19 Nov
2020
19 Nov
'20
10:16 p.m.
On 11/18/20 7:44 PM, George Michaelson wrote:
A related but different "thing" is when the
cd activity became a
pushdown stack of 2 (is it more? I never bothered checking)
somebody realised going "there and back again" was innately useful.
It was definitely in ksh by 1986. It never made it into any of the Bourne
shells, but POSIX adopted it because it was in ksh88. I don't know
whether it was in the 1983 ksh version.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet(a)case.edu http://tiswww.cwru.edu/~chet/