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SED replace string by occurrence

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# 1  
Old 03-05-2008
SED replace string by occurrence
hi all,
I have a text file with following content

PAGENUMBER
asasasa
asasasa
PAGENUMBER
sasasasasa
PAGENUMBER

using sed i want to replace PAGENUMBER by occurrence count

eg

1
asasasa
asasasa
2
sasasasasa
3


Thanks and Regards,
uttam hoode
# 2  
Old 03-05-2008
Quote:
Originally Posted by uttamhoode
hi all,
I have a text file with following content

PAGENUMBER
asasasa
asasasa
PAGENUMBER
sasasasasa
PAGENUMBER

using sed i want to replace PAGENUMBER by occurrence count

eg

1
asasasa
asasasa
2
sasasasasa
3


Thanks and Regards,
uttam hoode
why not use awk, try this:
cat $filename | awk '/PAGENUMBER/{count++; { sub("PAGENUMBER",count, $0)}; }; {print }'

A part of this command is taken from a similar post by lyoncc, thanks to lyoncc.
# 3  
Old 03-05-2008
Code:
awk '/PAGENUMBER/{print ++i;next}1' file

# 4  
Old 03-05-2008
how can i update the result in the same file? (inline edit)
# 5  
Old 03-05-2008
redirect to another file, rename it back to the original.
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