9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
How does unix system administration, unix programming, unix network programming differ?
Please help. (0 Replies)
Discussion started by: thulasidharan2k
0 Replies
2. Programming
hey guys.
im currently trying to make a program in unix (redhat, compiling the .c file using gcc) and i need urgent urgent help.
i need to save objects of structures in a file but they dont seem to be saving properly. ive been on it for a whole day now. dunno why i cant do it.
when i try to... (4 Replies)
Discussion started by: mjumrani
4 Replies
3. UNIX for Dummies Questions & Answers
I asked this over on the "High Level Programming Section" but there must be a secret handshake or something that I am missing.....anyway....if a person wanted to start some C programming in UNIX what would be the best compiler to start with ??
I am fairly familiar with visual studio and have done... (2 Replies)
Discussion started by: zapper222
2 Replies
4. UNIX for Dummies Questions & Answers
Hello,
I am trying to learn Networking Programming in C in unix enviorment. I want to know how good it is to become a network programmer. i am crazy about Network programming but i also want to opt for the best carreer options. Anybody experienced Network Programmer, please tell me is my... (5 Replies)
Discussion started by: vibhory2j
5 Replies
5. Shell Programming and Scripting
Several months ago I found a link that explained the difference between how a Unix Systems Admin would do scripting compared to what a Unix Programmer would do.
It showed a basic script and then show several iterations that explained how the Systems Admin would change it to make it better. I was... (0 Replies)
Discussion started by: BCarlson
0 Replies
6. UNIX for Dummies Questions & Answers
hi guys,
I m from india. I m working as programmer in one of MNC. Since 3 years im working on Microsoft platform on dot net and platforms.
but now i decided to shift my future to unix , Linux side. I want to be the part of this open source family.
and with this i want to make my future also.... (6 Replies)
Discussion started by: d_swapneel14
6 Replies
7. UNIX for Advanced & Expert Users
hi guys,
I m from india. I m working as programmer in one of MNC. Since 3 years im working on Microsoft platform on dot net and platforms.
but now i decided to shift my future to unix , Linux side. I want to be the part of this open source family.
and with this i want to make my future also.... (3 Replies)
Discussion started by: d_swapneel14
3 Replies
8. Programming
i would like advice on the usbject of c programming (in the middle of reading a book on C). could i benefit more if i apply that knowledge in the unix format if i were able to, or would that take the point out of learning C, basically I want to stay away from strying too far away from unix and use... (1 Reply)
Discussion started by: moxxx68
1 Replies
9. UNIX for Dummies Questions & Answers
can someone tell me some programming commands on unix? (2 Replies)
Discussion started by: fretis
2 Replies
ppmtosixel(1) General Commands Manual ppmtosixel(1)
NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS
-raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO
ppm(5)
AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)
