--- a/amdumpext	Wed Dec 11 22:24:11 2013 +0100
+++ b/amdumpext	Wed Dec 11 22:37:00 2013 +0100
@@ -29,10 +29,10 @@
 # the commands we need to support as required by the
 # API:  http://wiki.zmanda.com/index.php/Application_API/Operations
 
-sub exit_support;
-sub exit_selfcheck;
-sub exit_estimate;
-sub exit_backup;
+sub exec_support;
+sub exec_selfcheck;
+sub exec_estimate;
+sub exec_backup;
 
 # some helper functions
 
@@ -76,25 +76,21 @@
     ) or pod2usage(-message => "$0 @argv");
 
     given ($command) {
-        when ("support")   { exit_support }
-        when ("selfcheck") { exit_selfcheck }
-        when ("estimate")  { exit_estimate }
-        when ("backup")    { exit_backup }
+        when ("support")   { exec_support }
+        when ("selfcheck") { exec_selfcheck }
+        when ("estimate")  { exec_estimate }
+        when ("backup")    { exec_backup }
     }
     pod2usage(-message => "$0 @argv");
 }
 
 # output a list of supported options
-sub exit_support {
-    print map {
-        map { y/_/-/; $_ }
-          $_
-          . " $SUPPORT{$_}\n"
-    } keys %SUPPORT;
+sub exec_support {
+    print map { "$_ $SUPPORT{$_}\n" =~ s/_/-/gr } keys %SUPPORT;
     exit 0;
 }
 
-sub exit_selfcheck {
+sub exec_selfcheck {
 
     if ($_ = (grep { -x ($_ .= "/dump") } split /:/ => $ENV{PATH})[0]) {
         OK "dump is \"$_\"";
@@ -121,7 +117,7 @@
     exit 0;
 }
 
-sub exit_estimate {
+sub exec_estimate {
 
     # $opt_level, $opt_device
     my @cmd = (
@@ -146,7 +142,7 @@
     exit 0;
 }
 
-sub exit_backup {
+sub exec_backup {
 
     # fd1: data channel
     # fd3: message channel