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Thank you so much guys. It's really helped me.

Hi Vgerh99,

It works perfect. How to copy these results into the same file?


awk -F'|' 'BEGIN{m="XXXXXXXXXXXXX"} {l=length($11);$11=substr(m,1,l-4) substr($11,l-3)}1' OFS='|'...

Hello MadeinGermany,

How to pass the below file to your script and then updated with masking value in 11th column in the file?

File Name: Sample.txt...

I know how to do it in Oracle (like below), however client need in shell script.
select length('520114025017'),
'520114025017' bank_account_number,
...

Hello Unix Guru's,

I need help in the masking Bank Account Number except last 4 digits in the file using either unix command or shell script.

I'm greatly appreciate your help.

File Name:...