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Full Discussion: Kill a list of processes
Top Forums UNIX for Advanced & Expert Users Kill a list of processes Post 302919868 by RudiC on Sunday 5th of October 2014 04:49:49 AM
Old 10-05-2014
Quote:
Originally Posted by cokedude
Yep thats it Smilie. Thank you. I wasn't familiar with that $() trick. Where can I read more about things like that?
man bash (or whatever your shell be) is your friend:

Quote:
Command Substitution
Command substitution allows the output of a command to replace the command name. There are two forms:

$(command)
or
`command`
Quote:
Originally Posted by cokedude
. . .
Can you please explain this part? I don't understand the purpose of a "~" here and why you had to the a.out in "//" . Would bash try to expand the "." if you didn't "\" it?
. . .
man awk is your friend:
Quote:
5. Expressions and operators
The expression syntax is similar to C. . . .

New expressions are composed with the following operators in order of increasing precedence.

assignment = += -= *= /= %= ^=
.
.
.
matching ~ !~
.
.
.
 

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LEARN ABOUT OSX

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)
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