Date: Fri, 16 Jan 2004 18:37:38 -0800 (PST) From: Jean-Marc Zucconi <jmz@dalai-zebu.org> To: Brett Glass <brett@lariat.org> Cc: questions@freebsd.org Subject: Re: General UNIX puzzle Message-ID: <200401170237.i0H2bcb3049359@freefall.freebsd.org> In-Reply-To: <6.0.0.22.2.20040116192550.05046df8@localhost> References: <6.0.0.22.2.20040116192550.05046df8@localhost>
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>>>>> Brett Glass writes: > I was asked a good question today about how to do some simple tasks using > standard UNIX tools, and am curious what answers people on the list might > come up with. > What are the simplest, most efficient ways to: > 1) Delete the Nth line from a text file? sed -e Nd <file > 2) Insert a specified line in a file after the Nth line, leaving the rest > of the text the same? sed -e 'Na\ line of text' <file > 3) Delete the first line containing a particular string? awk '{if (/string/ && i==0) i++; else print $0}'<file > 4) Insert a specified line after the first line containing a particular > string, leaving the rest of the file the same? You can infer it by yourself after 3) Jean-Marc -- Jean-Marc Zucconi -- PGP Key: finger jmz@FreeBSD.org [KeyID: 400B38E9]
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