Hi,
How do I go about deleting a line in a text file. I have used grep to find a particlular word, now how do I delete the line?

so far I got:

grep -i $keyword file.txt

Did you use the search within this forum ?

Please do so. The rules of the forum says

(5) Search the forums database with your keywords before asking.

Vino

sorry about that, wont happen again.

so if I use:

sed -e '/$keyword/d' file.txt

would that delete a user entered $keyword from a text file?

When you do that, you will not see lines containing the $keyword on the terminal. But that wouldnt delete the keyword from the file. Because you are not redirecting the output to a file.

If you need the change to be permanent, then use

If the keyword contains spaces and special characteres, you need to put the -e script within double quotes.

Vino

cheers vino, thanks for your help.

I hate to bring up a dead topic but its really relavant to what I need

I need to compare 2 files and output what is the same between the 2 into a 3rd file

old.txt = abc def ghi
new.txt = abc ghi jkl
final.txt = abc ghi

Here is what I have.. Not sure why it won't work. Is it because my diff doesn't get just "jkl def"