Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

ppmdim(1) [v7 man page]

ppmdim(1)						      General Commands Manual							 ppmdim(1)

NAME
ppmdim - dim a portable pixmap down to total blackness SYNOPSIS
ppmdim dimfactor [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Diminishes its brightness by the specified dimfactor down to total blackness. The dimfactor may be in the range from 0.0 (total blackness, deep night, nada, null, nothing) to 1.0 (original picture's brightness). As pnmgamma does not do the brightness correction in the way I wanted it, this small program was written. ppmdim is similar to ppmbrighten , but not exactly the same. SEE ALSO
ppm(5), ppmflash(1), pnmgamma(1), ppmbrighten(1) AUTHOR
Copyright (C) 1993 by Frank Neumann 16 November 1993 ppmdim(1)

Check Out this Related Man Page

ppmshift(1)                                                   General Commands Manual                                                  ppmshift(1)

NAME
ppmshift - shift lines of a portable pixmap left or right by a random amount SYNOPSIS
ppmshift shift [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Shifts every row of image data to the left or right by a certain amount. The 'shift' parameter determines by how many pixels a row is to be shifted at most. Another one of those effects I intended to use for MPEG tests. Unfortunately, this program will not help me here - it creates too random patterns to be used for animations. Still, it might give interesting results on still images. EXAMPLE
Check this out: Save your favourite model's picture from something like alt.binaries.pictures.supermodels (ok, or from any other picture source), convert it to ppm, and process it e.g. like this, assuming the picture is 800x600 pixels: # take the upper half, and leave it like it is pnmcut 0 0 800 300 cs.ppm >upper.ppm # take the lower half, flip it upside down, dim it and distort it a little pnmcut 0 300 800 300 cs.ppm | pnmflip -tb | ppmdim 0.7 | ppmshift 10 >lower.ppm # and concatenate the two pieces pnmcat -tb upper.ppm lower.ppm >newpic.ppm The resulting picture looks like the image being reflected on a water surface with slight ripples. SEE ALSO
ppm(5), pnmcut(1), pnmflip(1), ppmdim(1), pnmcat(1) AUTHOR
Copyright (C) 1993 by Frank Neumann 16 November 1993 ppmshift(1)
Man Page

14 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

The efficiency between GREP and SED???

Hello Everyone! I am a newbie. I'd like to get key lines from a big txt file by Reg Exp, The file is nearly 22MB. GREP or SED?which may be the best choice,more efficient way? or any other best practise? Thank you in advance. Ever:) (5 Replies)
Discussion started by: ever
5 Replies

2. AIX

crontab every 5 min.

Hi running aix 6.1 oslevel 6100-07-03-1207 I need to confirm that this cron entry is set properly. I need it set for every 5 min. 0,5,10,15,20,25,30,35,40,45,50,55 * * * * /path/to/script.sh it does not appear that it is running every 5 min but it did in the beginning. (4 Replies)
Discussion started by: vpundit
4 Replies

3. Shell Programming and Scripting

Goto - UNIX v6 Manual Questions

Hey :) I am trying to understand the command goto. I have some questions regarding the goto manual. 1.What does the underlined part mean? I'm not allowed to type goto in the shell? But if goto is written into a file everything is okay? 2.So if a part of my file looks like this ... goto... (8 Replies)
Discussion started by: orbit
8 Replies

4. AIX

[Tip] HACMP 7.1.3 and DB/2-Installation

We just found out that the installation of DB/2 on a HACMP- (PowerHA-) Cluster running v7.1.3 is not possible due to a bug in HACMP. DB/2-version was 10.5 but this seems to apply to 10.1 too (and probably other versions as well). The error message the DB/2-installer issues is something like: ... (2 Replies)
Discussion started by: bakunin
2 Replies

5. Shell Programming and Scripting

Need to add prefix using sed or awk from cat the file

I need the use sed or AWK using cat the file Node1 TDEV RW 1035788 TDEV RW 1035788 Server1 TDEV RW 69053 Server2 TDEV RW 69053 TDEV RW 103579 Server3 TDEV RW 69053 server4 RDF1+TDEV RW 69053 RDF1+TDEV RW 517894 RDF1+TDEV RW 621473 server6 TDEV RW 34526 TDEV RW 34526 (22 Replies)
Discussion started by: ranjancom2000
22 Replies

6. UNIX for Beginners Questions & Answers

Sort by values in the 1st row, leaving first four coulumns untouched

Dear all, will be thankful if you can help on sort command. My data looks like (tab separated; number of columns 2317; N of rows ~200000): a b c d V10 V2 V8 V4 V7 xx z y 1000 1 2 0 2 0 tr v m 1001 0 0 1 2 2 rg s ... (7 Replies)
Discussion started by: kush
7 Replies

7. Solaris

Need help to compile and create python64 bit (2.7.9) on Solaris10

Hi, I am trying to build python(2.7.9) 64 bit from source on solaris10. Using the below to compile ./configure CFLAGS=-m64 LDFLAGS=-m64 But getting errors like below while executing make make: Fatal error: Command failed for target `libinstall' OS info: isainfo -v 64-bit amd64... (9 Replies)
Discussion started by: Sumanthsv
9 Replies

8. Shell Programming and Scripting

Read a file and save every word in a variable to use

Hello there so i have a txt file containing word like "one two three four plus four five six". I want to save every word in the file into a variable, and then use that variable to generate real numbers and apply the arithmetic value on them. example: the txt files becomes 123 + 456 and... (10 Replies)
Discussion started by: azaiiez
10 Replies

9. UNIX for Advanced & Expert Users

Required libs to compile libXft

Hello. I am looking for all the necessary packages required to be able to compile libXft. I tried to compile libXft-2.1.8.2$ and the error message was: checking for XRENDER... checking for XRENDER... checking for X... no checking X11/extensions/Xrender.h usability... no checking... (1 Reply)
Discussion started by: colt
1 Replies

10. What is on Your Mind?

Cyber Dystopia Teaser (720 HD)

Working on a new cybersecurity, dystopian world series and made a short 2 min teaser today. Cyber Dystopia (720 HD) https://www.youtube.com/watch?v=g9Ca07J_YC8 If anyone has any ideas for the story, please write out some story lines in the comments and join the production team! (1 Reply)
Discussion started by: Neo
1 Replies

11. UNIX for Beginners Questions & Answers

Linux froze and got back working 5 days later, no reboot.

Hello my friends, I've come across the weirdest of glitches. I'm running a simple weather monitor (just temperature) on a Raspbeery Pi 3B (Raspbian Linux 4.14.98-v7+). It has a 3G modem that sends out simple packets to my server at home. On june 5th I lost remote access to the device.... (1 Reply)
Discussion started by: OmahaWiz
1 Replies

12. UNIX for Advanced & Expert Users

Shopt -s histappend

What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file. # When the shell exits, append to the history file instead of overwriting it shopt -s histappend (3 Replies)
Discussion started by: cokedude
3 Replies

13. Shell Programming and Scripting

Building JSON command with bash script

Hello. I'm new to bash script and I'm learning the basics by writing some scripts. Recently a friend of mine asked me if I could try to write a script to him to automate a couple of processes that uses JSON RPCs. I'll try to explain in few words the workflow just to contextualize the problem.... (48 Replies)
Discussion started by: psysc0rpi0n
48 Replies

14. UNIX for Beginners Questions & Answers

Bash - here document on RHEL 6.8 and 6.9 servers aren't working

H Forum, I was thankful in getting help from this post that allowed me to connect to multiple severs at once using here documents to gather data into variables. But I've discovered that the same bash command that works on my RHEL 7 servers do not work on RHEL 6? What's strange about my... (4 Replies)
Discussion started by: greavette
4 Replies