Symbolic prefixes

We've discussed prefixes that map to a resource manager. A second form of prefix, known as a symbolic prefix, is a simple string substitution for a matched prefix.

You create symbolic prefixes using the POSIX ln (link) command. This command is typically used to create hard or symbolic links on a filesystem by using the -s option. If you also specify the -P option, then a symbolic link is created in the in-memory prefix space of procnto.

Command Description
ln -s existing_file symbolic_link Create a filesystem symbolic link.
ln -Ps existing_file symbolic_link Create a prefix tree symbolic link.

Note that a prefix tree symbolic link will always take precedence over a filesystem symbolic link.