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Full Discussion: Need help with simple Linux commands - NEWBIE here!
Top Forums UNIX for Dummies Questions & Answers Need help with simple Linux commands - NEWBIE here! Post 302595523 by loverangerguy on Friday 3rd of February 2012 11:00:53 AM
Old 02-03-2012
Error Need help with simple Linux commands - NEWBIE here!
Hey guys, I need help with simple unix commands. I'm a newbie to Unix and don't know these commands. Any help is appreciated.
Code:
 1.      Logon to Linux.
   
  2.      Create a directory "Unix" under your home directory.

Command(s): ………………………………………….
 
 
  3.      Create four sub-directories bin, conf, docs and data under the directory 
"Unix" created by you in step 2. See the directory diagram below:

  Command(s): ………………………………………….
 
 
  4.      Create the document called “sed-info” in your "Unix" directory using touch command.
 
 
  Command: ………………………………………….
 
 
  5.      Create the document called “join-info” in your "Unix" directory using touch command.

Command: ………………………………………….
 
 
  6.      While in the Unix directory, move the files "sed-info" and "join-info" to directory “docs” using a single UNIX command.

Command: ………………………………………….
 
 
  7.      Change to your home directory.

Command: ………………………………………….
 
 
  8.      Use a single command to rename and move the “sed-info” from the “docs” directory to the “bin” directory.
   
  Command: ………………………………………….
 
 
  9.      Change to the data directory.
   
  Command: ………………………………………….
 
 
  10.  While in the data directory create a command that would copy the “sed-info” from the “bin” directory and “join-info” from the docs directory to the “conf” directory using a) absolute paths and b) relative paths.
   
  Command (relative path): ………………………………………….
   
  Command (absolute path): ………………………………………….
   
  11.  Move to your home directory. Create a single command that would delete the Unix directory and all the files and subdirectories of the Unix directory.
   
  Command: ………………………………………….

 

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LEARN ABOUT OSX

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)
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