What is the equivalent of Linux command 'ps --forest'?

[Mel Flynn]

On Friday 05 June 2009 09:12:08 Paul B. Mahol wrote:
> On 6/5/09, Yuri <yuri at rawbw.com> wrote:
> > How can I see processes in a hierarchical way?
>
> http://lists.freebsd.org/pipermail/svn-src-head/2009-May/006912.html
>
> or pstree from ports.

And if in a jail, you can use the patch below to add jail support via -j 
switch.
-- 
Mel

--- pstree.c.orig	2007-10-26 11:39:50.000000000 -0800
+++ pstree.c	2008-09-20 00:30:53.000000000 -0800
@@ -189,7 +189,7 @@
   { "qq",       "qw",       "`",    "q",    "t",    "x",    "m",    "\016", 
"\017", "\033(B\033)0" }  /*Vt100*/
 }, *C;
 
-int MyPid, NProc, Columns, RootPid;
+int MyPid, NProc, Columns, RootPid, jFlag;
 short showall = TRUE, soption = FALSE, Uoption = FALSE;
 char *name = "", *str = NULL, *Progname;
 long ipid = -1;
@@ -464,6 +464,27 @@
     exit(1);
   }
   
+  /* If this is a FreeBSD jail(8), create a fake root process 'jailinit', 
which
+   * serves as starting point for the tree. */
+  if( jFlag )
+  {
+    P = realloc(P, (i+1) * sizeof(struct Proc));
+    if (P == NULL) {
+      fprintf(stderr, "Problems with realloc.\n");
+      exit(1);
+    }
+    memset(&P[i], 0, sizeof(*P));
+    P[i].uid = 0;
+    (void)strncpy(P[i].name, "root", sizeof(P[i].name));
+    P[i].pid = 1;
+    P[i].ppid = 0;
+    P[i].pgid = 1;
+    P[i].thcount = 1;
+    (void)strncpy(P[i].cmd, "/sbin/jailinit", sizeof(P[i].cmd));
+    P[i].parent = P[i].child = P[i].sister = -1;
+    P[i].print = FALSE;
+    i++;
+  }
   while (NULL != fgets(line, MAXLINE, tn)) {
     int len, num;
     len = strlen(line);
@@ -728,6 +749,7 @@
 	  "   -f file   read input from <file> (- is stdin) instead of running\n"
 	  "             \"%s\"\n"
 	  "   -g n      use graphics chars for tree. n=1: IBM-850, n=2: VT100\n"
+	  "   -j        Assume running in a FreeBSD jail (no root process)\n"
 	  "   -l n      print tree to n level deep\n"
 	  "   -u user   show only branches containing processes of <user>\n"
 	  "   -U        don't show branches containing only root processes\n"
@@ -756,7 +778,7 @@
   Progname = strrchr(argv[0],'/');
   Progname = (NULL == Progname) ? argv[0] : Progname + 1;
   
-  while ((ch = getopt(argc, argv, "df:g:hl:p:s:u:Uw?")) != EOF)
+  while ((ch = getopt(argc, argv, "df:g:hjl:p:s:u:Uw?")) != EOF)
     switch(ch) {
       /*case 'a':
 	align   = TRUE;
@@ -778,6 +800,9 @@
       }
       C = &TreeChars[graph];
       break;
+    case 'j' :
+      jFlag = 1;
+      break;
     case 'l':                                 /* LOPTION */
       maxLdepth = atoi(optarg);               /* LOPTION */
       if(maxLdepth < 1) maxLdepth = 1;        /* LOPTION */