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Delete a line from a file

 
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# 1  
Old 02-28-2007
Delete a line from a file
Hi,

Need to delete a line from a file, file is too large so cannot use vi.

I know the line number that has to be deleted...

How can this be done ?
# 2  
Old 02-28-2007
Quote:
Originally Posted by rohini
Hi,

Need to delete a line from a file, file is too large so cannot use vi.

I know the line number that has to be deleted...

How can this be done ?
sed <linenum>d file > file2
# 3  
Old 02-28-2007
sed 'linenumberd' filename > newfilename

e.g. to delete 5th line
sed '5d' filename > newfilename
# 4  
Old 01-06-2009
hi how do i delete a block of text from a text file within known line numbers. e.g. from line 43 to lint 58. between and including these kines, i want the block deleted.
# 5  
Old 01-07-2009
the sed command can be used to delete the specific lines in a file

sed '43,58d' infile > outfile

Smilie
# 6  
Old 01-07-2009
Line Deletion
Try this :

##--NOn interactive deletion of lines using vi- editor
vi - a.txt <<END
:11d
:12d
:x
END

##the above code will delete 11th and 42nd line , saves the file and exits

dump the above code in a script and execute it ...

you can also achive the same using sed but sed is a temporary one it wont make the changes permanent to the source file....
# 7  
Old 01-07-2009
Question
Quote:
Originally Posted by palanisvr
Try this :

##--NOn interactive deletion of lines using vi- editor
vi - a.txt <<END
:11d
:12d
:x
END

##the above code will delete 11th and 42nd line , saves the file and exits

dump the above code in a script and execute it ...

you can also achive the same using sed but sed is a temporary one it wont make the changes permanent to the source file....
thats fine. how do i do it in sed, i could pipe the changes into a new file. i prefer single line commands as i haven't mastered executing scripts yet.
 
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