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1. Shell Programming and Scripting
Hi Guys!
Unix newbie here!
Have a requirement for which I have been scouting the forums for a solution but has been out of luck so far :(
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2. UNIX for Dummies Questions & Answers
Hello all,
this is my first and probably not my last question around here. I do hope you can help or at least point me in the right direction.
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3. Shell Programming and Scripting
I have three variables $a, $b and $c
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4. Shell Programming and Scripting
Hey folks!
I am new to shell-scripting, but I have a problem that I would like to solve using a script. I create very large html forms, used for randomized trials. In these forms, each question is supplied with a variable that looks something like this: PROJECT_formNN
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5. UNIX for Dummies Questions & Answers
Hi guys
I'm new to this forum so please help me in this
I have a file where i need to replace a pattern value=' ' with the pattern value='abc'
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6. Shell Programming and Scripting
Hi
i want to search two pattern on same line and replace onther pattern..
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aaaa bbbbb nnnnnn ttttt
cccc bbbbb nnnnnn ppppp
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7. Shell Programming and Scripting
Hi All,
I have a requirement where I have to find a pattern in a file and comment the whole line containing the search pattern. Any ideas in shell is welcome.
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Need help in finding pattern then replacing pattern that contains multiple
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9. Shell Programming and Scripting
Hello All,
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10. Shell Programming and Scripting
Hello All,
Can you help me with this ,
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Sam, (6 Replies)
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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)