On Wed, Sep 09, 2020 at 11:29:01AM -0700, L A Walsh wrote: > On 9/8/2020 5:11 AM, Greg Wooledge wrote: > > On Sun, Sep 06, 2020 at 01:18:22PM -0700, L A Walsh wrote: > > > > as it's pure & directly viable in PS1 env. var. > > > > PS1=`echo \!` > > > --- > > > Doesn't work if you don't have '!' support (I generally found > > > '!' more often did unwanted things, but I never used csh): > > > > You're talking abuot csh-style history expansion (set -o histexpand), > > right? That has nothing to do with the expansion of \! within PS1. > > > > I've got histexpand disabled, and PS1='\! ' gives the number just fine. > Like this? > # t='\! ' > # echo $t > \! > --- > As I said, doesn't work if you don't have '!' support.
No. I said PS1='\! ' and that's what I meant. Not some other random variable. unicorn:~$ PS1='\! ' 502 echo hi hi 503
