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Full Discussion: Read record from the text file contain multiple separated values & assign those values to variables
Top Forums Shell Programming and Scripting Read record from the text file contain multiple separated values & assign those values to variables Post 302891573 by Chubler_XL on Thursday 6th of March 2014 12:25:33 PM
Old 03-06-2014
I'm guessing you referring to this line:
Code:
file_name[${#file_name[@]}]=$line

${#file_name[@]} returns the number of elements in the file_name array

i.e. zero when the array is empty; 1 when it contains 1 element; etc.

Since arrays are indexed from zero this is ideal for appending:
When it is empty we assign the first array element (i.e. element number zero)
When it has 1 element we assign the second array element (i.e. element number 1).
 

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LEARN ABOUT DEBIAN

wlancfg

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

NAME

       wlancfg - manupulate linux-wlan-ng MIB values

SYNOPSIS

       wlancfg query dev

       wlancfg show dev [all]

       wlancfg set dev

       wlancfg list

       wlancfg version

DESCRIPTION

       The  wlancfg utility program provides an alternative method to wlanctl-ng (1) , for manipulating MIB values.  It was designed to provide an
       easier mechanism for saving and restoring the complete wireless configuration (i.e. when re-starting the device driver) and  to	provide  a
       more efficient mechanism for GUI's to query multiple MIB's.

OPTIONS

       dev    The name of the device (e.g., wlan0).

       query  Read  MIB  names	(separated by whitespace) from stdin and output their values (separated by carriage returns) to stdout.  The MIB's
	      may be either read/write or read-only.

       show   Query the values of all supported read/write MIB's and output their values (separated by carriage returns) to stdout. The syntax	of
	      the output will be:
		name=value
	      If the "all" parameter is specified, then all supported MIB's (i.e. read-only MIB's as well) are output.

       set    Read MIB name/value pairs (separated by carriage returns) from stdin and set the values of the specified MIB's.  The pairs must have
	      the same syntax as above.  The MIB's must be read/write.

       list   Display a list of all supported MIB's.

       version
	      Display the compiled version of wlancfg.

SEE ALSO

       /usr/share/doc/linux-wlan-ng/README and README.Debian.

AUTHOR

       This minimal man page was written by Joey Hess.

																	WLANCFG(8)
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