Here's a simple one, that seems to cover it:
The "data" is a file called "lines":
1 flew over the cuckoos nest
12 flew over the cuckoos nest
#!/usr/bin/perl -w
use strict;
my $line = "/home/trix/lines";
open (L, "$line") || die "$!\n";
while (my $lines = <L>) {
chomp $lines;
if ($lines =~ /^1{1}\D/) {
print "my lines are $lines\n";
}
else { print "Nope!\n";
}
}
Update: this regex doesn't catch lines that begin with "1d", for instance. Take other's suggestions.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|