uzinagased exemple code

exemple.sh

@@ -2,13 +2,20 @@
 
 DATAFILE=/tmp/fake-datafile
 
+#-----  collect the datas
 > ${DATAFILE}
 for s in $(seq 1 20)
 do
-
     v=$(./fake-values 2> /dev/null)
-    echo $s $v | tee -a ${DATAFILE}
+    echo $s $v >> ${DATAFILE}
 done
 
-awk '{print NR " " $2}' < ${DATAFILE}
+#-----  do dome useless computations
+awk	'
+	NR==1	{ debut = $2 }
+		{ print $2-debut, $3 }
+	'                                   \
+< ${DATAFILE}
+
+