diff --git a/src/IDF/Scm/Git.php b/src/IDF/Scm/Git.php
index 4aed840..3442123 100644
--- a/src/IDF/Scm/Git.php
+++ b/src/IDF/Scm/Git.php
@@ -28,6 +28,7 @@
 class IDF_Scm_Git extends IDF_Scm
 {
     public $mediumtree_fmt = 'commit %H%nAuthor: %an <%ae>%nTree: %T%nDate: %ai%n%n%s%n%n%b';
+    public $date_fmt = 
     
     /* ============================================== *
      *                                                *
@@ -228,6 +229,7 @@ class IDF_Scm_Git extends IDF_Scm
                        escapeshellarg($this->repo),
                        escapeshellarg($hash));
         $ret = 0; $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out, $ret);
         if ($ret != 0) return false;
         return trim($out[0]);
@@ -277,6 +279,7 @@ class IDF_Scm_Git extends IDF_Scm
                        escapeshellarg($this->repo), 
                        escapeshellarg($commit));
         $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out);
         foreach ($out as $line) {
             list($perm, $type, $hash, $size, $file) = preg_split('/ |\t/', $line, 5, PREG_SPLIT_NO_EMPTY);
@@ -322,6 +325,7 @@ class IDF_Scm_Git extends IDF_Scm
                            escapeshellarg($commit));
         }
         $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out, $ret);
         if ($ret != 0 or count($out) == 0) {
             return false;
@@ -357,6 +361,7 @@ class IDF_Scm_Git extends IDF_Scm
                        "'commit %H%n'", 
                        escapeshellarg($commit));
         $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out);
         $affected = count($out) - 2;
         $added = 0;
@@ -389,6 +394,7 @@ class IDF_Scm_Git extends IDF_Scm
                        escapeshellarg($this->repo), $n, $this->mediumtree_fmt, 
                        escapeshellarg($commit));
         $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out);
         return self::parseLog($out, 4);
     }
diff --git a/src/IDF/Scm/Mercurial.php b/src/IDF/Scm/Mercurial.php
index e8c8da7..c371844 100644
--- a/src/IDF/Scm/Mercurial.php
+++ b/src/IDF/Scm/Mercurial.php
@@ -84,6 +84,7 @@ class IDF_Scm_Mercurial extends IDF_Scm
         $cmd = sprintf(Pluf::f('hg_path', 'hg').' log -R %s -r %s',
                        escapeshellarg($this->repo),
                        escapeshellarg($rev));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out, $ret);
         return ($ret == 0);
     }
@@ -102,6 +103,7 @@ class IDF_Scm_Mercurial extends IDF_Scm
                        escapeshellarg($hash));
         $ret = 0; 
         $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out, $ret);
         return ($ret != 0) ? false : 'commit'; 
     }
@@ -145,6 +147,7 @@ class IDF_Scm_Mercurial extends IDF_Scm
         $cmd = sprintf($cmd_tmpl, escapeshellarg($this->repo), $tree, ($recurse) ? '' : ''); 
         $out = array();
         $res = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out);
         $tmp_hack = array();
         while (null !== ($line = array_pop($out))) {
@@ -191,6 +194,7 @@ class IDF_Scm_Mercurial extends IDF_Scm
         $cmd_tmpl = Pluf::f('hg_path', 'hg').' manifest -R %s --debug -r %s';
         $cmd = sprintf($cmd_tmpl, escapeshellarg($this->repo), $commit); 
         $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out);
         $tmp_hack = array();
         while (null !== ($line = array_pop($out))) {
@@ -242,6 +246,7 @@ class IDF_Scm_Mercurial extends IDF_Scm
                        escapeshellarg($this->repo), 
                        escapeshellarg($def->commit), 
                        escapeshellarg($this->repo.'/'.$def->file));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         return ($cmd_only) ? $cmd : shell_exec($cmd);
     }
 
