append blank space

Shell Programming and Scripting
1

Hi,

I would like to add blank space for fixed length(50) if length of string <30.

Scenario:

File			Size
AAA.CSV          	123
BB.CSV          134

Expected:
File Size
AAA.CSV 123
BB.CSV 134

I want append blank space until 30 character.

Thanks and Regards,
HAA

2

Am not clear about which is fixed length here..Is it 50 or 30?
Anyway, you can format the file using awk like below...

awk -F" " '{printf "%30s 30%s\n",$1,$2}' filename