Scripts:
pkgdownload - For downloading apt packages with corresponding dependencies. After downloading, all files are bundled together in a tarball. You can find it here.
Hashsearch - For searching decrypted MD5 hashes from some online databases. Click here to get it.
Installation:
Being in the same directory (working directory) as the script, run the command:
:~# sudo cp {script_name} /usr/local/bin
Replace {script_name} with the specific script file. This will make it usable anywhere in the shell environment.
Note: You may have to enter your UNIX password.