How to delete one line from a text file

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# 1  
Old 01-29-2010
How to delete one line from a text file

sed "/$PATTERN/d" $file

In the file data is stored as

I need to delete only the line containing the PATTERN [cde]

pls help to point out why the above code is not working

Last edited by Yogesh Sawant; 02-26-2010 at 02:30 PM.. Reason: added code tags
# 2  
Old 01-29-2010

or use:
fgrep -v "$PATTERN" "$file"

# 3  
Old 02-24-2010
Dear Friend,

If you want to affect the file, in the "sed" script you should use -i option while execute the command.

consider the following contents are there in the file

sed -i '/cde/d'  file

Now the file is contains only the following contents

# 4  
Old 02-24-2010

grep -v "$var" infile > newfile


sed -i.bak "/$var/d" infile

this fixes the file in place producing a backup file by name infile.bak

# 5  
Old 02-24-2010
U can also use :

grep -v "cde" filename
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