hint about req. free space, formatting cleanup, drop completed todo items

libisoburn/trunk/releng/run_all_releng

@@ -26,13 +26,22 @@ done
 
 if [ ! "${1}" ]; then
 cat << HLP
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+${SELF} runs executables from CWD starting 
+with releng_*, passing them its own options.
+stdout/stderr output stored in:
+ ${CLOG}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+self generated data are stored in ${GEN_DATA_DIR}.
+required space for these data is about 300 megabytes.
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+examples:
+# run xorriso and keep the self generated data
+ $ ./${SELF} -x path/to/xorriso [-k1]
 
-${SELF} runs executables from CWD starting with releng_*, passing them its own options.
-stdout/stderr output stored in ${CLOG}
-
- ${SELF} -x path/to/xorriso [-k1]
- ${SELF} -c1
-
+# clean up self generated data from previous run
+ $ ./${SELF} -c1
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 HLP
  exit 31
 fi
@@ -82,12 +91,14 @@ fi
          printf "\n${SELF}: Removed my own log ${CLOG}.prev."
          rm -f "${CLOG}".prev 
       fi
-      printf "\n"
  else
       E2=`date '+%s'`
-      let ES="${E2} - ${E1}"
-      printf " Total elapsed ${ES} sec."
-
+      if [ ${E2} -eq ${E1} ]; then
+        printf " Total elapsed 0 sec."
+      else
+        let ES="${E2} - ${E1}"
+        printf " Total elapsed ${ES} sec."
+      fi
       #####
       printf "\n${SELF}: Std(out|err) logged in ${CLOG}."
       printf "\n${SELF}: Trivial log file examination:"
@@ -126,6 +137,10 @@ fi
 	printf "diff -Naur ${CLOG}.prev ${CLOG} | less"
       fi
  fi
+ 
+ #
+ printf "\n${SELF}: Leaving the following cruft in ${GEN_DATA_DIR}:\n"
+ ls -lth "${GEN_DATA_DIR}"
 
  # Fin
  exit 0