Nice trick with split. Can be improved somewhat...

#                1         2         3         4
#       1234567890123456789012345678901234567890123
perl -e'print sort{@x=split":",$a.$b;$x[8]-$x[2]}<>' /etc/passwd

[download]

Or even:

#                1         2         3         4
#       123456789012345678901234567890123456789012
perl -e'print sort{(@x=split":",$a.$b)[8]-$x[2]}<>' /etc/passwd

[download]

Update: or with a sufficiently outdated Perl...

#                     1         2         3         4
#            1234567890123456789012345678901234567890
perl5.8.9 -e'print sort{split":",$a.$b;$_[8]-$_[2]}<>' /etc/passwd

[download]

(split in void context was deprecated in 5.10 and dropped in 5.12 IIRC.)

package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name

In reply to Re^2: Golf: reverse sort /etc/passwd by UID by tobyink
in thread Golf: reverse sort /etc/passwd by UID by Tommy

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