[brigandish]

You can cut that back a bit with the '-n' switch. Using an example from this helpful article[1] on some of the switches Ruby inherited from Perl:

    ps ax | ruby -e 'ARGF.each { |line| puts line.split.first if line =~ /top/ }'

becomes:

    ps ax | ruby -ne 'puts $_.split.first if $_ =~ /top/'

It even squashes the extra newline the ARGF version prints out first.

[1] https://robm.me.uk/ruby/2013/11/20/ruby-enp.html

[asicsp]

Well, my book linked in this post is all about using Ruby from cli, with Perl like switches.

    ps ax | ruby -ane 'puts $F[0] if /top/'

[brigandish]

Nice, I didn't know about autosplit.