04-14-2011
8 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
How can I know that my FreeBSD OS has commands mkdir or mkfile?
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But I do not see them???
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Hi All,
I trying to get my head around using the find command and i wanted to list a selection of files that are older than 30 days. i used 'find . -mtime +30' and it lists all the files including other files from the current location's sub directory. i then used the prune option but it seems it... (5 Replies)
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Yes , I have to find a file in unix without using any find or where commands.Any pointers for the same would be very helpful as i am beginner in shell scritping and need a solution for the same.
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I need help with tweaking the unix find command. currently the find command searches all the directories under $div/users modified in the last 1 day.
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I need this changed to find only subdirectories and sub-subdirectories modified in the last 1 day under... (1 Reply)
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6. Shell Programming and Scripting
I need help with tweaking the unix find command. currently the find command searches all the directories under $div/users modified in the last 1 day.
find $div/users -type d -mtime +1
I need this changed to find only subdirectories and sub-subdirectories modified in the last 1 day under... (3 Replies)
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8. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
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LEARN ABOUT XFREE86
ppmtosixel
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)