Date: Sat, 18 Jul 2009 18:39:35 +0200 (CEST) From: Oliver Fromme <olli@lurza.secnetix.de> To: freebsd-chat@FreeBSD.ORG Subject: Re: Bourne shell short-circuit operators improperly documented Message-ID: <200907181639.n6IGdZxG015652@lurza.secnetix.de> In-Reply-To: <200907172257.QAA15292@lariat.net>
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Actually I've never regarded "&&" and "||" (and also "|" and "&") as operators, like real operators in a programming language, but as command separators, much like ";", but with special semantics. Note that foo && bar && baz foo || bar || baz is the same as if foo; then if bar; then baz; fi; fi if ! foo; then if ! bar; then baz; fi; fi Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "If you aim the gun at your foot and pull the trigger, it's UNIX's job to ensure reliable delivery of the bullet to where you aimed the gun (in this case, Mr. Foot)." -- Terry Lambert, FreeBSD-hackers mailing list.
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