Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris

Re: How can I use a text file as a search string?

by perlfan (Curate)
on Dec 05, 2007 at 15:11 UTC ( #655104=note: print w/replies, xml ) Need Help??

in reply to How can I use a text file as a search string?

If you are searching for literal strings, and don't *really* need regexs, then you could create a hash, where each name in the .txt file is one you're expecting. To search, you'd just use exists($hash{$name_to_check}) to see it was in your text file.
my @names_to_check = qw/ bob sue joe /; my %validnames = (); # build lookup while(<>) { chomp; $validnames{$_}++; # also filters dups in *.txt } # check names for (@names_to_check) { print "$_ is okay\n" if (exists($validnames{$_})); }
The <> of course implies STDIN, so you'd have to redirect or pipe the contents of *.txt into the script at the commandline.

Replies are listed 'Best First'.
Re^2: How can I use a text file as a search string?
by btobin0 (Acolyte) on Dec 06, 2007 at 06:30 UTC
    This is what ihave so far. the part that is asking to look for perl. I want to change it to where it looks in a list like a txt or dat file.
    open FILE, "/home/btobin/data.txt" || die "Unable to Open: $!"; while (<FILE>) { if ($_ =~ "Perl") { $check = "$_"; } } close FILE; open FILE2, ">>/home/btobin/data2.txt" || die "Unable to Open: $!"; print FILE2 "$check\n"; close FILE2;

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://655104]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (14)
As of 2016-10-24 15:02 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (307 votes). Check out past polls.