Delete line containing one of multiple strings

Question

I have a text file and I want to remove all lines containing the words: facebook, youtube, google, amazon, dropbox, etc.

I know to delete lines containing a string with sed:

sed '/facebook/d' myfile.txt

I don't want to run this command five different times though for each string, is there a way to combine all the strings into one command?

Answer 1

Try this:

sed '/facebook\|youtube\|google\|amazon\|dropbox/d' myfile.txt

From GNU's sed manual:

regexp1\|regexp2

Matches either regexp1 or regexp2. Use parentheses to use complex alternative regular expressions. The matching process tries each alternative in turn, from left to right, and the first one that succeeds is used. It is a GNU extension.

Answer 2

With awk

awk '!/facebook|youtube|google|amazon|dropbox/' myfile.txt > filtered.txt