Karyn Williams wrote: > I need to check for strings in a file. An example would be checking for a > username in /etc/passwd or /var/log/maillog. The string is in another > file, sometimes a single field on a line by itself, sometimes in a line > with other strings. Based on what I have seen online and what I have done > in other scripts I can : > > > 1. slurp the file into a single string and then check for a match. > > 2. read the relevent field from the file into hash keys and check for a > match. > > 3. Loop through the file line by line and look for a match. > > > Generally there are 1 - 2,000 strings, and 2,000 to 1,500,000 lines per > file. > > I am wondering how these different methods may impact performance.
perldoc -q "How do I efficiently match many regular expressions at once" John -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/
