Hi I m creating a file which will serve as a virtual harddisk .
I m using following command to create a file.
I have following doubts regarding the operation.
1) In above example i m creating a file with byte size of 1M .However in windows O/S (Not sure about linux here) whenever a new partition is formatted the default size will be 4096 bytes.
2) According to my assumption it doesn't make any difference as OS is anyway going to format it using mkfs.(whatever filesystem we specify).
Correct me if i m wrong.
Hi all,
i need to write an ls command which will pick up
ind_01.txt/pak_01.txt from
ind_01.txt
pak_01.txt
usa_01.txt
files in a directory..
i wrote a ls command by storing ind and pak in 2 variables and listing it. Its working fine. But the pattern to be matched should be sent in... (1 Reply)
Hi can anyone tell me what command should i use to find the files which have been created within 24hrs in / .
I tried with this
find mtime 24 /
But its not working. Pls let me know to solve the issue. (3 Replies)
Hi All,
I search the forum for my query, Glad that got solution to it. But i really want to understand how does this command work.
sed -e ':a' -e 's/\("*\),\(*"\)/\1~\2/;ta'
Basically it is replacing all the comma(,) characters in between quotes with a tilde.
Specially what does ':a' ,... (2 Replies)
Hi,
I'm a complete noobie at UNIX and have hit a problem.
I'm using the 'Talend' ETL tool to try and extract flat files from UNIX on a weekly basis.
The dates are maintained in a control table and the appropriate folder has been mounted.
I am using a component in 'Talend' which enable... (1 Reply)
#!/bin/bash
perl -nle'
/(?:date|time|ref)/ and print join " ", /(?:date|time|ref)+/g
or print
' inputfile
Problem I have is that I want to delete words that are on the line of the 3 words above (date, time, and reference). However, I do not want to delete the words... (9 Replies)
Lets say I have 100 files. in those files I need to search specific word and I want to tar all those files at once. how can I do that?tar -cvf test.tar |grep house *.*Will it work?
Please wrap all code, files, input & output/errors in CODE tags.
It makes them easier to read and preserves... (2 Replies)
guys im new here and i need help with some linux commands.
filea has keyword on each line
identity
aaa
bbb
ccc
i have following commands.
egrep 'www.identity' ~/home/m3 >~/home/lopo2
wc -l file ~/home/lopo2
say lopo2 has 44 lines
then output saved is
identity 44 (1 Reply)
The 'env' command prints out all of the environment variables and their values.
Come up with a command that prints a list of environment variables whose names
end with either 'NAME', 'DIR' or 'PATH'.
What I've tried.
$ env | grep ''
Although it highlights the part of the variables... (8 Replies)
Discussion started by: edujs7
8 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)