This is better than doing a "for `find ...`; do ...; done", if any of the returned filenames have a space in them, it gets mangled. This should be able to handle any files.

Of course, this only works if you have rename installed on your system, so it's not a very portable command.

no grep, no perl, no pipe.

even better in zsh/bash4:

No find, no grep, no perl, no pipe

Great for sites like Gigapedia.org that give away great free rar'd books.

More similar commands here: http://www.howtogeek.com/howto/ubuntu/unzip-or-unrar-many-files-at-once-in-linux/

Just copy and paste the code in your terminal.

Note : sudo apt-get for debian versions , change as per your requirement .

Source : www.h3manth.com

Good for fixing web permissions. You might also want to do something like this and skip files or directories that begin with a period:

...or include a special case for scripts:

This should work anywhere perl and grep is available. :P

Stop tormenting the poor animal cat. See http://sial.org/howto/shell/useless-cat/.

Edit:

replaced

by

and, a lot uglier, with sed:

Edit:

Wanted to be shorter than the perl version. Still think that the perl version is the best..

In edit mode, toggle the case of a single word under the cursor in vim.

This command will generate "CHECK TABLE `db_name.table_name` ;" statements for all tables present in databases on a MySQL server, which can be piped into the mysql command. (Can also be altered to perform OPTIMIZE and REPAIR functions.)

Tested on MySQL 4.x and 5.x systems in a Linux environment under bash.

On Solaris 10 you used dtconfig -d to achieve this. The command will disable X and your system will now boot to a text console.

Get the IP address of all your network cards.

To change to $HOME in that manner you need to set a shell option. In zsh it is auto_cd, hence

in bash4 it is autocd, hence

What the option does is allow you to cd to a directory by just entering its name. This also works if the directory name is stored in a variable:

sends you to /var/www/lighttpd.

CAUTION: If a command or function name identical to the directory name exists it takes precedence.

Could use your ssh bash history if your known_hosts are hashed and you want to keep it hashed

Busiest seconds:

Find when debian packages were installed on a system.

A quick and simple way of outputting the start and end date of a certificate, you can simply use 'openssl x509 -in xxxxxx.crt -noout -enddate' to output the end date (ex. notAfter=Feb 01 11:30:32 2009 GMT) and with the date command you format the output to an ISO format.

For the start date use the switch -startdate and for end date use -enddate.

I use this to make skype blend better into my desktop :)

--disable-cleanlooks might not be nescessary to achieve the wanted effect.

205413

real 0m0.497s

user 0m0.220s

sys 0m0.268s

205413

real 0m3.776s

user 0m3.340s

sys 0m0.424s

*********

** EDIT: turns out this perl liner is mostly masturbation. this is slightly faster:

sh-3.2$ time { find . -maxdepth 1|wc -l; }

205414

real 0m0.456s

user 0m0.116s

sys 0m0.328s

** EDIT: now a slightly faster perl version

sh-3.2$ time perl -e 'if(opendir D,"."){++$c foreach readdir D}print $c-1,"\n"'

205414

real 0m0.415s

user 0m0.176s

sys 0m0.232s