Regular expression

2010

Some examples with egrep

• IPv4 address

([0-9]{1,3}\.){3}[0-9]{1,3}

• MAC address

([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}

• E-mail address

([a-zA-Z0-9]+(([\.\-\_]?[a-zA-Z0-9]+)+)?)\@(([a-zA-Z0-9]+[\.\-\_])+[a-zA-Z]{2,4})

• URL

(ftps?|https?)://[a-zA-Z0-9:/._=&~,?-]+