[forgotpwd16]

Source for the mentioned script: https://github.com/0intro/plan9/blob/master/rc/bin/who. Also, other utilities implemented as scripts are fshalt (P9's shutdown), kill, lookman (P9's apropos), uptime and whois.

[jf]

Does anybody know why there are line breaks in the sed command?

[forgotpwd16]

It runs multiple expressions. That is

  sed '/pattern1/d
  pattern2/d'

is the same with

  sed '/pattern1/d; /pattern2/d'

and

  sed -e '/pattern1/d' -e '/pattern2/d'

I believe those are portable across all `sed` implementations, and they at least work with GNU `sed --posix` and plan9port's sed.

[jf]

Thank you! This is exactly the kind of reply I was hoping for.