Hi,

I have a perl script that takes in 2 numerical values as ARGV[].

perl script.pl parameter1 num1 num2

Depending on what these input files look like, it may be as simple as

cat filename1 filename2 filename3 | xargs -n 2 perl script.pl parameter1

How do I change the above command when I put the 2 numerical values in one file (separated by tab) ( I have 1000's of values (lines) in that file) and I want to direct the output file (1000 files) using '>'.

example of my tab delimited parameter file is

38215   41324
41361   41664
41696   42207
42230   42404
42406   42514

If each line needs a separate output file, then:

OUTPUT=1
while read A B
do
        OUTPUT_FILENAME=`printf "%04d" "$OUTPUT"`
        perl script.pl $A $B > ${OUTPUT_FILENAME}
done < inputfile

@Lucky Ali: If you're allowed to modify the perl program, you could open the tab delimited parameter file using a file-handle and read its contents inside from inside the program. That way, you wouldn't have to bother about writing a wrapper shell script.