Incidentally, most of those shortcut commands for openssl can be re-created by either making a one-liner shell script, or through Fink (I'm pretty sure Fink includes a few shortcuts like md5sum).
For a one-liner shortcut, you could create a script called sha1sum with
Code:
#!/bin/bash
/usr/bin/openssl sha1 $1
You can replace "sha1" with any of the digests openssl supports.
Though, IMHO, this type of shortcut is really not that useful.
I don't use the alias directive enough to have made a correct suggestion on it. For example, I wasn't sure if you had to include a parameter variable in the alias directive like you do in a shell script (obviously not, from your example).
Aha, with alias, it is like a simple replacement macro in C, the bash interpreter search for sha1, replaces it with whatever in the quote ("/usr/bin/openssl sha1") THEN it is executed.