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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.
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List only hidden files (or directories). You also can use:
ls -lad .*
all files in the directory get moved, in doing so the new name of the file is the original name with out spaces (using translate command)
I wrote a script called bootstrap.py to delete the database, then load a new database with initial values. With this single-line shell loop, when I need to make a schema change (which happens often in the early stages of some projects), I hit ctrl-C to stop the running Django server, then watch bootstrap.py do its thing, then watch the server restart.
Just put this line in a file that resides in your /etc/cron.d/ folder, and you're set.
The -q option is used to suppress php headers.
You'll need to install sox and flac packages in Debian/Ubuntu.
Deletes thousands of files at one go, I'm not able to recall the exact # of files that rm can delete at one go(apprx. around 7000.)
plays with bash arrays. instead of storing the list of files in a temp file, this stores the list in ram, retrieves the last element in the array (the last html file), then removes it.
Strips comments from at least bash and php scripts. Normal # and // as well as php block comments
removes all of the:
lines beginning with #
lines beginning with //
lines beginning with /*
lines beginning with a space and then *
lines beginning with */
It also deletes the lines if there's whitespace before any of the above.
Add an alias to use in .bashrc like this:
alias stripcomments="sed -e '/^[[:blank:]]*#/d; s/[[:blank:]][[:blank:]]*#.*//' -e '/^$/d' -e '/^\/\/.*/d' -e '/^\/\*/d;/^ \* /d;/^ \*\//d'"
Change YOUR TEXT HERE to the text you want.
On figlet -f banner, you can change it to any figlet font you have installed.
One variant for Star Wars fans could be this:
while [ 1 ]; do clear; echo 'Star Wars' | figlet -f starwars -t | while IFS="\n" read l; do echo "$l"; sleep 0.01; done; done
NOTICE: You need to install figlet.
On Ubuntu, this command is:
sudo apt-get install figlet
On Debian, this command is:
aptitude install figlet
Displays SuSE release information
Like the http://www.commandlinefu.com/commands/view/6327/open-file-with-sudo-when-there-is-no-write-permission, but works (in zsh; my commandlinefu is not strong enough to understand why bash don't like it) with vim options, like -O, and many input files.
There could be other mistakes.
Usage: jd dir
Requires globstar. To set globstar use:
shopt -s globstar
Create a shortcut on your desktop and insert the above command.
since Mozai said that JSON is a subset of YAML ;)
I don't know if you've used sqsh before. But it has a handy feature that allows you to switch into vim to complete editing of whatever complicated SQL statement you are trying to run.
But I got to thinking -- why doesn't bash have that? Well, it does. It's called '|'!
Seriously, I'm pretty sure this flow of commands will revolutionize how I administer files. And b/c everything is a file on *nx based distros, well, it's handy.
First, if your ls is aliased to ls --color=auto, then create another alias in your .bashrc:
alias lsp='ls --color=none'
Now, let's say you want to rename all files that begin with the prefix 'ras' to files that begin with a 'raster' prefix.
You could do it with some bash substitution. But who remembers that? I remember vim macros because I can remember to press 'qa' and how to move around in vim. Plus, it's more incremental. You can check things along the way. That is the secret to development and probably the universe. So type something like:
lsp | grep ras
Are those all the files you need to move? If not, modify and re-grep. If so, pipe it to vim.
lsp | grep ras | vim -
Now run your vim macros to modify the first line. Assuming you use 'w' and 'b' to move around, etc., it should work for all lines. Hold down '@@', etc., until your list of files has been modified from
mv ras_a.h raster_a.h
mv ras_a.cpp raster_a.cpp
mv ras_b.h raster_b.h
mv ras_b.h raster_b.cpp
then run :%!bash
then run :q!
then be like, whaaaaa? as you realize your workflow got a little more continuous. maybe. YMMV.
Could use your ssh bash history if your known_hosts are hashed and you want to keep it hashed
Delete a user?s password (make it empty). This is a quick way to disable a password for an account. It will set the named account passwordless.
it recursively searches your project's directories and sum the lines of every source [.c or .h]. Then it gives you the total.