From: lyndon@orthanc.ca (Lyndon Nerenberg)
Subject: [TUHS] Bourne shell and comments
Date: Tue, 18 Apr 2017 17:50:05 -0700 [thread overview]
Message-ID: <DBD26EB7-FFAE-472F-9C71-27ECAC2A085E@orthanc.ca> (raw)
In-Reply-To: <020a01d2b885$94bd49c0$be37dd40$@ronnatalie.com>
> Ron said:
> I still remember using : for a comment in the V6 shell. Was also the label
> for goto.
What's cool about ':' vs. '#' is:
-----8<-----8<-----8<-----8<-----8<-----8<-----
function cd {
command cd "$@" && setprompt
}
function setprompt {
PS1=": "`id -un`@`hostname|sed 's;\..*$;;'`:'${PWD}; '; export PS1
}
setprompt
-----8<-----8<-----8<-----8<-----8<-----8<-----
Stick that in your .env and you get a snarf-and-barf'able shell prompt that evals as a noop. Blatantly ripped off from plan9port IIRC. I run this across all manner of *BSD and Solaris and Linux and it just works.
--lyndon
next prev parent reply other threads:[~2017-04-19 0:50 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-18 20:48 Warren Toomey
2017-04-18 20:51 ` Ron Natalie
2017-04-18 21:45 ` Grant Taylor
2017-04-18 22:16 ` Ron Natalie
2017-04-18 22:40 ` Toby Thain
2017-04-19 18:36 ` Stephen Kitt
2017-04-19 20:35 ` Arthur Krewat
2017-04-19 0:50 ` Lyndon Nerenberg [this message]
2017-04-19 8:35 ` Andreas Kusalananda Kähäri
2017-04-19 16:31 ` Grant Taylor
2017-04-19 16:59 ` Andreas Kusalananda Kähäri
2017-04-19 17:36 ` Bakul Shah
2017-04-19 17:59 ` Grant Taylor
2017-04-20 20:13 ` Clem Cole
2017-04-20 20:17 ` Chet Ramey
2017-04-21 3:28 ` arnold
2017-04-21 3:43 ` Bakul Shah
2017-04-21 6:07 ` Steve Nickolas
2017-04-21 11:18 ` Clem cole
2017-04-21 13:20 ` Michael Kjörling
2017-04-18 20:56 ` Chet Ramey
2017-04-19 21:02 ` Sven Mascheck
2017-04-19 22:07 ` Steffen Nurpmeso
2017-04-20 0:31 ` shawn wilson
2017-04-20 0:35 ` shawn wilson
2017-04-20 3:50 ` Andy Kosela
2017-04-20 4:47 ` Warner Losh
2017-04-21 1:42 ` Nemo
2017-04-21 10:54 ` Ron Natalie
2017-04-21 14:22 ` Andy Kosela
2017-04-21 14:45 ` Ron Natalie
2017-04-22 2:46 ` Dave Horsfall
2017-04-20 16:39 ` Sven Mascheck
2017-04-20 21:42 ` Steffen Nurpmeso
2017-04-19 19:18 Doug McIlroy
2017-04-21 17:03 Doug McIlroy
2017-04-21 18:15 ` Clem Cole
2017-04-21 19:13 ` Steve Johnson
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