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Full Discussion: Passing values from file into array in Bash
Top Forums UNIX for Dummies Questions & Answers Passing values from file into array in Bash Post 302732077 by ShiGua on Friday 16th of November 2012 02:04:27 PM
Old 11-16-2012
Passing values from file into array in Bash
Hi,

I'm trying to write a bash script that takes a file and passes each line from the file into an array with elements separated by column.

For example:

Sample file "file1.txt":

Code:
1 name1 a first
2 name2 b second
3 name3 c third

and have arrays such as:

Code:
line1 = ( "1" "name1" "a" "first" )
line2 = ( "2" "name2" "b" "second" ) 
line1 = ( "3" "name3" "c" "third" )

I'd also like to know if it's possible to pass each column of values into its own array, such as:

Code:
column1 = ( "1" "2" "3" )
column2 = ( "name1" "name2" "name3" )
column3 = ( "a" "b" "c" )
column4 = ( "first" "second" "third" )

Thank you!
Last edited by Scrutinizer; 11-16-2012 at 11:01 PM.. Reason: code tags
 

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LEARN ABOUT OPENSOLARIS

net_instance_notify_register

net_instance_notify_register(9F)			   Kernel Functions for Drivers 			  net_instance_notify_register(9F)

NAME

       net_instance_notify_register, net_instance_notify_unregister - add/delete a function to be called for changes to an instance

SYNOPSIS

       #include <sys/hook.h>
       #include <sys/neti.h>

       int net_instance_notify_register(net id_t net_id,
	    hook_notify_fn_t *callback, void *arg);

       int net_instance_notify_unregister(net id_t net_id,
	    hook_notify_fn_t *callback);

       typedef int (* hook_notify_fn_t)(hook_notify_cmd_t command,
	    void *arg, const char *name1, const char *name2, const char
	    *name3);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       netid	   value from either callback registered with net_instance_register() or net_zoneidtonetid().

       callback    function to call when a change occurs.

       arg	   pointer to pass into the callback() function when a change occurs.

DESCRIPTION

       The  net_instance_notify_register()  function  registers  a  function  represented by the pointer callback to be called when there is a new
       instance added or removed from the given network instance (represented by netid.)

       The net_instance_notify_unregister() function indicates that there is no longer any desire  to  receive	notification  of  changes  to  the
       instance through function calls to the specified callback.

       Multiple  callback  functions may be registered through this interface. The same set of parameters is passed to each callback function. The
       memory referenced through the pointers passed to the callback should be treated as pointing to read-only  memory.  Changing  this  data	is
       strictly prohibited.

       The function that is called must not block any other events.

       The arguments passed through to the callback are as follows (the command is either HN_REGISTER or HN_UNREGISTER):

       name1	is the netid represented as a string.

       name2	is NULL.

       name3	is the name of the instance being added/removed

RETURN VALUES

       If these functions succeed, 0 is returned. Otherwise, the following error is returned:

       EEXIST	 the given callback function is already registered.

CONTEXT

       These functions may be called from user or kernel context.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5), net_instance_register(9F), net_instance_unregister(9F), net_zoneidtonetid(9F)

SunOS 5.11							    30 Oct 2008 				  net_instance_notify_register(9F)
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