only output the nth line
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From: Jozsi Vadkan on 13 May 2010 12:00 yes, that's the problem, it only outputs the first, second, and fourth line! ii sed 4.1.5-6 The GNU sed stream editor Debian Lenny 2010. 05. 12, szerda keltezéssel 12.25-kor Hugo Vanwoerkom ezt írta: > Jozsi Vadkan wrote: > > I have a file: > > > <snip> > > > > > > And i want to only output the first, second, and fourth line to another > > file. > > > > The: > > > > sed -n '1,2p;4p' file.txt > > > > hugo(a)debian:~$ sed -n '1,2p;4p' file.txt > daemon > 1): > 0 > > ii sed 4.1.5-8 The GNU sed stream editor > > Hugo > > -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/1273765762.3998.1.camel(a)localhost
From: Boyd Stephen Smith Jr. on 13 May 2010 12:10 On Thursday 13 May 2010 10:49:22 Jozsi Vadkan wrote: > 2010. 05. 12, szerda keltezéssel 12.25-kor Hugo Vanwoerkom ezt Ãrta: > > Jozsi Vadkan wrote: > > > I have a file: > > > And i want to only output the first, second, and fourth line to another > > > file. > > > > hugo(a)debian:~$ sed -n '1,2p;4p' file.txt > > yes, that's the problem, it only outputs the first, second, and fourth > line! I think that perhaps there is some language barrier. Your original post indicates that you want lines 1, 2, 4 and no others output. "i want only output the first, second, and fourth line" Your most recent post says that is "the problem". Which I infer means something you don't want. Could you maybe rephrase the question, or at least be a bit more verbose? ... If you want the output to go to a file try something like (sed -ne '1,2p;4p' "$input" > "$output"). -- Boyd Stephen Smith Jr. ,= ,-_-. =. bss(a)iguanasuicide.net ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.net/ \_/
From: Jozsi Vadkan on 13 May 2010 12:40 oops, typo I wanted to say that it only outputs the first, second, and fourht line _once_ so the 8th, etc lines are not in the output sorry:D 2010. 05. 13, csütörtök keltezéssel 11.04-kor Boyd Stephen Smith Jr. ezt írta: > On Thursday 13 May 2010 10:49:22 Jozsi Vadkan wrote: > > 2010. 05. 12, szerda keltezéssel 12.25-kor Hugo Vanwoerkom ezt írta: > > > Jozsi Vadkan wrote: > > > > I have a file: > > > > And i want to only output the first, second, and fourth line to another > > > > file. > > > > > > hugo(a)debian:~$ sed -n '1,2p;4p' file.txt > > > > yes, that's the problem, it only outputs the first, second, and fourth > > line! > > I think that perhaps there is some language barrier. > > Your original post indicates that you want lines 1, 2, 4 and no others output. > "i want only output the first, second, and fourth line" > > Your most recent post says that is "the problem". Which I infer means > something you don't want. > > Could you maybe rephrase the question, or at least be a bit more verbose? > > ... > > If you want the output to go to a file try something like (sed -ne '1,2p;4p' > "$input" > "$output"). > -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/1273768493.3998.4.camel(a)localhost
From: Sjoerd Hardeman on 13 May 2010 13:10 Op 13-05-10 18:34, Jozsi Vadkan schreef: >> I think that perhaps there is some language barrier. >> >> Your original post indicates that you want lines 1, 2, 4 and no others output. >> "i want only output the first, second, and fourth line" >> >> Your most recent post says that is "the problem". Which I infer means >> something you don't want. >> >> Could you maybe rephrase the question, or at least be a bit more verbose? > oops, typo > > I wanted to say that it only outputs the first, second, and fourht line > _once_ > > so the 8th, etc lines are not in the output Perhaps you can write down again what you *do* want to achieve? I'm not understanding it yet, and maybe I'm not alone. Sjoerd PS. Can you please bottom-post when replying? That's the preferred way of replying on this list
From: Boyd Stephen Smith Jr. on 13 May 2010 13:20
TOFU fixed. Please trim your replies to only the required context. On Thursday 13 May 2010 11:34:53 Jozsi Vadkan wrote: > 2010. 05. 13, csütörtök keltezéssel 11.04-kor Boyd Stephen Smith Jr. ezt > > Ãrta: > > On Thursday 13 May 2010 10:49:22 Jozsi Vadkan wrote: > > > 2010. 05. 12, szerda keltezéssel 12.25-kor Hugo Vanwoerkom ezt Ãrta: > > > > Jozsi Vadkan wrote: > > > > > I have a file: > > > > > And i want to only output the first, second, and fourth line to > > > > > another file. > > > > > > > > hugo(a)debian:~$ sed -n '1,2p;4p' file.txt > > > > > > yes, that's the problem, it only outputs the first, second, and fourth > > > line! > > > > I think that perhaps there is some language barrier. > > oops, typo > > I wanted to say that it only outputs the first, second, and fourht line > _once_ > > so the 8th, etc lines are not in the output Yes. You didn't tell sed to do that. You also didn't tell *us* you wanted that. The key part is "etc." (i.e. "and others"), you never indicated you wanted anything other than the 1st, 2nd, and 4th lines. So, what you want is every Nth line whenever N is a power of two? Sounds like homework. I already did my homework and have my degree; I don't intend to do yours. -- Boyd Stephen Smith Jr. ,= ,-_-. =. bss(a)iguanasuicide.net ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.net/ \_/ |