diff --git a/CHANGES.md b/CHANGES.md
index daa0663..9d6b568 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,6 +2,7 @@
 
 ## bunyan 0.16.5 (not yet released)
 
+- Allow `bunyan -p '*'` to capture bunyan dtrace probes from **all** processes.
 - issue #55: Add support for `BUNYAN_NO_COLOR` environment variable to
   turn off all output coloring. This is still overridden by the `--color`
   and `--no-color` options.
diff --git a/bin/bunyan b/bin/bunyan
index 12cb087..186c39f 100755
--- a/bin/bunyan
+++ b/bin/bunyan
@@ -403,7 +403,11 @@ function parseArgv(argv) {
         var pidArg = args.shift();
         var pid = +(pidArg);
         if (isNaN(pid)) {
-          throw new Error(format('invalid pid: "%s"', pidArg));
+          if (pidArg === '*') {
+            pid = '*'
+          } else {
+            throw new Error(format('invalid pid: "%s"', pidArg));
+          }
         }
         parsed.pid = pid;
         break;
@@ -912,7 +916,7 @@ function processStdin(opts, stylize, callback) {
 function processPid(opts, stylize, callback) {
   var leftover = "";  // Left-over partial line from last chunk.
   var argv = ['dtrace', '-Z', '-x', 'strsize=4k', '-qn',
-    format('bunyan%d:::log-*{printf("%s", copyinstr(arg0))}', opts.pid)];
+    format('bunyan%s:::log-*{printf("%s", copyinstr(arg0))}', opts.pid)];
   var dtrace = spawn(argv[0], argv.slice(1),
     // Share the stderr handle to have error output come
     // straight through. Only supported in v0.8+.