[TUHS] head/sed/tail (was The Unix shell: a 50-year view)

[Theodore Y. Ts'o]

On Fri, Jul 16, 2021 at 08:17:18AM -0600, Nelson H. F. Beebe wrote:
> 
> I confess that I had forgotten about the TOPS-20 ALERT command and its
> Unix equivalent, leave.  As Doug noted, leave is not in Linux systems,
> but it still exists in the BSD world, in DragonFlyBSD, FreeBSD,
> NetBSD, OpenBSD, and their many derivatives.

The leave program isn't installed by default, but it is available in
many if not most distributions (I checked Debian, Fedora and Ubuntu).
You just have to install it ("apt-get install leave" on Debian and
Ubuntu).  The upstream sources at least for the Debian package is from
NetBSD.

	      		     	       - Ted