Remove blank lines from a file

grep -v "^$" file
To save the result, redirect the output to another file. grep -v "^$" file1 > file2

By: hkyeakley
2009-02-19 18:11:58

What Others Think

sed -i '/^$/d' file will make the change in place.
iqag · 691 weeks and 2 days ago
cat -s file1 > file2 remove repeated empty output lines (if you have 2 or more empty lines, 'cat' remove them, otherwise 'cat' don't).
n0ky75 · 691 weeks and 2 days ago
grep . $file
kst · 691 weeks and 2 days ago
This particular command is mainly used to remove blank lines from a specific file. The above commands show cbd oil that and it's good to see the details shared here. We can also expect more such commands from here. I am looking here for more updates and keep up the good work.
Alyssalauren · 44 weeks and 2 days ago
seofox · 26 weeks and 1 day ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

You must be signed in to comment.

What's this? is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.


Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: