ok im doing this in a normal shell. i need to check the file in the script. how should i write the if else statment?
if the filesize contains 0kb then it will echo out file contains nothing
else if the script contains more than 0kb then it will echo out file exist.
any one care to help?... (3 Replies)
Hi All
I have written the following script:
#!/bin/ksh
while read cmdline
do
echo `$cmdline`
pid="$cmdline"
done<commands.txt
===========
commands.txt contains:
ps -ef | grep abc | grep xyz |awk '{print $2};
My objective is to store the o/p of the command in a variable and do... (8 Replies)
Hi,
my script is setting a variable with value and this variable is present in my another command that is coming from external file and this command is internally called after this variable is set. but while execution of this command, the value is not retrieved properly.
say,
my script... (5 Replies)
Hi.
I'm new here, and I'm trying to enter this big world of unix.
I would like to know how can I install a SSH server for free so I can teste some things, like make a file, change files, rename and things like this?
If is there any easy way to test all commands it would be interesting too.
... (10 Replies)
Hi,
I would like to ask if someone know how to test a files if exist the file is a nfs mount ufsdump archive file..
i used the test operator -f -a h almost all test operator but i failed
file1=ufs_root_image.dump
|| echo "files doesn't exist && exit 1
the false file1 is working but... (0 Replies)
Need unix commands to delete records from one file if the same record present in another file...
just like join ... if the record present in both files.. delete from first file or delete the particular record and write the unmatched records to new file..
tried with grep and while... (6 Replies)
Hi,
I have a problem where i have to hit multiple URL that are stored in a text file (input.txt) and save their output in different text file (output.txt) somewhat like :
cat input.txt
http://192.168.21.20:8080/PPUPS/international?NUmber=917875446856... (3 Replies)
First two days of shell scripting... I've looked at awk/sed and man sed only to get off into the weeds of complexity that may not be needed here...
hints for awk or sed or other method to magically change the bolded item below?
Nutshell: HFTST=Y #test mode = true to false & back again so... (0 Replies)
Hi I want to read a text file and replace various number of spaces between each string in to a single "," or any other character .Please let me know the command to do so. My input file is a txt file which is the output of a SQL table extract so it contains so many spaces between each column of the... (2 Replies)
Discussion started by: Hari Prasanth
2 Replies
LEARN ABOUT LINUX
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)