add a function in mkTmpfstab.sh for check arguments

operation/mkTmpfstab.sh

@@ -111,7 +111,7 @@ mdfyTmpFstab(){
     local UUIDFROMFSTAB=$(awk '/^[ \t]*[^#]/ { if ($1 ~ "^[UUID]") { print $1}}' $1)
     for i in $UUIDFROMFSTAB
     do
-	blkid -t$i >/tmp/.blkid.tmp 
+	blkid -t$i >/tmp/.blkid.tmp
 	local NAMEFROMUUID=`cut -f 1 -d : /tmp/.blkid.tmp`
 	if [ ! "${NAMEFROMUUID}" ];then
 	    echo "error UUID, can not find devices by blkid" >>$LOGDIR$LOGFILE
@@ -143,7 +143,24 @@ mdfyTmpFstab(){
 	sed -i s@$i@$LASTNAME@g $1
 	LASTNAME=''
     done
-    rm /tmp/.blkid.tmp 
+    rm /tmp/.blkid.tmp
+}
+
+###########################################################################
+# Function Name: checkArgument()
+# Input: $PATHFROM $PATHTO
+# Return: nothing 
+# Description: check the arguments
+###########################################################################
+checkArgument(){
+	if [ ! -f $1 ];then
+		echo "Can not find pathfrom $1"  >>$LOGDIR$LOGFILE
+		exit 1
+	fi
+	if [ ! $2 ];then
+		echo "pathto argument is empty!!"  >>$LOGDIR$LOGFILE
+		exit 1
+	fi
 }
 
 ###########################################################################
@@ -153,7 +170,7 @@ mdfyTmpFstab(){
 # Description: print the helped message
 ###########################################################################
 usage(){
-    echo "Usage: mkTmpfstab.sh [-h|--help] <-f|--from  oldfstab> <-t|--to  tmpfstab>"
+    echo "Usage: mkraid [-h|--help] <-f|--from  oldfstab> <-t|--to  tmpfstab>"
     echo "This shell is just used to modify a false of mkinitrd, when used UUID to specify a raid device in fstab the mkinitrd always analysis false, not only one devices would be found according to the UUID. So I write this shell for makeinitrd. The shell will take the old fstab(usually is /etc/fstab) to a temp place, then change the UUID to right device name in the temp fstab. The makeinitrd shell should use the temp fstab file to make the initrd and stay the old fstab, after make initrd remove the temp fstab."
     echo""
     echo "ARGUMENT:
@@ -197,6 +214,7 @@ NOWDATE=`date`
 echo $NOWDATE >>$LOGDIR$LOGFILE
 
 setArgument $@
+checkArgument $PATHFROM $PATHTO
 cpTmpfstab $PATHFROM $PATHTO
 mdfyTmpFstab $PATHTO
 echo "make temp fstab all right" >>$LOGDIR$LOGFILE