The Unix `Who` Command

Re:The Unix `Who` Command by forgotpwd16 on Thursday September 03, 2020 @12:22PM (#24365624)

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.

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Re:The Unix `Who` Command by jf on Thursday September 03, 2020 @12:33PM (#24365755)

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

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Re:The Unix `Who` Command by forgotpwd16 on Thursday September 03, 2020 @01:40PM (#24366506)

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.

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Re:The Unix `Who` Command by jf on Thursday September 03, 2020 @09:48PM (#24370968)

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

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