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Full Discussion: How To get the data from a tag in XML File
Top Forums Shell Programming and Scripting How To get the data from a tag in XML File Post 302264462 by Christoph Spohr on Thursday 4th of December 2008 03:48:33 AM
Old 12-04-2008
@samshaw:

Perhaps you should open your own thread?

For a start try this:

Code:
HOSTS=( $(sed -n 's/^<hostAddress>\([^<]*\).*/\1/p' xfile) )

It will write the results of the sed command into an array HOSTS.

Code:
echo ${HOSTS[1]} etc.

Will give you the values.

Sed is best learned by example. There are many pages with sed one liners.
This one here does the following:

-n only print if asked to print a line
's/ substitute
^<host every line starting with host
\([^<]*\) every character except a "<" and save what you have found in "\1"
.* the rest of the line
/\1/ substitute by what we have just save in \1
p' print this line.

The command does two tasks at a time: a) it finds all lines starting with
host..., b) it extracts the value between the tags.

HTH Chris
 

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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)
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