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convert filenames in current directory to lowercase

Continuously show wifi signal strength on a mac
The closer to zero the better.Credit to TheSeb on macrumors: http://forums.macrumors.com/showthread.php?t=1289884

Set file access control lists
The file myfile is owned by tom and has read and write permissions for tom. Group and other permissions are empty which make myfile readable and writable only by tom. setfacl enables user tom to give read permission to user john only. The command 'ls -l' shows a '+' sign telling us that file access control list has been setup for myfile.

rename all images in folder with prefix of date and time from exif data
jhead is required

move you up one directory quickly
In bash, this turns on auto cd. If a command is just a directory name, it cd's into that directory.

Get all links of a website

HTTP Get of a web page via proxy server with login credentials
If you are behind a proxy server and have to authenticate with proxy server to browser web pages then you have to pass proxy server address and its port number along with user credentials to curl to got GET the page using curl. Example : "curl -U srikanth -x 167.85.103.70:8080 http://www.yahoo.com". In case you don't specify the password (as in the above example), curl will prompt to enter the password at the command line.

Recursive grep of all c++ source under the current directory

Extract title from HTML files
This command can be used to extract the title defined in HTML pages

Search commandlinefu.com from the command line using the API
Usage: cmdfu hello world


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