Indicate that env(1) allows you to supply arguments to the utility it

executes in the usage() message and manual page. Use "utility" instead of
"command" in both places to emphasise that shell builtins etc. will not work,
and to be consistent with the terminology used by POSIX.

PR:		39210
Submitted by:	Danny J. Zerkel <dzerkel@columbus.rr.com>
MFC after:	1 week

usr.bin/env/env.c

@@ -92,6 +92,6 @@ static void
 usage()
 {
 	(void)fprintf(stderr,
-	    "usage: env [-] [-i] [name=value ...] [command]\n");
+	    "usage: env [-] [-i] [name=value ...] [utility [argument ...]]\n");
 	exit(1);
 }

usr.bin/printenv/printenv.1

@@ -47,7 +47,7 @@
 .Op Fl
 .Op Fl i
 .Op Ar name Ns = Ns Ar value ...
-.Op Ar command
+.Op Ar utility Oo Ar argument ... Oc
 .Sh DESCRIPTION
 The
 .Nm
@@ -68,7 +68,7 @@ manual page.
 The
 .Nm env
 utility executes
-.Ar command
+.Ar utility
 after modifying the environment as
 specified on the command line.
 The option
@@ -83,7 +83,7 @@ The options are as follows:
 .Bl -tag -width indent
 .It Fl i
 Execute the
-.Ar command
+.Ar utility
 with only those environment values specified.
 The environment inherited
 by
@@ -95,7 +95,7 @@ Identical to the
 option, available for backward compatibility.
 .El
 .Pp
-If no command is specified,
+If no utility is specified,
 .Nm env
 prints out the names and values
 of the variables in the environment, with one name/value pair per line.
@@ -124,10 +124,10 @@ as well as set up the environment as desired.
 .Pp
 .Ex -std env
 An exit status of 126 indicates
-.Ar command
+.Ar utility
 was found, but could not be executed.
 An exit status of 127 indicates
-.Ar command
+.Ar utility
 could not be found.
 .Sh SEE ALSO
 .Xr csh 1 ,
@@ -147,5 +147,5 @@ command appeared in
 .Sh BUGS
 The
 .Nm env
-utility doesn't handle commands with equal (``='') signs in their
+utility doesn't handle utility arguments with equal (``='') signs in their
 names, for obvious reasons.