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Full Discussion: Perl Issue
Top Forums Shell Programming and Scripting Perl Issue Post 302280722 by raj001 on Tuesday 27th of January 2009 12:51:01 PM
Old 01-27-2009
This is not working, but may be we are coming closer.

actually the fields are printed out from "$entry" variable, so can't we put something around the variable or into the subroutine "get".


print '"'.(join '","', "@dn", map {get $entry, $_->[1], $_->[2]} @fields)."\"\n"; # row

# subroutine

sub get
{
return $_[0]->exists($_[1])
? $_[0]->get($_[1])->[$_[2] ? $_[2] : 0]
: '';
}
 

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nlist(3)						     Library Functions Manual							  nlist(3)

NAME
nlist - Gets entries from name list. SYNOPSIS
#include <nlist.h> nlist(filename, nl) char *filename; struct nlist nl[]; cc ... -lmld DESCRIPTION
NOTE: The nlist subroutine has moved from the standard C library to the libmld.a library due to the difference in the object file format. Programs that need to use nlist must be linked with the -lmld flag. The nlist subroutine examines the name list in the given executable output file and selectively extracts a list of values. The name list consists of an array of structures containing names, types and values. The list is terminated with a null name. Each name is looked up in the name list of the file. If the name is found, the type and value of the name are inserted in the next two fields. If the name is not found, both entries are set to 0. For BSD compatibility, the nlist subroutine allows symbol names to be preceded by an underscore. If it does not find a symbol that matches the name as specified, nlist attempts to locate the symbol name with the leading underscore removed. For the structure declaration, see /usr/include/nlist.h. To obtain up-to-date system addresses from the system name list kept in the file /vmunix, use the knlist subroutine. Alternatively, use the getsysinfo function to obtain the name of the file from which the kernel was booted, prepend a slash character ("/") to this name, and supply the prepended name to the nlist subroutine. Do not specify /vmunix as the filename to the nlist subroutine; nlist may return invalid symbol addresses. ERRORS
If the file cannot be found or if it is not a valid namelist, -1 is returned; otherwise, the number of unfound namelist entries is returned. The type entry is set to 0 if the symbol is not found. RELATED INFORMATION
getsysinfo(2), knlist(3), a.out(4) delim off nlist(3)
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