@@ -256,6 +261,7 @@ class IDF_Scm_Mercurial extends IDF_Scm
             return $this->cache['branches'];
         }
         $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec(sprintf(Pluf::f('hg_path', 'hg').' branches -R %s', 
                               escapeshellarg($this->repo)), $out);
         $res = array();
@@ -287,6 +293,7 @@ class IDF_Scm_Mercurial extends IDF_Scm
         $cmd = sprintf($tmpl, 
                        escapeshellarg($commit), escapeshellarg($this->repo));
         $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out);
         $log = array();
         $change = array();
@@ -328,6 +335,7 @@ class IDF_Scm_Mercurial extends IDF_Scm
     {
         $cmd = sprintf(Pluf::f('hg_path', 'hg').' log -R %s -l%s ', escapeshellarg($this->repo), $n, $commit);
         $out = array();
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out);
         return self::parseLog($out, 6);
     }
diff --git a/src/IDF/Scm/Svn.php b/src/IDF/Scm/Svn.php
index 1d905b3..6766186 100644
--- a/src/IDF/Scm/Svn.php
+++ b/src/IDF/Scm/Svn.php
@@ -146,6 +146,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo),
                        escapeshellarg($rev));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out, $ret);
         return (0 == $ret);
     }
@@ -170,6 +171,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo.'/'.$path),
                        escapeshellarg($rev));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $xmlInfo = shell_exec($cmd);
 
         // If exception is thrown, return false
@@ -196,6 +198,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo.'/'.$folder),
                        escapeshellarg($commit));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $xml = simplexml_load_string(shell_exec($cmd));
         $res = array();
         $folder = (strlen($folder) and ($folder != '/')) ? $folder.'/' : '';
@@ -236,6 +239,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo),
                        escapeshellarg($rev));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $xml = simplexml_load_string(shell_exec($cmd));
         $this->cache['commitmess'][$rev] = (string) $xml->logentry->msg;
         return $this->cache['commitmess'][$rev];
@@ -251,6 +255,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo.'/'.$filename),
                        escapeshellarg($rev));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $xml = simplexml_load_string(shell_exec($cmd));
         if (!isset($xml->entry)) {
             return false;
@@ -277,6 +282,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo.'/'.$def->fullpath),
                        escapeshellarg($def->rev));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         return ($cmd_only) ? $cmd : shell_exec($cmd);
     }
 
@@ -295,6 +301,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->username),
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo.'/branches'));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out, $ret);
         if ($ret == 0) {
             foreach ($out as $entry) {
@@ -309,6 +316,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->username),
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo.'/trunk'));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         exec($cmd, $out, $ret);
         if ($ret == 0) {
             $res = array('trunk' => 'trunk') + $res;
@@ -348,6 +356,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo),
                        escapeshellarg($commit));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $xmlRes = shell_exec($cmd);
         $xml = simplexml_load_string($xmlRes);
         $res['author'] = (string) $xml->logentry->author;
@@ -376,6 +385,7 @@ class IDF_Scm_Svn extends IDF_Scm
         $cmd = sprintf(Pluf::f('svnlook_path', 'svnlook').' changed -r %s %s',
                        escapeshellarg($commit),
                        escapeshellarg($repo));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $out = shell_exec($cmd);
         $lines = preg_split("/\015\012|\015|\012/", $out);
         return (count($lines) > 100);
@@ -389,6 +399,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->username),
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         return shell_exec($cmd);
     }
 
@@ -414,6 +425,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo),
                        escapeshellarg($branch));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $xmlRes = shell_exec($cmd);
         $xml = simplexml_load_string($xmlRes);
         foreach ($xml->logentry as $entry) {
@@ -445,6 +457,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo.'/'.$path),
                        escapeshellarg($rev));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $xmlProps = shell_exec($cmd);
         $props = simplexml_load_string($xmlProps);
 
@@ -480,6 +493,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo.'/'.$path),
                        escapeshellarg($rev));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $xmlProp = shell_exec($cmd);
         $prop = simplexml_load_string($xmlProp);
 
@@ -502,6 +516,7 @@ class IDF_Scm_Svn extends IDF_Scm
                        escapeshellarg($this->password),
                        escapeshellarg($this->repo),
                        escapeshellarg($rev));
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
         $xmlInfo = shell_exec($cmd);
 
         $xml = simplexml_load_string($xmlInfo);