Mount a samba drive, with password from keychain

Here's how I did it

mkdir -p /Volumes/work \
&& mount -t smbfs //admin:$(security find-internet-password -D "Network Password" -l "share name" -w)@server/work /Volumes/work

Eventually creating sub-directory in /Volumes may require the add_subdirectory permissions, eg

sudo chmod +a "$(whoami):allow:add_subdirectory" /Volumes

The keychain access was a bit tricky, I found the answer and wrote it there. The important part was the capitals when specifying the secret kind.

You'll need to be able to create directories in /Volumes as well. This answer helped me.

There is a script able interface to the keychain and it is the security command.

If you are handy with shell scripting or another language and the password doesn't have spaces and odd characters you need to handle, you could follow this tutorial and teach yourself enough to get the password out of the keychain.

• http://blog.macromates.com/2006/keychain-access-from-shell/

So once you've figured out how to pass the password in as a command line argument user:pass you could execute the security command inline or set a temporary variable to hold the value.