19 Apr
2017
19 Apr
'17
2:50 a.m.
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