replacing all 4 first upper char of every rec to lowercase ?

Browser_ice · #1 (**permalink**) 08-02-2006

I have a file where some records have been updated the wrong way and need to fix it quickly since the amount can be alot.

Every record where any of the first 4 characters are in upper case need to be changed to lowercase.

Records can have '#' in position-1 for comments. These musn't be changed.

How do I do it with VI ?

If not with VI, with what and how ?

Browser_ice · #2 (**permalink**) 08-02-2006

can you move this thread to the right place ?

it got posted in the wrong place by mistake

tmarikle · #3 (**permalink**) 08-02-2006

Gosh, I'm not sure if this can be done in vi but here's how to do it via awk:

Code:

nawk '{
    sub(/^[A-Z][A-Z][A-Z][A-Z]/, tolower(substr($0,1,4)) substr($0,5),$0)
} 1' yourfile > newfile

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