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Forum: Shell Programming and Scripting 08-26-2013

Add a character C in a column if that column is blank

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Would sed be an option? Trysed -r 's/^(.{16})...

Would sed be an option? Trysed -r 's/^(.{16}) /\1C/' file

Forum: Shell Programming and Scripting 08-26-2013

Add a character C in a column if that column is blank

3,958

Posted By

I haven't seen anything yet saying what OS is...

I haven't seen anything yet saying what OS is being used here, but the following slightly simpler awk script may do what is wanted:
awk '{a=substr($0,17,1); a=(a!=" ")?a:"C"; print substr($0,1,16) a...

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