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Sed command to get first occurence of a line in a file

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Top Forums Shell Programming and Scripting Sed command to get first occurence of a line in a file
# 1  
Old 12-07-2011
Question Sed command to get first occurence of a line in a file
Hi,

I need a help in replacing the first occurrence of blank line with data.

I used the following command, but its replacing all de occurrences of blank lines in de file. Is there any other method to replace the first occurrence of blank line?
Code:
Sed /^$/data

O


Moderator's Comments:
Mod Comment Please use code tags!
Last edited by zaxxon; 12-07-2011 at 06:19 AM.. Reason: code tags, see PM
# 2  
Old 12-07-2011
"replacing the first occurrence of blank line with data" - Please elaborate.
# 3  
Old 12-07-2011
sed command to get the first occurrence of a blank line
oh i'm sorry... The command i use is
Code:
sed -e 's/^$/data'

This is replacing every blank line. I was trying to replace only the first occurence of a blank line in the file, with data..
Last edited by Franklin52; 12-07-2011 at 07:50 AM.. Reason: Please use code tags for code and data samples, thank you
# 4  
Old 12-07-2011
try this
Code:
sed -e '1,/^$/ s/^$/data/' file

# 5  
Old 12-07-2011
No this code is not working... Its showing error as the above mentioned code cannot be parsed...

Is there any space between 1/^$/ and s/^$!/
# 6  
Old 12-07-2011
Please post the test data,then only we can give the solution.
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