How to do a grep in a variable? I have stored the wget output in a variable and I need to extract out some strings from it.
Like the content of the variable is
upgrade http://wordpress.org/download/ http://wordpress.org/wordpress-3.0.5.zip 3.0.5 en_US 4.3 4.1.2
I need to check if the string contains the word upgrade, so I can do a simple grep and then check the exit status of it by
$? and proceed. But how can I get the value
3.0.5 which is actually the fourth word? And how to actually grep in a variable?