Date: Sun, 17 Sep 2017 19:40:20 +0200 From: Polytropon <freebsd@edvax.de> To: Manish Jain <bourne.identity@hotmail.com> Cc: "Steve O'Hara-Smith" <steve@sohara.org>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: case command Message-ID: <20170917194020.8f6db248.freebsd@edvax.de> In-Reply-To: <VI1PR02MB12002177D7F2E684D387C90AF6620@VI1PR02MB1200.eurprd02.prod.outlook.com> References: <59BE89E1.3050209@gmail.com> <VI1PR02MB1200B54F7772D37F6BE020F4F6620@VI1PR02MB1200.eurprd02.prod.outlook.com> <20170917155649.e869897ddcc97c3c9d04929c@sohara.org> <VI1PR02MB12002177D7F2E684D387C90AF6620@VI1PR02MB1200.eurprd02.prod.outlook.com>
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On Sun, 17 Sep 2017 15:01:32 +0000, Manish Jain wrote: > > > On 09/17/17 20:26, Steve O'Hara-Smith wrote: > > On Sun, 17 Sep 2017 14:50:00 +0000 > > Manish Jain <bourne.identity@hotmail.com> wrote: > > > >> > >> > >> On 09/17/17 20:12, Ernie Luzar wrote: > >>> Looking for a system command that a I can pip a file through to change > >>> all uppercase content to lower case. > >>> > >>> Is there such a command line command? > >> > >> cat <file> | tr '[:upper:]' '[:lower:]' > > > > That poor overworked cat :) > > > > tr '[:upper:]' '[:lower:]' < <file> > > > > Being the proud owner of a beautiful cat, I rather feel inclined to pay > tribute to the family every now and then : - ) The typical "useless use of cat" often is just an illustration of how to use a certain command within a pipe chain. In cases where no piping is needed, redirection can be used easily. % cat food.txt | grep "catfood" > mister_kitty.txt Or: % grep "catfood" < food.txt > mister_kitty.txt I hope the cat will understand now. =^_^= -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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