01-21-2003
Quote:
Originally posted by Neo
Q.6's answer is "all of the above"
I got 9/10 and also answered w to (6) wrongly.
Why can ps show whether a user is connected?
8 More Discussions You Might Find Interesting
1. Post Here to Contact Site Administrators and Moderators
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 (0 Replies)
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2. UNIX for Dummies Questions & Answers
í have no idea how to write a script. can someone help? how would i write a script that will do the following commands
mkdir temp
cp * temp
cd temp
ls
i want to be able to do a set of commands by typing in only one command. i´m a windows user that is trying to learn unix, finally :P so... (6 Replies)
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3. Shell Programming and Scripting
Hi all.
iam new to this and i want to learn perl
Any good website out there ??
anything will do
thanks
:( (1 Reply)
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4. UNIX for Dummies Questions & Answers
Hi,
I just started studying AI at the university of amsterdam and I heard there is some basic UNIX test which is available online. Well, if any of you knows a link to that test I would truely appreciate it.
Thanks a lot,
L (1 Reply)
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5. Solaris
Is there one command that will display all system information on a Solaris host running Solaris 8? System information such as model, memory, CPU, disk space etc. etc. (2 Replies)
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6. Shell Programming and Scripting
This is the code:
while test 1 -eq 1
do
read a
$a
if test $a = stop
then
break
fi
done
I read a command on every loop an execute it.
I check if the string equals the word stop to end the loop,but it say that I gave too many arguments to test.
For example echo hello.
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7. Shell Programming and Scripting
How to check weather a string is like test* or test* ot *test* in if condition (5 Replies)
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8. UNIX for Dummies Questions & Answers
Please help to answer some highlighted question below.
1. How to create more than 1 partition in a single hard disk?
2. How to format the created partition to be viewable like in windows C: or D: ?
3. How to use pen drive in unix environment?
4. How to find a file starting with... (8 Replies)
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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)