diff -urN torque-2.5.9/src/server/req_runjob.c torque-2.5.9.server_prologue/src/server/req_runjob.c
--- torque-2.5.9/src/server/req_runjob.c	2011-08-26 22:24:29.000000000 +0100
+++ torque-2.5.9.server_prologue/src/server/req_runjob.c	2012-04-25 18:06:49.311369126 +0100
@@ -82,6 +82,7 @@
 
 #include <pbs_config.h>   /* the master config generated by configure */
 
+#include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/wait.h>
@@ -138,6 +139,7 @@
 static int  svr_strtjob2(job *, struct batch_request *);
 static job *chk_job_torun(struct batch_request *, int);
 static int  assign_hosts(job *, char *, int, char *, char *);
+static int svr_prologue(job *, struct batch_request *);
 
 /* Global Data Items: */
 
@@ -1047,6 +1049,9 @@
 
   svr_setjobstate(pjob,JOB_STATE_RUNNING,JOB_SUBSTATE_PRERUN);
 
+  /* server side prologue script, A. Pickford - 2012-04-25 */
+  svr_prologue(pjob, preq); 
+
   /* if job start timeout attribute is set use its value */
   
   if (((server.sv_attr[(int)SRV_ATR_JobStartTimeout].at_flags & ATR_VFLAG_SET) != 0)
@@ -1816,5 +1821,59 @@
   }  /* END assign_hosts() */
 
 
+static int svr_prologue(job *pjob, struct batch_request *preq)
+{
+    extern char *PAddrToString(pbs_net_t *);
+    char tmpLine[1024];
+    char tmpHost[256];
+    char tmpID[256];
+    char tmpUser[256];
+    int i;
+    int rc;
+    int fd_prologue;
+    struct stat sbuf;
+    char prologueFile[] = "/var/spool/torque/server_priv/prologue";
+
+    rc = stat(prologueFile, &sbuf);
+    if (rc != 0) {
+        if (LOGLEVEL >= 3) {
+            i = errno;
+            sprintf(tmpLine, "svr_prologue; rc stat returned: %i, errno: %i, %s", rc, i, strerror(i));
+            log_event(PBSEVENT_JOB, PBS_EVENTCLASS_JOB, pjob->ji_qs.ji_jobid, tmpLine);
+        }
+        return -1;
+    }
+
+    strcpy(tmpUser, pjob->ji_wattr[JOB_ATR_euser].at_val.at_str);
+
+    strcpy(tmpHost, pjob->ji_wattr[JOB_ATR_exec_host].at_val.at_str);
+    for (i = 0; i < 1024 && tmpHost[i] != 0; ++i) {
+        if (tmpHost[i] == '/') {
+            tmpHost[i] = 0;
+            break;
+        }
+    }
+
+    strcpy(tmpID, pjob->ji_qs.ji_jobid);
+    for (i = 0; i < 1024 && tmpID[i] != 0; ++i) {
+        if (tmpID[i] == '.') {
+            tmpID[i] = 0;
+            break;
+        }
+    }
+
+    if (LOGLEVEL >= 3) {
+        sprintf(tmpLine, "svr_prologue; running server prologue file for: %s %s %s", tmpID, tmpUser, tmpHost);
+        log_event(PBSEVENT_JOB, PBS_EVENTCLASS_JOB, pjob->ji_qs.ji_jobid, tmpLine);
+    }
+
+    sprintf(tmpLine, "%s %s %s %s", prologueFile, tmpID, tmpUser, tmpHost);
+    rc = system(tmpLine);
+
+    if (rc != 0) return -2;
+
+    return 0;
+}
+
 /* END req_runjob.c */