFS=,
set -A data $(<input.dat)
IFS=$oldIFS

sidamin810 · #6 (**permalink**) 07-06-2005

Thanks for the input..!

I am sorry I didn't mention this earlier, but I am using ksh. I am going to try this out with what I am working on.

Once again, thanks a lot for all the input. Goodday!

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
Arrays & File Reading	Asylus	Shell Programming and Scripting	1	12-17-2007 09:15 PM
Help reading an input file in KSH	zilla30066	Shell Programming and Scripting	2	02-01-2007 06:45 AM
Using loop reading a file,retrieving data from data base.	Sonu4lov	Shell Programming and Scripting	1	01-19-2007 03:38 AM
Script for reading an input file	gzs553	Shell Programming and Scripting	1	10-17-2006 06:55 AM
Reading Input from File and Duplicates Output	noelcantona	Shell Programming and Scripting	6	10-18-2005 04:59 AM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by