[TUHS] Shell control through external commands

[Rudi Blom]

Just for the fun of it results on a few UNIX versions

Intel - SCO UNIX 3.2V4.2
/bin/true:		empty file
/bin/false:		contains "exit 255"

> file $(which true) $(which false)

Alpha - Digital Unix 4.0G
/usr/bin/true:	COFF format alpha dynamically linked, demand paged
executable or object module stripped - version 3.11-10
/usr/bin/false:	COFF format alpha dynamically linked, demand paged
executable or object module stripped - version 3.11-10

Alpha - Tru64 V5.1B
/usr/bin/true:	COFF format alpha dynamically linked, demand paged
executable or object module stripped - version 3.13-14
/usr/bin/false:	COFF format alpha dynamically linked, demand paged
executable or object module stripped - version 3.13-14

Itanium - HP-UX 11i B.11.23 & HP-UX 11i B.11.31
/sbin/true:		ELF-32 executable object file - IA64
/sbin/false:	ELF-32 executable object file - IA64