You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
28 lines
712 B
28 lines
712 B
#!/usr/bin/env perl
|
|
|
|
use warnings;
|
|
use strict;
|
|
use 5.10.0;
|
|
|
|
# Quote a pattern to match:
|
|
# - /x means "extended syntax" - can include whitespace and comments
|
|
# - /i means "case insensitive"
|
|
# - qr is a quote operator - quotes everything between the delimiters
|
|
# as a regular expression
|
|
my $pattern = qr/
|
|
^ # Start
|
|
( \d{4}-\d{2}-\d{2} ) # Date
|
|
.* # Everything else
|
|
$ # End of line
|
|
/xi;
|
|
|
|
# Loop over each line of:
|
|
# 1. standard input, if given
|
|
# OR
|
|
# 2. the files given on the CLI
|
|
while (<>) {
|
|
# The line is now in $_, the default variable.
|
|
|
|
# Print the first capture group if we got a match:
|
|
say $1 if m/$pattern/;
|
|
}
|