phits-run: parse cmd options

bin/phits-run

@@ -0,0 +1 @@
+../mctools/phits/phits-run.sh

mctools/phits/phits-run.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+usage()
+{
+    echo "Usage: $(basename $0) file.inp [prefix] [njobs]"
+    echo "       file.inp: PHITS input file. Must contain the 'rseed = RSEED' string in the [Parameters] section"
+    echo "       prefix:   temporary folder prefix"
+    echo "       njobs:    number of jobs to run. Default=number of cores (output of nproc)"
+    exit 1
+}
+
+
+test $# -eq 0 && usage
+test $# -gt 3 && usage
+
+inp=$1
+if [ ! -e $inp ]; then
+    echo "ERROR: Can't open $inp"
+    usage
+fi
+
+if [ $# -ge 2 ]; then
+    prefix=$2
+    if [ $# -eq 3 ]; then
+	njobs=$3
+    else
+	njobs=$(nproc)
+    fi
+else
+    prefix="case"
+    njobs=$(nproc)
+fi
+
+echo $inp $prefix $njobs