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Top Forums Shell Programming and Scripting Extract large list of substrings Post 302233951 by dcfargo on Monday 8th of September 2008 08:33:22 PM
Old 09-08-2008
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.


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


If that the correct command syntax?

Thanks so much.
 

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PCLOCK(1)						      General Commands Manual							 PCLOCK(1)

NAME
pclock - pixmap clock SYNOPSIS
pclock [options] DESCRIPTION
This manual page documents briefly the pclock command. This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page. pclock is a program that places a small analog clock program on the desktop of X. It was designed to run under the WindowMaker window man- ager. It uses any 64x64 pixmap as a background. OPTIONS
The programs follow the usual GNU command line syntax, with long options starting with two dashes (`-') and short optoins starting with one dash. A summary of options is included below. -B PIXMAP, --background=PIXMAP Use the given pixmap as the clock background (size must be 64x64). -H COLOR, --hands-color=COLOR Draw the hands (hour, minute and second) in the specified color. -S COLOR, --second-hand-color Draw the second hand in the specified color -h, --help Show summary of options. --hour-hand-length=INT Draw the hour hand with the specified length of INT. --minute-hand-length=INT Draw the minute hand with the specified length of INT. --second-hand-length=INT Draw the second hand with the specified length of INT. --second-hand-width=INT Draw the minute hand with the specified width of INT. -s, --second-hand Don't display the second hand. -v, --version Show version of program. -w, --withdrawn Don't start up in a withdrawn (iconic) state. AUTHOR
This manual page was written by Darren Benham <gecko@debian.org>, for the Debian GNU/Linux system (but may be used by others). The soft- ware is copyrighted (c) 1998 by and released under the GPL v2. Author: Alexander Kourakos <Alexander@Kourakos.com> Web: http://www.kourakos.com/~awk/pclock/ PCLOCK(1)
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