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Deleting "user input line number" from a file using sed

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# 1  
Old 04-12-2012
Deleting "user input line number" from a file using sed
Hi


I want to delete a line from a txt file for which the line number is user input. Say when user selects 19, the 19th line would be deleted from the file. Can anyone please provide me with a sed one liner for the same... I tried sed -i. The interaction would be like this


Enter the line to be deleted: 19


Record deleted from file.


I am facing problem in fixing user inpuit in a variable to sed -i


Thanks,
Sudeep
# 2  
Old 04-12-2012
Code:
sed "$linenumber"d infile > outfile

# 3  
Old 04-12-2012
Thanks shailesh

But the problem is that the file is very huge and xtra space consumption for a temp file is to be avoided even for creating any sort of swap in real time. Can it be done without making a temporary file

Regards,
Sudeep

Quote:
Originally Posted by 47shailesh
Code:
sed "$linenumber"d infile > outfile

# 4  
Old 04-12-2012
Quote:
Originally Posted by sudeep.id
I tried sed -i.
What does your code look like?

Also, what sed are you using?
# 5  
Old 09-11-2012
Try This
I know this is a late response but I believe this will work:
Code:
sed -i /"$1"/d filename

Last edited by Franklin52; 09-12-2012 at 03:34 AM.. Reason: Please use code tags for data and code samples
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