PLUMED contains a number of simple command line tools. To use one of these tools you issue a command something like:

plumed <toolname> <list of input flags for that tool>

The following is a list of the various standalone tools that PLUMED contains.

driver-float	Equivalent to driver, but using single precision reals.
driver	driver is a tool that allows one to to use plumed to post-process an existing trajectory.
gentemplate	gentemplate is a tool that you can use to construct template inputs for the variousactions
info	This tool allows you to obtain information about your plumed version
kt	Print out the value of \(k_BT\) at a particular temperature
manual	manual is a tool that you can use to construct the manual page fora particular action
simplemd	simplemd allows one to do molecular dynamics on systems of Lennard-Jones atoms.
sum_hills	sum_hills is a tool that allows one to to use plumed to post-process an existing hills/colvar file

For all these tools and to use PLUMED as a plugin in an MD calculation you will need an input file.