I am using the code below to write a command to launch a script only if the number of users on the system is less than 10. The code below isn't working. Any suggestions? HELP..
if && ; then frizzle ; fi (3 Replies)
Hi there - am newish to shell scripting and would appreciate some advice on this...
Am trying to use what I have seen called 'compound variables' in other langs but with no success in my shell script. This is the kind of thing I'm trying to do:
base_val=123
stop=3
x=1
while
do
... (3 Replies)
Using bash, I'm trying to read a .properties file (name=value pairs), assigning an indirect variable reference for each line in the file.
The trick is that a property's value string may contain the name of a property that occurred earlier in the file, and I want the name of the 1st property to... (5 Replies)
I'm trying to write a script using the 'find' command and it's -exec option to run a compound command against the files found.
Example:
find . -name "*.conf" -exec cat {} | grep "#" > /tmp/comments.list \;
Of course the above doesn't work. So I experimented for a bit to see if there was... (6 Replies)
how can i use two or multiple statements in the if part
of an awk code
for example
i want to check two flag if they are true i will write some print
operations and increase the counter.
here is the c version of the code that i want to write:
counter=0;
if (flag1==1 && flag2==0) {... (7 Replies)
in a text " Korn Shell Unix programming Manual 3° Edition"
i have found this sintax to declare a compoud variable:
variable=(
fild1
fild1
)
but this sintax in ksh and sh (HP-UNIX) not work...
why?? exist another solution for this type of variable ??? (5 Replies)
I am writing a Bash script that will either clone a database or setup a standby database. So Parameter 2 will be the operation type. If the value is not clone or standby I want to throw an error message. I suppose I can also do a case block. So far i have been unable to get the syntax working... (1 Reply)
Hello,
Here is my problem using KSH
I have a set of compound variables, let say cmp_var1 cmp_var2
The names of these variables are stored in an indexed array.
How can I access the subfields of these compound variables ?
I tried:
set -A cmp_varnames=(cmp_var1 cmp_var2)
for cmp in... (4 Replies)
Discussion started by: luky55
4 Replies
LEARN ABOUT DEBIAN
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)