PGP encryption in UNIX

Hi All,
 I have to encrypt a file using PGP encryption in unix.I have posted a similiar question some time back and some one replied to use GPG for this.But,I want to know the difference between PGP and GPG.I know that PGP is licensed and GPG is a freeware.

My company is purchasing a license for PGP so I dont think i can use GPG is for this right??and they are trying to install the PGP software  on the unix server.
So,I need some help or documents that can guide me through this.
I just need to encrypt the file using PGP encryption and place it in the directory.

Appreciate your help on this,

Thanks and Regards,
ra100020Asked:
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nemws1Database AdministratorCommented:
Here's a great guide.  Most of it is very useful:

http://www.cs.wm.edu/pgp.html

You probably won't see to read the section on "Using PGP in exmh", but the rest is good.

Basically...
Encrypt:  pgp -e <filename>
Decrypt: pgp <filename>
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nemws1Database AdministratorCommented:
They are compatible systems.  You can encrypt or decrypt a PGP file using GPG and vice versa.
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nemws1Database AdministratorCommented:
In fact, my keys were all created using PGP on one system and I converted over to using GPG and didn't have to update any of my files.
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ra100020Author Commented:
Thanks a lot.Do I have to also install to GPG too on the server??.
When we use ex:   gpg - encrypt -filename,  can unix understand the line without installing gpg software??
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nemws1Database AdministratorCommented:
Most likely you *will* have to install it on the server if you want to encrypt/decrypt files there.  What OS is your server running?  There are binaries for every major OS so installation should be fairly easy.
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ra100020Author Commented:
I am using a HP unix server.I just had a doubt of whether to install PGP software or GPG software.My company said they are installing PGP software on the server so i thought commands related to pgp would be used??and i want to know what those are.

But earlier someone said,i can also use gpg commands for pgp encryption.So,to be frank i am kind of confused.


Appreciate your help,
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nemws1Database AdministratorCommented:
Ask your server administrator which one is installed.  You just need *either* one.
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ra100020Author Commented:
Thank a lot.
Administrator said they have installed PGP so can you let me know what are the commands or procedure to encrypt and decyrpt a file in unix using PGP commands??

Appreciate your help,
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