CODEWITHSUNDEEP
bashtextsed
user1899415
user1899415

Reputation: 3135

Delete line containing one of multiple strings

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?

Upvotes: 10

Views: 15587

Answers (4)

Raman Kathpalia
Raman Kathpalia

Reputation: 181

Multiple string removal using grep

grep -vE "facebook|youtube|google|amazon|dropbox" file.txt > filtered.txt

For case-insensitive string removal using grep

grep -viE "facebook|youtube|google|amazon|dropbox" file.txt > filtered_case_insensitive.txt

Upvotes: 0

gpojd
gpojd

Reputation: 23085

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.

Upvotes: 17

jaypal singh
jaypal singh

Reputation: 77185

With awk

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

Upvotes: 6

glenn jackman
glenn jackman

Reputation: 247220

grep -vf wordsToExcludeFile myfile.txt

"wordsToExcludeFile" should contain the words you don't want, one per line.

If you need to save the result back to the same file, then add this to the command:

 > myfile.new && mv myfile.new myfile.txt

Upvotes: 9

Related Questions