Hi! Is there is any way to divide the screen when I use UNIX shells (I have RedHat 7.1)? I have to see the command promt and process some data from very long file at the same time (I work with PThreads). Some "pseudo-windows" in text mode, huh? =) Thanks in advance and don't be angry =) (4 Replies)
Hi
I know its a dumb question but can any one please explain me the difference of executing a shell script in the following 2 ways.
. script.sh
sh script.sh
I have a problem if I execute the following code as sh script.sh
DB_CNT_ALW=0.20
SCT_VAR=0.05
if ; then
echo "== Difference... (3 Replies)
Hi,
I have a situation where I need to append specific lines to a series of files only when specific lines are found. I can do this using sed -f, however because of the byte limitation for a sedscr file, I create multiple sedscr files (of 180 lines each due to the length of the strings) and do... (1 Reply)
Hi All,
I have two variables like below..
ETIMEHR =03 #END TIME HOUR
ETIMEMIN=02 #END TIME MIN
Now I'm converting the min to hour by deviding it by 60
ETIMEMINCONV=`echo "scale=2; $ETIMEMIN/60" | bc`
but when i print ETIMEMINCONV instead of getting... (6 Replies)
Hi,
I have a file containing 28048 lines and I would like to split it into a a file with 3506 lines and 8 columns?
In column 1, I would like to have the first 3506 lines, in columns 2 the second 3506 lines and so on.
I've been looking around in the forum but I found very specific cases.
Is... (1 Reply)
Hi,
I do have a very simple task to divide 2 variables and display the result.
I CANNOT use bc
when i try
var1=2
var2=4
var3=$(($var1 / $var2))
echo $var3
the output is always 0
What can I change to get a dotted decimal result such as 0.5 ?
Thanks! (5 Replies)
Hi,
I have written this code the division of two numbers and multiply it by hundred (to get the percent)
echo "script running for the 1st time"
cp value_directory_present.txt /home/mysql_cnbc/value_directory_past.txt
rm -f test6.txt value_directory_present.txt
else
y1=`awk '{print $1}'... (5 Replies)
Hi,
I have a space de-limited text file with 1000 columns. I want to divide it up into 20 text files each with 50 columns, starting from the first column. How do I go about doing that? Thanks! (2 Replies)
Hello,
I am using Awk in UBUNTU 12.04.
I have a file as follows, the first column represents the name of populations, in my real file, I have 47 populations and 2172 lines in total with about 47000 fields.
ABO_1 1 2
ABO_1 1 2
ABO_2 1 1
GPO_1 1 1
GPO_1 2 2
GPO_2 1 0
GPO_2 2 0
I want... (3 Replies)
Does anyone know how to include as a script maybe an "echo" warning that explains that if a user uses the second number "zero" when dividing, that the result will BE "zero."
I need, example: 5/0 (second number) = 0, in script form.
current script:
echo "Enter a number"
read num1
echo... (4 Replies)
Discussion started by: jefferj54
4 Replies
LEARN ABOUT OSX
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)