15 Jul
2016
15 Jul
'16
3 p.m.
Dave Horsfall <dave(a)horsfall.org> wrote:
On Thu, 14 Jul 2016, Clem Cole wrote:
This isn't a BSDism: POSIX requires that most built-in commands also exist
as executables on the PATH. The exceptions are the "special built-in
commands" which manipulate the shell command language state, e.g. break
and set.
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#ta…
Tony.
--
f.anthony.n.finch <dot(a)dotat.at> http://dotat.at/ - I xn--zr8h punycode
Humber, Thames, Dover: West or southwest 4 or 5, increasing 6 at times. Slight
or moderate. Mainly fair. Good.
Could you be confusing the fact the true and
false were implemented by
external commands in some early shell's
And on the Mac and FreeBSD, they still are (as well as being builtins).
At one time they were shell scripts e.g. "exit 0" for "true".