From mboxrd@z Thu Jan 1 00:00:00 1970 From: peter@rulingia.com (Peter Jeremy) Date: Fri, 15 Jul 2016 08:49:39 +1000 Subject: [TUHS] Shell control through external commands In-Reply-To: References: <4fcf31ef-50af-10b5-0c34-ad647ed10a4e@aueb.gr> Message-ID: <20160714224939.GA35271@server.rulingia.com> On 2016-Jul-15 08:36:56 +1000, Dave Horsfall wrote: >On Thu, 14 Jul 2016, Clem Cole wrote: >> Could you be confusing the fact the true and false were implemented by >> external commands in some early shell's I was always amused by AT&T adding a multi-kB copyright notice to what had previously been an empty file. >And on the Mac and FreeBSD, they still are (as well as being builtins). FreeBSD provides a convenient list of what commands are (currently) builtin to the provided shells and available externally: https://www.freebsd.org/cgi/man.cgi?builtin -- Peter Jeremy -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 949 bytes Desc: not available URL: