Hi There,
I've written a script that processes a data file on our system. Basically the script reads a post code from a list file, looks in the data file for the first occurrence (using grep) and reads the line number. It then tails the data file, with the line number just read, and outputs to a... (3 Replies)
I'm trying to find a command which will allow me to remove a range of lines (2-4) from a .dat file from the command line without opening the file.
Someone mentioned using the ex command?
Does anyone have any ideas?
thanks (6 Replies)
Hi Gurus,
I'm a little new to UNIX. How can I do remove the first and last line in a file? Say, supppose I have a file as below:
1DMA
400002BARRIE
401002CALGARY/LETHBRI
402002CARLETON
500001PORTLAND-AUBRN
501001NEW YORK, NY ... (1 Reply)
Hi Gurus,
I'm a little new to UNIX. How can I do remove the first and last line in a file? Say, supppose I have a file as below:
Code:
1DMA
400002BARRIE
401002CALGARY/LETHBRI
402002CARLETON
500001PORTLAND-AUBRN
501001NEW YORK, NY
502001BINGHAMTON, NY ... (2 Replies)
Hi
I have many files all with 1 field per line as in
12345
abcde
john.paul.net
6789101
how do I remove ceratin lines from these files.
Have tried sed but sed wrecks my head!
Many thanks in advance for any help (9 Replies)
Hi folks, I have a long string of DNA sequences, and I need to remove several lines, as well as the line directly following them. For example, here is a sample of my starting material:
>548::GY31UMJ02DLYEH rank=0007170 x=1363.5 y=471.0 length=478... (1 Reply)
Hi,
I have a linux server that was hacked and I have a bunch of files that sporadically contain the following lines through out the file:
<?php eval(base64_decode("Xxxxxxxxxxxxxx/xxxxxxxx"));
I did't put the exact lines of the file in this post. The "Xxxx" are random letters/numbers.... (8 Replies)
GM,
I have an issue at work, which requires a simple solution. But, after multiple attempts, I have not been able to hit on the code needed.
I am assuming that sed, awk or even perl could do what I need.
I have an application that adds extra blank page feeds, for multiple reports, when... (7 Replies)
I have a file `/tmp/wrk` containing filenames with paths. I want to remove filenames
from this file, for example
remove all filenames containing alja cagr cavt clta cmdo or corl
remove all filenames containing data for days in region `d.2016.001` to `d.2016.207`
remove all filenames... (10 Replies)
Discussion started by: kristinu
10 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)