Matching the [] characters

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Grep with ... matching more than 3 characters

I am trying to understand what the grep command in ubuntu is trying to do here. The contents of my test file is given below harsha@harsha-H67MA-USB3-B3:~/Documents$ cat data abcd efghi jklmno pqr stuv wxyz When I grep for 3 dots (...) without the parenthesis as follows I would expect the...

2. Programming

Matching first n characters in a line in a file

hi to all, i am writing a simple file program in C which has to take a string of length n as input and match that input string with first n character of the line in file. if it does not match it has to compare with first n characters of next line. i am finding it difficult to know how exactly to...

3. Shell Programming and Scripting

Matching a pattern 250 characters up and down stream

hii all i have a file a which contains some thing like this strand smthg position + yyx 3020 - yyw 10,000 now i have another file (file2) which contains the data starting from 1 to n positions i want to refer first file if + ...

4. Homework & Coursework Questions

Matching and Replacing Characters

I need to write an Unix script to report the number of SQL files in my home directory, ending with .sql . The script should, also, be checking whether there is a file with an underscore in its name. If that is the case, the underscore should be converted to a dash (‐); for example...

5. Homework & Coursework Questions

Check 2 variables for matching characters

hi i am writing a hangman script and am having trouble checking the correct letters against the word i need the script to compare the word against the letters guessed that are correct so once all the letters within the word have been guessed it will alow me to create a wining senario this must...

6. Shell Programming and Scripting

Help with checking that 2 variables contain matching characters

7. UNIX for Dummies Questions & Answers

Matching numbers of characters in two lines

Dear all, I'm stuck on a certain problem regarding counting the number of characters in one line and then adjusting the number of characters of another line to this number. This was my original input data: @HWI-ST471_57:1:1:1231:2079/2...

8. Shell Programming and Scripting

Matching a pattern between two characters (sed)

Hi there, I have a file with lines like these: 0105:ffff0000:001b:01f4:25:434 0299:ffff0000:0009:01f4:2:319 02d2:ffff0000:000e:01f4:2:507 The above values are split up using ":" characters. I would like capture each value, no matter what length. Take for example the first line...

9. UNIX for Dummies Questions & Answers

pattern matching w/ unexpected characters

how do i check if the first character is a parenthese in pattern matching? if ] obviously doesnt work. How do I use it to compare so it doesnt try to use it to group.

10. UNIX for Dummies Questions & Answers

matching characters between strings

please send the logic or program to find the matching characters between two strings for ex string1 :abc string2 :adc no .of matching characters is 2(a,c)

LEARN ABOUT REDHAT

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)

UNIX for Dummies Questions & Answers