parsing comma separated file

Shell Programming and Scripting
1

Hi,

I have a file with th elist of patches separated by comma, like below:
patch1, patch 2, patch 3................

t\The number of patches is not known as it changes every time.

I need assistance in writing a routine such as it will take patch1 as first variable and performs the installation, then reads the file again takes patch2 as value and perform installation.

I have a shell script which perform the installation but i pass one value at a time. i want to run it in a single shot.

Thanks for all th ehelp in advance.

2

Try:

( IFS=,
  while read line
  do 
    for i in $line
    do 
      install "$i"
    done
  done
) < infile
3

thanks!!!!!

here's my sript:

#!/bin/bash
INPUT=/tmp/patch_list.txt
( IFS=,
  while read PATCHES
  do
    for i in $PATCHES
    do
      echo $PATCHES
    done
  done
) < $INPUT

patch_list.txt has following values:

SW06859140F110.1039274,SW06859140F110.1039276,SW06859140F110.1039289

when i run the routine it removes the comma and gives all the patches mlike below:

SW06859140F110.1039274 SW06859140F110.1039276 SW06859140F110.1039289

what i am looking for is one value at a time, some thing like below:

SW06859140F110.1039274
SW06859140F110.1039276
SW06859140F110.1039289

thanks for all the help in advance.

4 
awk -F, '{for(i=1;i<=NF;i++) a[++j]=$i;next;}END{for(i=1;i<=j;i++) print a;}' $INPUT | while read PATCHES
do
echo $PATCHES
done
5

Replace: echo $PATCHES with echo "$i"