[TUHS] Bourne shell and comments
Lyndon Nerenberg
lyndon at orthanc.ca
Wed Apr 19 10:50:05 AEST 2017
> 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
More information about the TUHS
mailing list