Perl - search and replace a particular field

Shell Programming and Scripting
1

Hi,

I have a file having around 30 records. Each record has 5 fields delimited by PIPE. Few records in the file having Junk characters in the field2 and field4.

I found the junk charcter and I tested it and replace the junk with space with the command below

perl -i -p -e "s/\x00/ /g" <myfile>.

My requirement is I want to replace the Junks in the 2nd field only and should not replace junks in 4th field.

How to do this? Please help!!

Thanks,
Ramkrix

2

If you want to match the first occurence, remove the g modifier.

perl -i -p -e "s/\x00/ /" <myfile>

BTW, how do your junks look like?