Date: Sun, 28 Jul 2002 16:00:32 -0400 From: Andrew J Caines <A.J.Caines@halplant.com> To: freebsd-questions@FreeBSD.ORG Subject: Re: 'let' syntax in /bin/sh Message-ID: <20020728200032.GM85183@hal9000.halplant.com> In-Reply-To: <20020728194431.GD73369@dan.emsphone.com> References: <20020726221426.21bacb51.ugly@inhuman.org> <20020728194431.GD73369@dan.emsphone.com>
next in thread | previous in thread | raw e-mail | index | archive | help
To add a note to Dan Nelson's good advice... > just do "x=0". If you want to assign the result of a math expression > to a variable, do "y=$(($x+1))". "let ..." is equivalent to "$(( ... ))" The shell arithmetic - (( ... )) - is not a common feature of the many and various Bourne shell implementations. If you're looking for a lowest common denominator for shell arithmetic, see expr(1). Shell arithmetic is implemented quite consistently in ksh and bash (and probably zsh). -Andrew- -- _______________________________________________________________________ | -Andrew J. Caines- Unix Systems Engineer A.J.Caines@halplant.com | | "They that can give up essential liberty to obtain a little temporary | | safety deserve neither liberty nor safety" - Benjamin Franklin, 1759 | To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020728200032.GM85183>