Remove everything after the first / including the first / for each line

Question

I have a file with lots of host names. Some have a url part after the host that I\'d like to remove. In other words:

google.com
facebook.com
acme.com/news/frontp         


        

Answer 1

Try doing this :

cut -d '/' -f1 file.txt

or

awk -F/ '{print $1}' file.txt

or

perl -F/ -lane 'print $F[0]' file.txt