How get last commnda history line number directly

[almahdi]

How to get last commnda history line number purely & directly on bash script
or prompt ?

as it's pure & directly viable in PS1 env. var.
PS1=`echo \!`

confusingly bash 'mainstream' itself wasn't found way to do




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Sent from: http://gnu-bash.2382.n7.nabble.com/

[Greg Wooledge]

On Tue, Sep 01, 2020 at 02:14:33AM -0700, almahdi wrote:
> How to get last commnda history line number purely & directly on bash script
> or prompt ?
>
> as it's pure & directly viable in PS1 env. var.
> PS1=`echo \!`
>
> confusingly bash 'mainstream' itself wasn't found way to do

unicorn:~$ x='\!'; echo "${x@P}"
590

I don't know how you plan to *use* this, though. It sounds like an X-Y
problem to me.

[Chet Ramey]

On 9/1/20 5:14 AM, almahdi wrote:
> How to get last commnda history line number purely & directly on bash script
> or prompt ?
>
> as it's pure & directly viable in PS1 env. var.
> PS1=`echo \!`

HISTCMD
The history number, or index in the history list, of the current
command. Assignments to HISTCMD are ignored. If HISTCMD is un-
set, it loses its special properties, even if it is subsequently
reset.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU ch...@case.edu http://tiswww.cwru.edu/~chet/