Hi,
I am newbie in unix and just started learning it. I want to know what is the difference between an executable file and a file (say text file). How to create executable file? What is the extension for that? How to differentiate ? How does it get executed?
Thanks (1 Reply)
Hi, Im trying to take a database backup. one of the files is 26 GB. I am using cp -pr to create a backup copy of the database. after the copying is complete, if i do du -hrs on the folders i saw a difference of 2GB.
The weird fact is that the BACKUP folder was 2 GB more than the original one!
... (1 Reply)
Hi
I have two files in unix. I need to compare two files and print the differed lines in other file
Eg
file1
1111
2222
3333
file2
1111
2222
3333
4444
5555
newfile
4444
5555
Thanks In advance (3 Replies)
I am trying to find the difference in days between 2 dates.
I have to extract the 1st date from a filename, which i did using the awk command.
I have to compare this date to today's date and if the difference is greater than 30 days, do something, else do something else.
This is what i wrote... (22 Replies)
I m stuck with a issue.
I need to calculate the time difference between two files.. one on the local machine and one on the remote machine using a script.
Can any one suggest the way this can be achevied
Thanks,
manohar (1 Reply)
I have a very large system generated file containing around 500K rows size 100MB like following
HOME|ALICE STREET|3||NEW LISTING
HOME|NEWPORT STREET|1||NEW LISTING
HOME|KING STREET|5||NEW LISTING
HOME|WINSOME AVENUE|4||MODIFICATION
CAR|TOYOTA|4||NEW LISTING
CAR|FORD|4||NEW... (9 Replies)
Hi,
I am trying to find out whether there are any Unix utilities that compares folders, files and contents within the file and provides a comprehensive report. The comparison can be against base version of a folder and file with content. Can you please let me know of such a utility?
Thanks,... (6 Replies)
In the awk I am trying to subtract the difference $3-$2 of each matching $4 before the first _ (underscore) and print that value in $13.
I think the awk will do that, but added comments. What I am not sure off is how to add a line or lines that will add sum each matching $13 value and put it in... (2 Replies)
Hi All,
I want to find difference between two files and output only lines which are not present in second file .I am using awk and I am getting only the first difference but I want to get all the lines which are not present in file2 .Below is the code I am using . Please help to get the desired... (7 Replies)
Discussion started by: srinivasrao
7 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)