Someone sent me a email with an attachment, how do i detach the attachment to a file in Redhat Linux? On the command line...

Haven't done but I think you can do it with uudecode (you use uuencode to add attachments which I have done).

You should be able to get information from:
man uudecode

whoops, looking at man page for UUDECODE

but still how do i do this against /var/spool/mail/mailbox?

do i login into my mailbox? then what do i do, im tottally confused

Run "mail" to read your mailbox.

Type the number of the message that contains the attachment so you can read the message.

Type "s filename" to save the message to filename (where filename is any name you want to give it.)

Run "uudecode -o outfile filename" where filename is the name you used above and outfile is another name (any name you want other than the original) where you want the output to go. This should put the attachment into outfile.

FYI: I just worked this out for a file I uuencoded. Since I hadn't done it before there may be other things I'm not aware of that need to be done or better ways to do it.

thank you, excellent help