Article View: comp.unix.shell
Article #1082Re: Need help on Bash syntax
From: Chet Ramey
Date: Thu, 06 Sep 1990 16:19
Date: Thu, 06 Sep 1990 16:19
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2055 bytes
Brad Appleton asks: >Im getting desperate for this info -- please give me as much info as you >can on bash arrays. OK. Bash does not have arrays. Yet. Maybe later. >Also, in bash, what characters need to be escaped inside of double >quotes (including "\", '$' and '`' etc ...) in order to interpreted >literally by the shell (I need an exhaustive list). Inside double quotes, all characters retain their literal meanings, with the exception of $, `, and \. $ and ` retain their special meaning. The backslash is special only when followed by one of the following characters: $, `, ", \, or <newline>. Here are some examples: cwns1$ recho "\\" argv[1] = "\" cwns1$ recho "\b" argv[1] = "\b" cwns1$ recho "$PS1" argv[1] = "cwns1$ " cwns1$ recho "`echo hi`" argv[1] = "hi" cwns1$ recho "\$" argv[1] = "$" cwns1$ recho "\"" argv[1] = """ cwns1$ recho "\`" argv[1] = "`" I have fixed a lot of bugs in bash quoting and substitution, which should all be in the next version. >I have somewhat of a time limit and I cant wait long enough for the >documentation to arrive (and no one here has it). FTP to cwns1.ins.cwru.edu (129.22.8.43) for my bash man page. It's in ~ftp/pub/bash.1. The file ~ftp/pub/CWRU-differences lists the items that differ between what is described in the manual (which is for the version of bash in use at CWRU). Most of that stuff should make it into version 1.06. Chet -- Chet Ramey ``Levi Stubbs' tears run down Network Services Group his face...'' Case Western Reserve University chet@ins.CWRU.Edu
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!tut.cis.ohio-state.edu!usenet.ins.cwru.edu!cwns1!chet From: chet@cwns1.CWRU.EDU (Chet Ramey) Newsgroups: comp.unix.shell Subject: Re: Need help on Bash syntax Message-ID: <1990Sep6.161956.11780@usenet.ins.cwru.edu> Date: 6 Sep 90 16:19:56 GMT References: <893@travis.csd.harris.com> Sender: news@usenet.ins.cwru.edu Reply-To: chet@po.CWRU.Edu Organization: Case Western Reserve Univ. Cleveland, Ohio, (USA) Lines: 52