Date: Sat, 19 Feb 2011 16:44:32 -0800 From: Chip Camden <sterling@camdensoftware.com> To: FreeBSD Mailing List <freebsd-questions@FreeBSD.ORG> Subject: Re: variable line-display pager? Message-ID: <20110220004432.GD2495@libertas.local.camdensoftware.com> In-Reply-To: <20110220004200.GC2495@libertas.local.camdensoftware.com> References: <20110219233736.GA20393@thought.org> <20110219235240.GA2495@libertas.local.camdensoftware.com> <20110220002300.GA21231@thought.org> <20110220004200.GC2495@libertas.local.camdensoftware.com>
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--HWvPVVuAAfuRc6SZ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Quoth Chip Camden on Saturday, 19 February 2011: > Quoth Gary Kline on Saturday, 19 February 2011: > > On Sat, Feb 19, 2011 at 03:52:40PM -0800, Chip Camden wrote: > > > Quoth Gary Kline on Saturday, 19 February 2011: > > > > Need help findind a way of using existing unix utilities to diplay > > > > chunks of N lines of a text files. Here N <=3D the number of lines= in > > > > the file. > > > >=20 > > > > For instance, say that my xterm/console/"Konsole" is 80x53 lines. > > > > My text file is around 200 lines long and I want to use more or less > > > > or some GUI pager to display only 15 lines at one time. Tapping th= e=20 > > > > space bar would display another 15 lines and so on until EOF. Is > > > > there a way of doing with with flags of the existing /usr/bin/less > > > > or is there some other pager that I can build? > > > >=20 > > > > thanks, > > > >=20 > > > > gary > > > >=20 > > > >=20 > > > >=20 > > > > --=20 > > > > Gary Kline kline@thought.org http://www.thought.org Public Serv= ice Unix > > > > Journey Toward the Dawn, E-Book: http://www.thought.org > > > > The 7.98a release of Jottings: http://jottings.thought.org > > > >=20 > > > > _______________________________________________ > > > > freebsd-questions@freebsd.org mailing list > > > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > > > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@fre= ebsd.org" > > >=20 > > > The -z option is supposed to do this: > > >=20 > > > less -z15 file.txt > > >=20 > > > But it appears to work only on the second and successive pages. > >=20 > >=20 > >=20 > > Oh. So _that's_ why. I tried less -m 15 [because the man pages > > sais z=3DN; i just tried what you did with -z15. Full page first > > time, 15 lines each spacebar thereafter. > >=20 > > Zank you, Sir Chip.. Anybody else? I'm loathe to use anything gui, > > but here's where I'll be happy w ith something GUI THat i can > > squeeze my "15" or small-n lines' worth into. Can'y believe that > > there is nothing for all theses years.... I mean, geewhiz! > > Any idea where I Should look in ports or how to google this? > >=20 > >=20 > > gary > >=20 > > >=20 > > > --=20 > > > Sterling (Chip) Camden | sterling@camdensoftware.com | 2048D/3A978E4F > > > http://chipsquips.com | http://camdensoftware.com | http://chipsti= ps.com > >=20 > >=20 > >=20 > > --=20 > > Gary Kline kline@thought.org http://www.thought.org Public Service = Unix > > Journey Toward the Dawn, E-Book: http://www.thought.org > > The 7.98a release of Jottings: http://jottings.thought.org > >=20 > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd= .org" >=20 > Is this sort of what you're looking for? >=20 > #!/usr/bin/env ruby > require 'optparse' >=20 > pagesize =3D 15 >=20 > optparse =3D OptionParser.new do |opts| > opts.banner =3D 'usage: npg [-n pagesize] file...' >=20 > opts.on('-n', '--numlines pagesize', 'Specify page size in number of li= nes') do |n| > pagesize =3D n.to_i > end >=20 > end >=20 > begin > optparse.parse! > rescue OptionParser::InvalidOption, OptionParser::MissingArgument =3D> e > puts e > puts optparse > exit 1 > end >=20 > loop do > pagesize.times do > if line =3D gets > puts line > else > exit > end > end > print "More..." > STDIN.getc > end >=20 > --=20 > Sterling (Chip) Camden | sterling@camdensoftware.com | 2048D/3A978E4F > http://chipsquips.com | http://camdensoftware.com | http://chipstips.c= om Oops -- code corrected above. --=20 Sterling (Chip) Camden | sterling@camdensoftware.com | 2048D/3A978E4F http://chipsquips.com | http://camdensoftware.com | http://chipstips.com --HWvPVVuAAfuRc6SZ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iQEcBAEBAgAGBQJNYGPwAAoJEIpckszW26+RGN4H+gIZxb1LN3fZPBSXzYR0ic0l cmo+p18mmV4WHB3JX8+Dm9jnS4qvVEsgpZNDORhm00y0vYsHc8hT4Qik6VdaIIHi yH5lEalcChioSECk2sNts0U1Bhfp9P61WOrDSDQUyReShWkQKya/phEn5XK4Fy4A 9dWZT6QPJU0Nlgm+7hPRb65CLwD4fiGqKoMdBhLoVfZG0LVdaJ8X9z5ZmecqtSdU o6SFceBZdvRcs6eBhS4ddjEEUg/t4qxRhVh3FMsSNaZrS2Pl50nyTIHMm9de+iho VsYW7NOX2Ht1qDY4wSz9gWwcaDTPDDDNxAtPwSL0VelwDOha7PJ06KA37x+nW7A= =6L3F -----END PGP SIGNATURE----- --HWvPVVuAAfuRc6SZ--
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