Regular expression to link twitter users…

Replace this '@(\w+)'
With this '<a href="http://twitter.com/\1">@\1</a>'

Use this command to find all the links in the current directory…

find . -lname "*"

Show link status of ‘eth0′

mii-tool eth0

Show link status of all interfaces

ip link show

This is how to create hard and soft links in Linux. Remember, a directory cannot be hard linked.

#Hard link
ln /path/to/file.ext .

#Soft link
ln -s /path/to/file.ext .

[tags]link, shortcut, soft,hard,linux,command[/tags]

Show the headers of an URL using Curl

curl http://example.com -I