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Full Discussion: Struggling with arrays and delimited file
Top Forums Shell Programming and Scripting Struggling with arrays and delimited file Post 302283644 by pobman on Tuesday 3rd of February 2009 05:33:54 PM
Old 02-03-2009
Hi,

I am very confused too as I am struggling with the array syntax but really want to understand it.

to make this simpler if I had input.txt with the following text in it:
Code:
google,www.google.co.uk
bbc,www.bbc.co.uk
distrowatch,www.distrowatch.com

Then If I wanted to read this into an array and run commands on it how would this be done.

So I could get:

Code:
read sites < input.txt
{
array code
}
echo "Displaying" $array1 "Web Site"
links -dump $array1
echo "Displaying" $array2 "Web Site"
links -dump $array2
echo "Displaying" $array3 "Web Site"
links -dump $array3

How would this be done, excuse the lame example.
 

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LEARN ABOUT REDHAT

raid0run

raid0run(8)						      System Manager's Manual						       raid0run(8)

NAME

       raid0run - starts up old (superblock-less) RAID0/LINEAR arrays

SYNOPSIS

       raid0run [--configfile] [--version] [--force]	       [--upgrade] [-acvfuv] </dev/md?>+

DESCRIPTION

       raid0run  sets up a set of block devices into a single RAID0 array.  It looks in its configuration file for the md devices mentioned on the
       command line, and initializes those arrays.  raid0run only works for RAID0 and LINEAR devices, it's ment as a compatibility/migration  com-
       mand for arrays created with old mdtools.

       Note  that  initializing  RAID devices with the wrong RAID configuration file might destroy all data on the consituent devices! RAID arrays
       with superblocks are much safer and are auto-started by the kernel..

OPTIONS

       -c, --configfile filename
	      Use filename as the configuration file (/etc/raidtab is used by default).

       -a, --all
	      Starts up all nonpersistent RAID0 and LINEAR arrays defined in raidtab.  It skips all persistent or  non-RAID0/LINEAR  arrays.  This
	      switch is handy to be used in startup scripts for old installations.

       -h, --help
	      Displays a short usage message, then exits.

       -V, --version
	      Displays a short version message, then exits.

NOTES

       The  raidtools  are  derived from the md-tools and raidtools packages, which were originally written by Marc Zyngier, Miguel de Icaza, Gadi
       Oxman, Bradley Ward Allen, and Ingo Molnar.

BUGS

       no known bugs.

SEE ALSO

       raidtab(5)

																       raid0run(8)
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