Jamie Lokier <jamie@xxxxxxxxxxxxx> writes: > Pádraig Brady wrote: >> > The $(( ... )) construct is standard POSIX shell syntax, see >> > http://www.opengroup.org/onlinepubs/000095399/utilities/xcu_chap02.html#tag_02_06_04 >> > >> > Bash supports $[ ... ] as an alternate syntax for the same thing. >> > Perhaps you were thinking of that. >> >> I think the misconception that $(( ... )) is a bashism is caused by >> the wrong highlighting defaults chosen by vim. > > I think the misconception is because traditional unix bourne shells > don't implement that construct. I just tried it on a few machines, > and it failed on 4 of them. Admittedly, the only up to date one is > running Solaris 10; the others are older unixes that you're unlikely > to build Linux on. On Solaris, /usr/xpg4/bin/sh is usually a POSIX-compliant shell. I don't know how long it has been there. -- Måns Rullgård mans@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
