Hi,
I have a problem with expending variables when used in a for loop:
#!/bin/ksh
VAR1=aaa
VAR2=bbb
VAR3=ccc
for ITEM in VAR1 VAR2 VAR3
do
echo "${ITEM}"
done
This gives:
VAR1
VAR2
VAR3 (2 Replies)
Hi,
Again a little problem.
Do not understand good why an empty string is not detected.
Here is the program:
#!/bin/ksh
APR=`date | grep Apr | awk '{print $2$3}'`
MAY=`date | grep May | awk '{print $2$3}'`
JUN=`date | grep Jun | awk '{print $2$3}'`
echo "Variable Apr has value:... (6 Replies)
I am a newbie to awk and c programming, however am not a unix newbie. However, I do need help with a kshell script I am writing. It is almost complete, the last step is killing me. Any help would be greatly appreciated. What I am trying to do is cat a text file that has usernames. Then, using... (2 Replies)
Hi,
I've tried searching the forums for a case similar to mine but was unsuccessful. This is my first time to use awk so any help would be really appreciated :)
I have one file containing data for with the first value in each row being a State Name. I would need to create a separate file... (1 Reply)
Hi there,
I don't understand the following behavior:
toto:~$ for word in un "deux trois"; do echo $word; done
un
deux trois
toto:~$ sentence='un "deux trois"'
toto:~$ for word in $sentence; do echo $word; done
un
"deux
trois"
toto:~$ sentence="un 'deux trois'"
toto:~$ for word in... (10 Replies)
Hello
I am having issues with a script I'm working on developing on a Solaris machine.
The script is intended to find out how many times a particular user (by given userid) has logged into the local system for more than one hour today.
Here is my while loop:
last $user | grep -v 'sshd'... (7 Replies)
Hello folks,
I've a (perhaps) simple question.
In a text file I've :
server_name1: directory1
server_name2: directory2
server_name3: directory3
I want to make a loop that lets me connect and operate on every server:
rsh server_name1 "ls -l directory1"
I've tried with awk,... (6 Replies)
Hi Team!!
Please can anyone tell me why the following line does not work properly?
str3+=$str2
it seems that str3 variable does not keep its value in order to be concatenated in the next iteration! Thus when i print the result of the line above it returns the str2 value
What i want to do is to... (8 Replies)
Hi All,
I am new to AWK programming. I have the following for loop in my awk program.
cat printhtml.awk:
BEGIN
-------- <some code here>
END{
----------<some code here>
for(N=0; N<H; N++)
{
for(M=5; M<D; M++) print "\t" D "";
}
-----
}
... (2 Replies)
Thanks all for taking time out and reading this thread and big Thanks to all who have come forward for rescue.
Background: I have a variable "nbrofcols" that has number of columns from a data file. Now, using this count in for loop, I am trying to get the maximum length of each column present... (7 Replies)
Discussion started by: svks1985
7 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)