Re: bash/ksh differences (fg and other job control commands) (Was: (bash) How (really!) does the "current job" get determined?)

On 07.10.2024 15:19, Kenny McCormack wrote:

In article <ve0lmv$1nkmd$1@dont-email.me>,
Janis Papanagnou  <janis_papanagnou+ng@hotmail.com> wrote:
...

Incidentally Bolsky/Korn notes: "When a command in this
section [Job Control] takes an argument called /job/, /job/ can be

Correction: the chapter was "Operating System - Job Control" (and not
the also existing chapter "Job Control").

a process id." - I don't know about Bash, but Kornshell at least
seems to have done it right.

 
FWIW, I just tested with the "ksh" on this system, and fg does accept a pid
argument.
 
So, yes, ksh seems to have gotten it right.  Note that ksh seems to have
lots of different versions and forks, so I have no idea what exactly I was
testing.

Newer versions support  ksh --version  to get that information.
I'm used to type  <Esc> <Ctrl-V>  (in Vi-mode, with  set -o vi
defined).

I assume you could test on whatever version you normally use.

The book I mentioned is old, so I expect that any ksh93 version
(and all derived versions) to behave that way. Moreover, there's
also not the typical remark about "availability in newer systems
only", so there's a good chance that it was already existing in
the ksh88 versions - I wouldn't bet on any early clone, though.

Janis