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Inserting a String in a file header.

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# 1  
Old 05-14-2008
Inserting a String in a file header.
Dear all,

I have a file created in the name sample.txt in UNIX with header and footer. How to insert a required string (for example "FILE1") in the header part after the file has been created. What kind of command can i use to do the same.

Thanks in advance
Hari
# 2  
Old 05-14-2008
man sed
Code:
sed '1 s/$/FILE1\n/' file

# 3  
Old 05-14-2008
Can we include spaces in that sed command??

Thanks
hari
# 4  
Old 05-14-2008
Try it, and be amazed.
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