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use Carp; # ... sub pw_init { my ($passwd_file) = @_; $passwd_file = "/etc/passwd" unless defined $passwd_file; my $passwd = new IO::File $passwd_file or croak "Unable to read from $passwd_file: $!\n"; # ... } |
Bibliotheksmodule schieben die Schuld gerne auf den
Aufrufer und verwenden daher gerne croak aus
dem Modul Carp anstatt die.
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use Passwd4 qw(getpwent_by_login pw_init); my $cmdname = $0; $cmdname =~ s{.*/}{}; my $usage = "Usage: $cmdname login [passwd]\n"; die $usage if @ARGV == 0; my $login = shift; pw_init(shift) if @ARGV > 0; die $usage unless @ARGV == 0; |
doolin$ perl testpasswd4.pl borchert /tmp/blubber Unable to read from /tmp/blubber: No such file or directory at testpasswd4.pl line 11 doolin$ |
Copyright © 1996 - 2003 Andreas Borchert, in HTML konvertiert am 01.10.2003 |