Comments on: BASH Tip: Alternative to expr for arithmetic http://muffinresearch.co.uk/archives/2007/08/30/bash-tip-alternative-to-expr-for-arithmetic/ the personal blog of Stuart Colville covering modern web development techniques and best practices Thu, 16 Oct 2008 03:39:02 +0000 http://wordpress.org/?v=2.5.1 By: akn http://muffinresearch.co.uk/archives/2007/08/30/bash-tip-alternative-to-expr-for-arithmetic/#comment-64553 akn Tue, 19 Aug 2008 16:55:03 +0000 http://muffinresearch.co.uk/archives/2007/08/30/bash-tip-alternative-to-expr-for-arithmetic/#comment-64553 Hi, Thanks for that tip. This was very useful i.e. to have a simplified replacement for the messy expr. In fact I didn't know how to do compound statements using expr. For example how to do this expression (var1 - var2)*100/var1, since bash complains about those paranthesis. But using the other alternative I could easily compute the value as $[(var1-var2)*100/var2]. You don't have to worry about escaping the *, + etc. in the expression. It is so easy to use! Thanks for the tip. Hi,

Thanks for that tip. This was very useful i.e. to have a simplified replacement for the messy expr. In fact I didn’t know how to do compound statements using expr. For example how to do this expression (var1 - var2)*100/var1, since bash complains about those paranthesis. But using the other alternative I could easily compute the value as $[(var1-var2)*100/var2]. You don’t have to worry about escaping the *, + etc. in the expression. It is so easy to use! Thanks for the tip.

]]> By: Kenan Bektas http://muffinresearch.co.uk/archives/2007/08/30/bash-tip-alternative-to-expr-for-arithmetic/#comment-58112 Kenan Bektas Sun, 02 Sep 2007 05:34:23 +0000 http://muffinresearch.co.uk/archives/2007/08/30/bash-tip-alternative-to-expr-for-arithmetic/#comment-58112 This hint is totally cool. Thanks,. -Deniz Gezmis This hint is totally cool.

Thanks,.

-Deniz Gezmis

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