Ah, then I stand by my original advice. Keep in mind, base64 encoded ascii/UTF-8/whatever encoding you like is still plaintext. If you want to be secure, use a password locker program or store them in a text file inside of a small encrypted volume which you unmount as soon as you're done with it (TrueCrypt is nice for this).
But if you don't care about them actually being secure, party on...
Aside from backticks, you can also use the dollar quote (I'm sure this has a better name):
$(some_command some arguments | some_other_command)
Finally, back to the original "how do I combine this with md5" question, you don't, as that won't do what you want. That is, you want to be able to recover the plaintext, but cryptographic hashes are designed specifically to make that practically impossible.
But if you don't care about them actually being secure, party on...
Aside from backticks, you can also use the dollar quote (I'm sure this has a better name):
Finally, back to the original "how do I combine this with md5" question, you don't, as that won't do what you want. That is, you want to be able to recover the plaintext, but cryptographic hashes are designed specifically to make that practically impossible.