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Delete empty lines using sed
... spaces or tabs in your "empty" line. Use POSIX classes with sed to remove all lines containing only whitespace:
sed '/^[[:space:]]*$/d'
A shorter version that uses ERE, for example with gnu sed:
sed -r '/^\s*$/d'
(Note that sed does NOT support PCRE.)
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Why am I getting ibtool failed with exit code 255?
All of a sudden I can't build my project. I get the following compiler error:
33 Answers
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Setting mime type for excel document
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edited Feb 22 at 1:46
Callum Watkins
2,22222 gold badges2323 silver badges4040 bronze badges
answered Dec 26 '09 at 19:44
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How to debug an apache virtual host configuration?
...d (Ubuntu)
apache2ctl -t
# MacOS
apachectl -t
List virtual hosts
To list all virtual hosts, and their locations:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -S
# Debian-based (Ubuntu)
apache2ctl -S
# MacOS
apachectl -S
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Redis connection to 127.0.0.1:6379 failed - connect ECONNREFUSED
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After you install redis, type from terminal:
redis-server
and you'll have redis running
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Using HTML and Local Images Within UIWebView
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All this does for me is give me a string in my webview that I defined for my htmlString. i.e. all it shows on the page is "tour.html"
– Chewie The Chorkie
Feb 29 '12 at 17:11
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How do I do a 'git status' so it doesn't display untracked files without using .gitignore?
...mand-line operation; not a git config file edit.
– Ross Rogers
Dec 4 '17 at 17:55
What if I have done, git reset --ha...
How to insert a text at the beginning of a file?
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To actually insert a new line: sed -i '1s/^/<added text> \n/' file
– jslatts
Sep 17 '13 at 13:27
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How can I get Eclipse to show .* files?
... it somehow possible to only include the file named .gitignore but exclude all other files starting with .?
– Edward
Jan 8 '15 at 12:08
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How to fully delete a git repository created with init?
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Git keeps all of its files in the .git directory. Just remove that one and init again.
If you can't find it, it's because it is hidden.
In Windows 7, you need to go to your folder, click on Organize on the top left, then click on Fo...