If I want to create such Installer (Not RPM)

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06-20-2010

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If I want to create such Installer (Not RPM)

Hi All,

I had created a installer (RPM), but later I came across that Netbeans (netbeans-6.9-ml-linux), Flex Builder Linux Alpha (flexbuilder_linux_install_a4_081408.bin) and JDK (jdk-6u20-linux-i586-rpm.bin) dont provide any RPM but they provide a huge binary executable shell script.

My question is:
- Why these guys don't provide a RPM?
- And when I open JDK installer shell script in editplus editor, its been a bit encrypted one. How these guys putting a huge stuff in a single shell script + encrypting a maximum of code & gets installed with all required files?
- If I want to re-write in the similar fashion, What resources I would required. Any links etc?

Thanks.

jw_amp

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rpm2

RPM2(3) 						User Contributed Perl Documentation						   RPM2(3)

NAME

       RPM2 - Perl bindings for the RPM Package Manager API

SYNOPSIS

	 use RPM2;

	 my $db = RPM2->open_rpm_db();

	 my $i = $db->find_all_iter();
	 print "The following packages are installed (aka, 'rpm -qa'):
";
	 while (my $pkg = $i->next) {
	   print $pkg->as_nvre, "
";
	 }

	 $i = $db->find_by_name_iter("kernel");
	 print "The following kernels are installed (aka, 'rpm -q kernel'):
";
	 while (my $pkg = $i->next) {
	   print $pkg->as_nvre, " ", int($pkg->size()/1024), "k
";
	 }

	 $i = $db->find_by_provides_iter("kernel");
	 print "The following packages provide 'kernel' (aka, 'rpm -q --whatprovides kernel'):
";
	 while (my $pkg = $i->next) {
	   print $pkg->as_nvre, " ", int($pkg->size()/1024), "k
";
	 }

	 print "The following packages are installed (aka, 'rpm -qa' once more):
";
	 foreach my $pkg ($db->find_by_file("/bin/sh")) {
	   print $pkg->as_nvre, "
";
	 }

	 my $pkg = RPM2->open_package("/tmp/XFree86-4.1.0-15.src.rpm");
	 print "Package opened: ", $pkg->as_nvre(), ", is source: ", $pkg->is_source_package, "
";

DESCRIPTION

       The RPM2 module provides an object-oriented interface to querying both the installed RPM database as well as files on the filesystem.

CLASS METHODS

       Pretty much all use of the class starts here.  There are two main entrypoints into the package -- either through the database of installed
       rpms (aka the rpmdb) or through a file on the filesystem (such as kernel-2.4.9-31.src.rpm or kernel-2.4.9-31.i386.rpm

       You can have multiple RPM databases open at once, as well as running multiple queries on each.

       open_rpm_db(-path => "/path/to/db")
	      As it sounds, it opens the RPM database, and returns it as an object.

       open_package("foo-1.1-14.noarch.rpm")
	      Opens a specific package (RPM or SRPM).  Returns a Header object.

RPM DB object methods
       find_all_iter()
	      Returns an iterator object that iterates over the entire database.

       find_all()
	      Returns an list of all of the results of the find_all_iter() method.

       find_by_file_iter($filename)
	      Returns an iterator that returns all packages that contain a given file.

       find_by_file($filename)
	      Ditto, except it just returns the list

       find_by_name_iter($package_name)
	      You get the idea.  This one is for iterating by package name.

       find_by_name($package_name)
	      Ditto, except it returns a list.

       find_by_provides_iter($provides_string)
	      This one iterates over provides.

       find_by_provides($provides_string)
	      Ditto, except it returns a list.

       find_by_requires_iter($requires_string)
	      This one iterates over requires.

       find_by_requires($requires_string)
	      Ditto, except it returns a list.

RPM Header object methods
       stuff goes here

TODO

       Package installation and removal.

       Signature validation.

HISTORY

       0.01 Initial release

AUTHOR

       Chip Turner <cturner@redhat.com>

SEE ALSO

       perl.  The original RPM module.

perl v5.8.0							    2002-11-08								   RPM2(3)

Red Hat