Add and document the 'jid' keyword for the '-o' option.

Reviewed by:	gad
MFC after:	3 days

bin/ps/keyword.c

@@ -95,6 +95,7 @@ static VAR var[] = {
 	{"inblk", "INBLK", NULL, USER, rvar, NULL, 4, ROFF(ru_inblock), LONG,
 		"ld", 0},
 	{"inblock", "", "inblk", 0, NULL, NULL, 0, 0, CHAR, NULL, 0},
+	{"jid", "JID", NULL, 0, kvar, NULL, 6, KOFF(ki_jid), INT, "d", 0},
 	{"jobc", "JOBC", NULL, 0, kvar, NULL, 4, KOFF(ki_jobc), SHORT, "d",
 		0},
 	{"ktrace", "KTRACE", NULL, 0, kvar, NULL, 8, KOFF(ki_traceflag), INT,

bin/ps/ps.1

@@ -29,7 +29,7 @@
 .\"     @(#)ps.1	8.3 (Berkeley) 4/18/94
 .\" $FreeBSD$
 .\"
-.Dd March 27, 2004
+.Dd March 20, 2005
 .Dt PS 1
 .Os
 .Sh NAME
@@ -471,6 +471,8 @@ the process flags, in hexadecimal (alias
 .It Cm inblk
 total blocks read (alias
 .Cm inblock )
+.It Cm jid
+jail ID
 .It Cm jobc
 job control count
 .It Cm ktrace