I have a log file on server called `writelog` which is about `2GB`.

I want to delete first `100,000` lines from the file. I could open the file and delete those lines but because of the file size it takes me forever to download it.

So, is it possible to do this from Linux terminal? If yes how?
['https://Stackoverflow.com/questions/12302290', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1143828/']
If you want to clear out the *whole file* a quick way is   

`cat /dev/null > writelog`

See also [this thread on unix.com](http://www.unix.com/unix-dummies-questions-answers/150082-create-empty-file-overwrite-file-differences-between-cat-echo-etc.html).
If you are running a Linux server, you can use `ssh`:

```
ssh username@mydomain.com sed -i '1,100000d' /path/to/logfile

```