Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

pgmhist(1) [ultrix man page]

pgmhist(1)						      General Commands Manual							pgmhist(1)

pgmhist - print a histogram of the values in a portable graymap SYNOPSIS
pgmhist [pgmfile] DESCRIPTION
Reads a portable graymap as input. Prints a histogram of the gray values. SEE ALSO
pgmnorm(1), pgm(5), ppmhist(1) AUTHOR
Copyright (C) 1989 by Jef Poskanzer. 28 February 1989 pgmhist(1)

Check Out this Related Man Page

ppmhist(1)						      General Commands Manual							ppmhist(1)

ppmhist - print a histogram of a portable pixmap SYNOPSIS
ppmhist [-hexcolor] [-noheader] [-map] [-nomap] [-sort={frequency,rgb}] [ppmfile] DESCRIPTION
Reads a PPM image as input. Generates a histogram of the colors in the image, i.e. a list of all the colors and how many pixels of each color are in the image. OPTIONS
-sort={frequency,rgb} The -sort option determines the order in which the colors are listed in the output. frequency means to list them in order of how pixels in the input image have the color, with the most represented colors first. rgb means to sort them first by the intensity of the red component of the color, the of the green, then of the blue, with the least intense first. The default is frequency. -hexcolor Print the color components in hexadecimal. Default is decimal. -noheader Do not print the column headings. -map Generates a PPM file of the colormap for the image, with the color histogram as comments. -nomap Generates the histogram for human reading. This is the default. SEE ALSO
ppm(5), pgmhist(1), ppmtomap(1), pnmhistmap(1), ppmchange(1) AUTHOR
Copyright (C) 1989 by Jef Poskanzer. 17 September 2000 ppmhist(1)
Man Page

5 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

A short history of UNIX by

<h1>A short history of UNIX</h1> <p>In the late 1960's Ken Thompsom joined the computing-science research group at Bell Laboratories, which is the research arm of the giant American corporation ATT. He and many colleagues had been collaborating with MIT and GE on the development of an... (0 Replies)
Discussion started by: Neo
0 Replies

2. Answers to Frequently Asked Questions

Lost root password / Can't login as root

We have quite a few threads about this subject. I have collected some of them and arranged them by the OS which is primarily discussed in the thread. That is because the exact procedure depends on the OS involved. What's more, since you often need to interact with the boot process, the... (0 Replies)
Discussion started by: Perderabo
0 Replies

3. Programming

How do you detect keystrokes in canonical mode?

I'm writing a command shell, and I want to be able to detect when the user presses an arrow key (otherwise it just prints [[A, [[B, etc.). I know it's relatively easy (although somewhat more time-consuming) to detect keystrokes in noncanonical mode, but I've noticed that the bash shell detects... (4 Replies)
Discussion started by: Ultrix
4 Replies

4. UNIX for Dummies Questions & Answers

Linux (Ubuntu) = Unix (NOT IMPORTANT - NO RUSH)

I'm learning off Linux (Ubuntu) right now. I want to move up to Unix, but I don't want to rush like I did when it came to Windows --> to Linux. What is the best Unix OS that fits in pretty well with Ubuntu. In other words is there kind of an equal Linux with Unix? Also what do I need to... (10 Replies)
Discussion started by: Linux_Guy
10 Replies

5. IP Networking

Can I change my hostname without messing things up?

I noticed my hostname is <my-full-name>s-macbook.local. I'm not sure exactly what information leaves the local network, and whether the hostname is included, but if it is, this would mean people on the Internet can look at my hostname and see who I am. Before anyone says that's not possible,... (4 Replies)
Discussion started by: Ultrix
4 Replies