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Full Discussion: Extract large list of substrings
Top Forums Shell Programming and Scripting Extract large list of substrings Post 302233952 by cfajohnson on Monday 8th of September 2008 08:42:03 PM
Old 09-08-2008
Quote:
Originally Posted by dcfargo
Thanks. Let me see if I understand.

The string has no space or line breaks its just millions of characters one after the other. We'll call that 'filestring'.

The numbers lists are in 'filenumbers' in the same directory.

Code:
string=$( <filestring )
while read start length
do
  printf "%s\n" "${string:$start:$length}"
done < filenumbers > outfile

If that the correct command syntax?

That is correct if the string is in a file called filestring.

If it is already in a variable, use that variable instead of string
 

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icns2png

ICNS2PNG(1)							   User Commands						       ICNS2PNG(1)

NAME

       icns2png - convert Mac OS icns files to png images

SYNOPSIS

       icns2png [-x|-l] [options] [file ... ]

DESCRIPTION

       icns2png extracts images from mac .icns files, and exports them to png format.

OPTIONS

       -l, --list
	      List the contents of one or more icns images

       -x, --extract Extract one or more icons to png images

       -o, --output
	      Where to place extracted files. If not specified, icons will be extracted to the same path as the source file.

       -d, --depth
	      Sets the pixel depth of the icons to extract. (1,4,8,32)

       -s, --size
	      Sets the width and height of the icons to extract. (16,48,etc) Sizes 16x12, 16x16, 32x32, 48x48, 128x128, etc. are also valid.

       -h, --help
	      Displays this help message.

       -v, --version Displays the version information

EXAMPLES

       icns2png -x anicon.icns		  # Extract all icon found in anicon.icns
       icns2png -x -s 48 anicon.icns	  # Extract all 48x48 32-bit icons
       icns2png -x -s 32 -d 1 anicon.icns # Extract all 32x32 1-bit icons
       icns2png -l anicon.icns		  # Lists the icons contained in anicon.icns

AUTHOR

       Written by Mathew Eis

COPYRIGHT

       Copyright (C) 2001-2008 Mathew Eis
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

icns2png 1.5							    March 2008							       ICNS2PNG(1)
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