Linux FAQ Items Post: 302088426

3 More Discussions You Might Find Interesting

1. Post Here to Contact Site Administrators and Moderators

Unix for Dummies FAQ

I have created a small FAQ for the "Unix for Dummies" forum. Hopefully this will be useful, as there are questions which are asked (and answered) repeatedly. <A HREF="http://www.droflet.net/unix_dot_com_faq.html">http://www.droflet.net/unix_dot_com_faq.html

2. Shell Programming and Scripting

awk between items including items

OS=HP-UX ksh The following works, except I want to include the <start> and <end> in the output. awk -F '<start>' 'BEGIN{RS="<end>"; OFS="\n"; ORS=""} {print $2} somefile.log' The following work in bash but not in ksh sed -n '/^<start>/,/^<end>/{/LABEL$/!p}' somefile.log

3. Post Here to Contact Site Administrators and Moderators

Dead link in FAQ

Dead link from FAQ, then Technical FAQ: Senior Advisor - https://www.unix.com (Was about to suggest that a O/P read this FAQ).

LEARN ABOUT OSF1

ppmtopgm

ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and	pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

								   10 April 2000						       ppmtopgm(1)