@kristinu
I could be off track because it is hard to follow your code, but have you read up on the Shell getopts command? It is designed to turn command line parameters into Shell variables in an orderly manner.
Just for interest, what is an "associative array" ?
As example,
In this case the user has set the cmod file. Then
Quote:
hasArgument[cmodInfile] is true
and value[cmodInfile] is set to file.cmod
getopts does not handle long options. Associative arrays let you return different values for different strings, rather than just numbered positions in the array. Associative arrays becomes quite simple like a simple array but instead of an index, one has a string to distinguish elements.
Hi;
I want to access our customer database to retreive all clients that have as language index 2 or 3 and take their client number.
My input is a file containing all client numbers.
i access the data base using a function call "scpshow". The total number of clients i want to scan is 400 000... (6 Replies)
About associative nature of awk arrays i'm still confused, not able to understand yet how array element can be accessed based on a string, I got one example at gawk manual to illustrate associative nature of awk arrays, it goes here:
Codeawk '
# Print list of word frequencies
{
for (i = 1;... (3 Replies)
Hi all,
#!/usr/dt/bin/dtksh
typeset -A wavelength
wavelength=650
wavelength=590
wavelength=510
wavelength=475
wavelength=445
wavelength=400
I have created an associative array like the one above.
Now I am trying to print the values
If i give print ${wavelength} it is... (4 Replies)
Hello,
i'm writing a little script that checks a .txt file for a specific ID that came after 9:10 am which outputs it's data to a file LateUsers.txt
once done , it should mention the following:
Number of late users
Number of unique late users
Over all late users percentage
number of... (0 Replies)
if i declare both but don't input any variables what values will the int array and file pointer array have on default, and if i want to reset any of the elements of both arrays to default, should i just set it to 0 or NULL or what? (1 Reply)
I have this piece of code. The first if statement is not working, however the second if statement is working fine.
I have set a value for Srcs to be file.srcs and want to print it.
If no value for Rcvs is set, I get the print statement correctly
hasValue="file.srcs"
if ${hasValue}; then
... (0 Replies)
Continuing my quest to learn BASH, Bourne, Awk, Grep, etc. on my own through the use of a few books. I've come to an exercise that has me absolutely stumped.
The specifics:
1. Using ONLY BASH scripting commands (not sed, awk, etc.), write a script to convert a string on the command line to... (22 Replies)
Hi,
I have the following dataset.
A 2 1 272
A 2 2 333
A 2 3 222
A 3 1 222
A 3 2 11
B 1 1 112
B 1 2 998
B 2 1 667
C 1 1 887
C 1 2 887
C 2 1 998
I need to have an associate array based on the first column and generate a auto generated number column in the last column.
Needed output:... (2 Replies)
Gents,
I did the below code to get an output (report) ,.. the code works fine but I believe it can be more shorted using better method.
Please if you can help, to generate same output improving the code , will be great.
here my code.
# get diff in time
awk '{$9=$8-prev8;prev8=$8;print... (8 Replies)
Discussion started by: jiam912
8 Replies
LEARN ABOUT REDHAT
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)