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Old 06-22-2007
mani_um mani_um is offline
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Join Date: Mar 2007
Posts: 30
How can i replace certain columns in the file

Can i use sed command to replace certain column in the file

let say i hav

D1254215221542 MANA3DS2OOR454
C1254815221121 MDGA4GH4OOR454
A1254215221522 AFFA4DF4OODS54
S3454815221121 TDTA4GH465R454

I wanted to change only at postition 21 and 22 which is DS,GH,DF and GH
i want find that if that position is GH then change it to KH
so the output should be

D1254215221542 MANA3DS2OOR454
C1254815221121 MDGA4KH4OOR454
A1254215221522 AFFA4DF4OODS54
S3454815221121 TDTA4KH465R454

can i do in in sed command or any other simple command if you have
thanks
 

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