Date: Tue, 8 Jan 2008 00:01:18 -0600 From: Jon Hamilton <hamilton@pobox.com> To: Paul Procacci <pprocacci@datapipe.com> Cc: Gary Kline <kline@magnesium.net>, FreeBSD Mailing List <freebsd-questions@FreeBSD.ORG> Subject: Re: is there a /bin/sh method to tell the ending of a file Message-ID: <20080108060118.GF1965@woodstock.nethamilton.net> In-Reply-To: <20080108053408.GA95218@procacci.kicks-ass.org> References: <20080108051058.GA19698@thought.org> <20080108053408.GA95218@procacci.kicks-ass.org>
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} On Mon, Jan 07, 2008 at 09:10:58PM -0800, Gary Kline wrote: } Paul Procacci <pprocacci@datapipe.com>, said on Mon Jan 07, 2008 [11:34:08 PM]: } > Hi All, } > } > Is there an easy way of determing whether a string//filename ends in } > *.gz? using /bin/sh? I spend around 20 minutes cobbling together } > scripts to burn ISO files last night. Then blindly wasted one CD-R file that } > was gzipped..... tar barfs on you,but cdrecord dev=foo.gz writes } > exactly that. I'd like to add a line that yells at me, then gunzips and does } > an MD5; then writes. (In C, no prob; C lets me fly, but not /bin/sh. } > But anyway, if any guru can clue me in, thanks. I think my brain is in Maui } > for a few days. } > } Is this what you mean? } } --------------------- } #!/bin/sh } } STRING="mystring.gz" } } if [ ".gz" = "`echo \"$STRING\" | sed -n 's/.*\(\.gz\)$/\1/p'`" ]; then } echo test; } fi } } ----------------------- Works (I assume) but perhaps easier to read and more "native" might be: case "$STRING" in *\.gz) echo "Found .gz suffix" ;; *) echo "Not a .gz suffix" ;; esac Sh is a pretty versatile creature; I'm sure there are a thousand more ways all of which work, and some of which will cause religious arguments for decades :) -- Jon Hamilton hamilton@pobox.com
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