i'm trying to learn unix and i posted a question and what i was typing from school. i can't figure it out. how am i supposed to learn , when i get shutdown by an admin. for posting a homework question. doesn't make any sense. its a dumb rule. thanks for helping (4 Replies)
Folks,
I've been trying to use the ENV variable with slashes(/) in its value inside the sed substitution..
Sed 's/myval/'$MYVAL'/' file1 >> file.tmp
If MYVAL=<sometext>, it works.
if MYVAL=/home/venkat, it doesnt.
***************************
bash-2.05$ export VAL=/home/venkat... (5 Replies)
@xray =~ s/^ *//g;
@xray =~ s/ *$//g;
@xray =~ s/\s+/ /g;
Guess I have a two part question ...
First
Is there a way to make substitutions, remove leading spaces, trailing spaces, and crunch multiple spaces into a single space, to the entire array, or must the substitutions be done on on... (1 Reply)
I have lines like:
Mg2.qns W=0.175u
Mg2.qpsb W=0.175u
Mg4.qns W=0.175u
Mg4.qpsb W=0.175u
Which I need to become:
Mg2.qns W=wmg2qns
Mg2.qpsb W=wmg2qpsb
Mg4.qns W=wmg4qns
Mg4.qpsb W=wmg4qpsb
To acheive this individually line by line I use a command like:... (3 Replies)
Dear All
i am getting "bad substituion" error in the follwing piece of code when i run from crontab.however it works if i run directly from my machine.
#!/bin/bash
for i in `cat abc`
do
part1=${i:0:12} ;
part2=${i:13:27} ;
echo "$part1,$part2">> def
done (1 Reply)
Hey forum,
I have a problem with a script what used to work, but suddenly is not working anymore. I have been trying different things for an hour now and I give up :D .
#!/bin/sh
asukoht=`pwd`
template=$1
for values in... (4 Replies)
Okay so I am just starting programming c++. I just started started to red "C++ for Dummies yesterday and theres a lot of things I do not understand from this book and this source code especially. I will first post the full source code and then post questions about certain thing, usually what they... (2 Replies)
I have a file with 20 blank spaces.
I want to substitute each blank space for a string, and part of that string should include an incremental number
Code
while read line3
do
awk -v var=${line3} '{i=var; sub("^]*$", "\\&\n@target G0.S"'$i'"\n@type xy"); print $0}'... (1 Reply)
I am trying to begin to troubleshoot this perl error that I keep getting, yet I get output is produced. The error is Use of uninitialized value in join or string line 175, <MANNO> line 7138 and below is line 175:
I am not too sure what the error is but since not every line has an error on it, I... (1 Reply)
Discussion started by: cmccabe
1 Replies
LEARN ABOUT SUNOS
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)