10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Trying to use mv in a shell script but for some reason this does not work:
for f in *.wav;do mv $f $f.bwf;done
I get this:
usage: mv source target
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This works so the contens of the folder is read... (4 Replies)
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2. Shell Programming and Scripting
Hi Forum
Im making a script that takes multiple unix users and lists the users and the groups that the user is part of. the grouplist looks like this
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3. Shell Programming and Scripting
I needed to view calendar for several months so I created a separate file for each and then pasted them like this:
cal Dec 2011 > x1;
cal Jan 2012 > x2;
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1 2 3 1 2 ... (4 Replies)
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4. IP Networking
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5. Shell Programming and Scripting
Hi,
I'm trying to copy the directories from one location(/tmp/source/) to other(/tmp/dest/).
for this I have written a PERL script.
snippet of code
$sourcePath = "/tmp/source";
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6. Shell Programming and Scripting
Hi all,
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function Makefiles
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7. Shell Programming and Scripting
I'm looking for a way in Korn shell to zero fill (or space fill) the output from df so that it will sort properly.
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8. Shell Programming and Scripting
Hi!
Can anyone tell me what went wrong in my shell script?
for dt_val in `cut -f 1 -d '|' /prod/ods/satyaki/sqlldr/grp.dat`
do
echo $dt_val
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And, the output is -
23
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9. UNIX for Dummies Questions & Answers
Hi,
I am new to UNIX and I am more used to simple commands like those in VMS.
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10. Programming
#include <stdio.h>
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struct stat s;
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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)
