Showing entries with tag "trim".

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Command line trim()

Often I'll need to trim (remove leading and trailing whitespace) from command line output. The easiest way I've found is to pipe to a one line Perl script

my_messy_command.sh | perl -pE 's/^\s+|\s+$//'

This runs a replace regexp on the input, trims extraneous whitespace and outputs the cleaner version.

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Perlfunc: trim()

Perl function to trim leading and trailing whitespace, borrowed from String::Util.

sub trim {
    my $s = shift();

    if (!defined($s)) {
        return undef;
    }

    $s =~ s/^\s*//u;
    $s =~ s/\s*$//u;

    return $s;
}

To trim an each item in an array you can do:

@array = map { trim($_) } @array;
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