I'm trying to use sed, but like many before me my brain is melting.
Could someone tell me how I can get sed to do a global substitution function where it will substitute data from elsewhere in the stream.
i.e. there's a date at the top of the file (sic) 10-Feb-09 and I want that inserted at the begining of each line excluding the first 16 lines so...
sed '1,16!s/^/????/g'
where ???? = the expression I don't know
Can I refer to it by pattern or line or similar?
Could someone tell me how I can get sed to do a global substitution function where it will substitute data from elsewhere in the stream.
i.e. there's a date at the top of the file (sic) 10-Feb-09 and I want that inserted at the begining of each line excluding the first 16 lines so...
sed '1,16!s/^/????/g'
where ???? = the expression I don't know
Can I refer to it by pattern or line or similar?