Tech-Recipes - Latest Comments in Remove blank lines from a file using grep | UNIX | Tech-Recipes

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

bryansenter — Wed, 19 Aug 2009 11:44:37 -0000

Include blank lines that aren't really blank (tabs, spaces, CRLF, etc)

grep -vc '^[[:space:]]*$'

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

sivapitchai — Fri, 07 Aug 2009 18:22:49 -0000

Have you tried the above commans...?

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

Luis — Fri, 13 Mar 2009 16:46:04 -0000

awsome

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

Jadu Saikia — Wed, 07 Jan 2009 06:01:31 -0000

All ways together, :-)

$ grep -v '^$' file
$ grep '.' file
$ sed '/^$/d' file
$ sed -n '/^$/!p' file
$ awk NF file
$ awk '/./' file

unstableme.blogspot.com

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

Anonymous — Sun, 22 Jun 2008 23:55:49 -0000

The easiest way to remove blank lines from a file is to use a sed statement. The following syntax removes the blank lines.

# cat my_file | sed /^$/d

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

Anonymous — Tue, 22 Jan 2008 22:17:56 -0000

This wasn't working for me using Cygwin, then I realised that the file I was looking at had Windows line endings. There are any number of solutions to this, but the one I chose was to pipe through tr -d "r" before piping through grep. Then it worked like a charm. -- Richie Hindle, richie@entrian.com

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

Anonymous — Fri, 03 Sep 2004 00:08:08 -0000

.. or, quicker, grep . <filename>

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

raxxal — Thu, 13 May 2004 08:02:13 -0000

By the way, if you want to see the $ sign, in vi enter :set list
also, in cat do the following: cat -vet

Raxxal

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

qmchenry — Tue, 25 Nov 2003 01:31:59 -0000

Great catch! You are absolutely correct. The recipe has been repaired. Thank you for helping to improve Tech-Recipes.

Quinn

Re: Remove blank lines from a file using grep | UNIX | Tech-Recipes

Anonymous — Mon, 24 Nov 2003 22:33:49 -0000

From man grep:

<ul id="quote">The caret ^ and the dollar sign $ are metacharacters that respectively
match the empty string at the beginning and end of a line.</ul>
Not "$=beginning of line, ^=end of line"