DOKK / manpages / debian 11 / suckless-tools / sprop.1.en
SPROP(1) General Commands Manual SPROP(1)

sprop - simple X property utility

sprop xid atom [value] [-v]

The sprop utility prints the value of the property atom of the window with the given xid, or alternatively sets it to value if given. sprop can only interact with atoms which are strings.

prints version information to standard output, then exits.
sprop-0.1