I can find the lines I am looking for by searching on 
but I then want to remove these lines! How can I do this easily?
Cheers,
Chris
position cursor on line, type in dd
to delete this line and the next 2dd
to delete the line and the next 3 type in 4dd
OK?
If you mess up type in p and the text just deleted will be “popped” back onto the screen sterting with the line after the one which the cursor is on
:firstline,lastlined
or use sed
Sorry I meant automatically; it’s a 14 million line file with about 7.7 million of these.
Then Kevin’s solution is the one for you.
To delete lines 13000 to 13750 for example:
To delete from start of file to current position:
To delete from current position to end of file:
bsed[/b] uses similar syntax but can run from a batch file, b man sed[/b] for details.
HTH
How about :1,$s/.*:
//g to find (and delete) lines ending with a :
Grep is your command line friend to remove that much stuff
to filter out the text
grep -v “<text to match>” file.name > new.file.name
the minus v is filter out. otherwise the default is to filter in.
Edit
egrep is your friend for complex filtering. It can contain complex logic for multiple conditions.