Sponsored Content
Full Discussion: question about files?
Top Forums UNIX for Dummies Questions & Answers question about files? Post 44696 by Neo on Tuesday 9th of December 2003 10:51:06 PM
Old 12-09-2003
Perfect, something like:

Code:
cat /dev/zero | dd of=test.file bs=20000

Thanks!

Not sure how to make 20MBs from this Smilie Perhaps someone can assist? I tried bs=20000 but it was HUGH!!! Much bigger than 20MB!!!!

Neo
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Question: Removing Files Using du

I want to identify files that have zero length, bascially files that are 0 byte in size. Then remove those files that are found using du. I wanted to do this in a way that, let's remove 0 size jpg files: foreach f (*jpg) du $f end This will only list the size and file name, I wanted... (4 Replies)
Discussion started by: ApprentiSorcier
4 Replies

2. Shell Programming and Scripting

Compare files question

Hi all, How do I compare contents of entire two files except for the first line is each of them? I am sure first lines from both my files are going to be different so I want to ignore them. Is there a easier way than creating temporary files by cutting out the first line and then comparing... (1 Reply)
Discussion started by: jakSun8
1 Replies

3. UNIX for Dummies Questions & Answers

listing files question

hello im new to linux programming trying to list files in a directory i current have the code to list all the files but i do not want the hidden files to show such as a file named .openoffice.org2.0 for example, can anyone help me or point me in the right direction #include <sys/types.h>... (2 Replies)
Discussion started by: Fortune
2 Replies

4. Shell Programming and Scripting

question using grep with files

hi, i'm trying to figure out how to use grep in different ways in bash.. lets say you have two files, one with a list of words and the other with text i want to go through the list of words in one file and for each word, find every occurrence of that word in the other file and display... (1 Reply)
Discussion started by: kratos.
1 Replies

5. Shell Programming and Scripting

Simple bash question - 2 files together

Hello Friends, I have a simple problem but I can't seem to find a solution, perhaps you could gimme a hand here.. I have to files 1.txt which contains the following 00 01 02 03 and 2.txt which contains the following: 20 21 22 23 All I need is to concatenate these 2 files in... (2 Replies)
Discussion started by: bashshadow1979
2 Replies

6. UNIX for Dummies Questions & Answers

Please help Question about Excel Files and Unix

Hello I have an excel file , it has 4 tabs , each having specific details for example it has a customer tab , it has a payments tab and it has an address tab Question is How do I seperate each of these tabs and load them into 3 different excel files Using Unix That is the... (2 Replies)
Discussion started by: arnab1978
2 Replies

7. Solaris

Question about copying files in Solaris

Hi everyone, What is the Solaris equivalent of cp -u? I'm copying files from one directory to another, and I'd like to only copy files which are newer. Thanks! (4 Replies)
Discussion started by: Fatbob
4 Replies

8. Shell Programming and Scripting

Bash script deleting my files, and editing files in subdirectories question

#!/bin/bash # name=$1 type=$2 number=1 for file in ./** do if then filenumber=00$number elif then filenumber=0$number fi tempname="$name""$filenumber"."$type" if (4 Replies)
Discussion started by: TheGreatGizmo
4 Replies

9. Shell Programming and Scripting

Bash Looking into files question

I have a bunch of files that are messages in my directory. Each message has a date located in the file. How can I look into each file and find the date? Thank you for any help (7 Replies)
Discussion started by: totoro125
7 Replies

10. Shell Programming and Scripting

Question on awk source files

Im repeating same command to get count, filename from 4 different files, writing to one same file. awk 'END{print NR"|"FILENAME}' file.txt >> temp.txt; awk 'END{print NR"|"FILENAME}' asdf.txt >> temp.txt; awk 'END{print NR"|"FILENAME}' lkjh.txt >> temp.txt; awk 'END{print NR"|"FILENAME}'... (12 Replies)
Discussion started by: JSKOBS
12 Replies
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)
All times are GMT -4. The time now is 10:26 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy