help with numbering a file


 
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# 1  
Old 12-30-2010
help with numbering a file

Hi,

All I need to do is number a file.

The file looks like this

Code:
>
JJJJJJJJJJJJJJJJJJJJJ
>
JKJKJKKKKKKJJJ
>
MMMMYKKKJKKK

what I want to do is number it so that theres a numerical value beside the >.


Code:
>1
JJJJJJJJJJJJJJJJJJJJJ
>2
JKJKJKKKKKKJJJ
>3
MMMMYKKKJKKK

There are about 600 so I cannot do it manually.

thanks
# 2  
Old 12-30-2010
try this,

Code:
awk '{if(/^>$/){print ">"++i}else{print}}' inputfile

# 3  
Old 12-30-2010
another awk solution..
Code:
awk '{print $1 ~/>/?">"++i:$0}' inputfile > outfile

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