06-01-2012
Linux Operating system concepts
hi guys,
i got job recently in a company which provide a product for data backup and data recovery... as dis product is wrriten in c++ am workin in c++.. now am under training and i want to learn abt Operating System concepts and OS programming using c and c++. i know basic c and c++ programming concepts.... so could u suggest some e-book r link wer i can learn all abt Operating System frm scratch to advanced Operating concept.. dat means i shuld hav through knowledge in OS ,how it executin, wat r d various OS implementation methods and am shuld be good enough to write my own OS code. den i also want to know abt kernel and shell scripting and i lik linux very much so wer can i get source code for linux and full explanation for Linux Source code. for dis, guys pls guide me frm wer shuld i start and how to go abt these things ....so guys pls help me....thanks in advance.
am eagerly waiting for ur supports
P.s:By the way am week in english and if u cant understand wat am trying to say pls forgive me and sorry for trouble..
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LEARN ABOUT MOJAVE
productsign
productsign(1) BSD General Commands Manual productsign(1)
NAME
productsign -- Sign an OS X Installer product archive
SYNOPSIS
productsign [options] --sign identity input-product-path output-product-path
DESCRIPTION
productsign adds a digital signature to a product archive previously created with productbuild(1). Although you can add a digital signature
at the time you run productbuild(1), you may wish to add a signature later, once the product archive has been tested and is ready to deploy.
If you run productsign on a product archive that was previously signed, the existing signature will be replaced.
To sign a product archive, you will need to have a certificate and corresponding private key -- together called an ``identity'' -- in one of
your accessible keychains. To add a signature, specify the name of the identity using the --sign option. The identity's name is the same as
the ``Common Name'' of the certificate.
If you want to search for the identity in a specific keychain, specify the path to the keychain file using the --keychain option. Otherwise,
the default keychain search path is used.
productsign will embed the signing certificate in the product archive, as well as any intermediate certificates that are found in the key-
chain. If you need to embed additional certificates to form a chain of trust between the signing certificate and a trusted root certificate
on the system, use the --cert option to give the Common Name of the intermediate certificate. Multiple --cert options may be used to embed
multiple intermediate certificates.
The signature can optionally include a trusted timestamp. This is enabled by default when signing with a Developer ID identity, but it can be
enabled explicitly using the --timestamp option. A timestamp server must be contacted to embed a trusted timestamp. If you aren't connected
to the Internet, you can use --timestamp=none to disable timestamps, even for a Developer ID identity.
ARGUMENTS AND OPTIONS
--sign identity-name
The name of the identity to use for signing the product archive.
--keychain keychain-path
Specify a specific keychain to search for the signing identity.
--cert certificate-name
Specify an intermediate certificate to be embedded in the product archive.
--timestamp
Include a trusted timestamp with the signature.
--timestamp=none
Disable trusted timestamp, regardless of identity.
input-product-path
The product archive to be signed.
output-product-path
The path to which the signed product archive will be written. Must not be the same as input-product-path.
SEE ALSO
productbuild(1)
Mac OS September 15, 2010 Mac OS