Hi ,
I am facing a problem .. which looks simple... but took 2 days of mine.. even now it is not solved completely..
I have one variable..., want to know whether that variable contains number... canbe +ve or -ve ...
Values
+35 --- number
-43 --- number
45A -- non number... (12 Replies)
Hi,
I have one file like 00123. And this file name is generated as a sequence.
So how can I confirm the generated file name is a number, not a special character or alphabets.
Can anybody help me out.
Thanks in advance. (3 Replies)
A friend of mine is switching his email from one University server to a different one. He is using the tcsh, and on his current server, the shell will tell him (when the prompt is displayed) if there is new mail. The new server, where he also has the tcsh, does not do this by default. I got him... (0 Replies)
Hi,
I have a file with data as given
$cat file1.txt
123
234
23e
234.456
234.876e
345.00
I am checking if the values are proper integers using the command.
nawk -F'|' 'int($1)!=$1 {printf "Error in field 1|"$0"\n"}' file1.txt
This is checking for only integers ( without... (10 Replies)
Hello
I have Linux Debian & tcsh shell. My mini script not run :(.
Startup script displays a message:
user@host:dir% ./test
if: Badly formed number.
script:
#!/bin/tcsh -f
#script check size files systems
set x = `df -h /usr | tail -n1 | awk '{ print( $5 ); }'`
set y = 60%
if ($x... (5 Replies)
I have 2 and three params, both I should make sure thay numbers at one single line insted of checking for each one .
Example I wroote the following way.. checking for 2 and three seperately but I shud be able to do it at on statement
echo $2 | egrep '^+$' >/dev/null 2>&1
if ; then
echo... (2 Replies)
Hi,
We are getting a curios result in one of AIX script. Its executed using !/bin/ksh .
After following line we get result of 3 in in the variable instance_count.
instance_count=`ps -ef | grep "script_check_instances.sh" | grep -v "grep" | wc -l`
But once we do a "ps -aef | grep... (2 Replies)
Hello,
May i please know how do i check if the given input argument is one of the listed numbers then success else failure. I am using bash shell.
if
then
echo "success"
else
echo "failure"
fi
Thank you. (2 Replies)
Hi,
I've to wait until a file generated and once its generated, source another script in Linux terminal.
Please help me as this is very very urgent.
The code should be something like
if ( -e "/abc/xyz/a.txt )
source aaa.csh
else
sleep
This should be repeated till the if... (4 Replies)
Discussion started by: kumar_eee
4 Replies
LEARN ABOUT V7
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)