When it's the possessive of 'it', it's spelled "its", without the

apostrophe.

bin/csh/csh.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: csh.c,v 1.48 2022/01/05 20:57:27 millert Exp $	*/
+/*	$OpenBSD: csh.c,v 1.49 2022/01/28 05:15:05 guenther Exp $	*/
 /*	$NetBSD: csh.c,v 1.14 1995/04/29 23:21:28 mycroft Exp $	*/
 
 /*-
@@ -921,7 +921,7 @@ phup(int sig)
 	    do
 		/*
 		 * If a process is in the foreground; we try to kill
-		 * it's process group. If we succeed, then the
+		 * its process group. If we succeed, then the
 		 * whole job is gone. Otherwise we keep going...
 		 * But avoid sending HUP to the shell again.
 		 */

bin/csh/set.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: set.c,v 1.23 2019/07/03 03:24:01 deraadt Exp $	*/
+/*	$OpenBSD: set.c,v 1.24 2022/01/28 05:15:05 guenther Exp $	*/
 /*	$NetBSD: set.c,v 1.8 1995/03/21 18:35:52 mycroft Exp $	*/
 
 /*-
@@ -509,7 +509,7 @@ unsetv1(struct varent *p)
     /*
      * If p is missing one child, then we can move the other into where p is.
      * Otherwise, we find the predecessor of p, which is guaranteed to have no
-     * right child, copy it into p, and move it's left child into it.
+     * right child, copy it into p, and move its left child into it.
      */
     if (p->v_right == 0)
 	c = p->v_left;
@@ -612,7 +612,7 @@ balance(struct varent *p, int f, int d)
     int ff;
 
     /*
-     * Ok, from here on, p is the node we're operating on; pp is it's parent; f
+     * Ok, from here on, p is the node we're operating on; pp is its parent; f
      * is the branch of p from which we have come; ff is the branch of pp which
      * is p.
      */

bin/expr/expr.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: expr.c,v 1.27 2018/03/31 14:50:56 tobias Exp $	*/
+/*	$OpenBSD: expr.c,v 1.28 2022/01/28 05:15:05 guenther Exp $	*/
 /*	$NetBSD: expr.c,v 1.3.6.1 1996/06/04 20:41:47 cgd Exp $	*/
 
 /*
@@ -92,7 +92,7 @@ free_value(struct val *vp)
 }
 
 
-/* determine if vp is an integer; if so, return it's value in *r */
+/* determine if vp is an integer; if so, return its value in *r */
 int
 is_integer(struct val *vp, int64_t *r, const char **errstr)
 {

bin/pax/pat_rep.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: pat_rep.c,v 1.43 2017/09/16 07:42:34 otto Exp $	*/
+/*	$OpenBSD: pat_rep.c,v 1.44 2022/01/28 05:15:05 guenther Exp $	*/
 /*	$NetBSD: pat_rep.c,v 1.4 1995/03/21 09:07:33 cgd Exp $	*/
 
 /*-
@@ -79,7 +79,7 @@ static int resub(regex_t *, regmatch_t *, char *, char *, char *, char *);
 /*
  * rep_add()
  *	parses the -s replacement string; compiles the regular expression
- *	and stores the compiled value and it's replacement string together in
+ *	and stores the compiled value and its replacement string together in
  *	replacement string list. Input to this function is of the form:
  *		/old/new/pg
  *	The first char in the string specifies the delimiter used by this