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

Answer 2

One way:

sed 's|/.*||' file

Results:

google.com
facebook.com
acme.com
bbc.co.uk
abc.com

You may want to read more about using the slash as a delimiter. HTH.

Answer 3

awk -F/ '{print $1}' your_file

or

all the other solutions cannot change the file inplace.but in case of steve you need to add a -i flag for that sed solution.But still it will not work on solaris. below perl solutiopn works on all the platform and replaces the file inplace

perl -pi -e 's/\/.*//g' your_file