[Tutor] Grepping a file for words in a list

[Bob Gailer]

John Purser wrote:
> Hello,
>
> I'm writing a system admin script in python that checks recently
> accessed files for keywords like "failed, denied, error,..." etc.  I'm
> using popen to call grep -F <LIST> <LOG_FILE> but it's VERY slow.  Can
> anyone suggest a faster method to do this?
>   
I don't know whether it'd be faster, but you could read the file into a 
Python string, then use re to find the keywords. What do you do after 
finding them?