Postfix - Regex - Search after a string - issue [duplicate]

I need a regular expression that will only match to the String if it ends with the target that I am looking for. I need to locate a file with a specific extension, problem is this extension also comes in other files. For example I have two files named

B82177_2014-07-08T141507758Z.ccf

and

B82177_2014-07-08T141507758Z.ccf.done

I only want to grab the first of these and my pattern is:

.*\.ccf

but this grabs both.

Any suggestions appreciated, I am a newbie to regular expressions.

Use an end anchor ($):

.*\.ccf$

This will match any string that ends with .ccf, or in multi-line mode, any line that ends with .ccf.

$ is used to match the end of the string. and can be used like

"string"$

like

xyz$

if you want to end with xzy