what can be used instead of sed, as i dont know anything about sed and rather learn shell scripting first and then look at sed, also just so i can understand this better, the random word file, needs to one word per line and numbered for this to work??
Hello, I am very new to shell scripting. This problem seems quite easy so it should be quite easy (I hope ^^)
I want to get a random file from a directory. this file will be in one subdirectory, and it will contain spaces.
code I have got so far:
N=find ./*/*.jpg | wc -l
((N=RANDOM%N))
... (6 Replies)
I need to use the $RANDOM command to get a line from a list of lines in a file randomly.
file is
help
go
three
house
film
how do i randomly get one word without looking into the file? (6 Replies)
Hi there folks,
for an exercise for my pupils (you know i am always thinking of them!) i need to randomly re-arrange the words (blank space separated) in a sentence (a line in a textfile). Any inspiration??
Txk so much. (9 Replies)
Hi
I am new to expect. Please if any one can help on my issue its really appreciable. here is my issue:
I want expect script for random passwords and random commands generation.
please can anyone help me?
Many Thanks in advance (0 Replies)
Over the last month or so my CentOS server has been crashing for reasons I do not know. It has been running for over a year with regular yum updates without problems. The load on the server is perfectly normal with CPU usage at 5-6% and RAM usage at less than half of 32GB of RAM (multiple smaller... (3 Replies)
Hi,
Could you please let me know what the following code does, I know that it means generating random numbers, however not sure what is the entire purpose.
R=$(($RANDOM % 2))
delay=$(($RANDOM % 10))
if
then
TEXT='X'
else
... (3 Replies)
Need to use dd to generate a large file from a sample file of random data. This is because I don't have /dev/urandom.
I create a named pipe then:
dd if=mynamed.fifo do=myfile.fifo bs=1024 count=1024
but when I cat a file to the fifo that's 1024 random bytes:
cat randomfile.txt >... (7 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
Write a shell script that will take the sum of two random number?
Ex: Random n1 +Random n2 = result
i tries to write it but i had some dufficulties
... (3 Replies)
Discussion started by: renegade755
3 Replies
LEARN ABOUT MINIX
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)