ONOS dev bash_profile function -

make vicell open file for current cell when no cell is specified

Change-Id: Ic561fcafe469531b57199de156f8db12a0e0d063

@@ -154,13 +154,14 @@ function nuke {
 function vicell {
     local apply=false
     local create=false
-    local cdf=""
+    local ${cdf:=$ONOS_CELL}
     local cpath="${ONOS_ROOT}/tools/test/cells/"
 
-    if [ -z "$1" ] || [ "$1" = "-h" ] ; then
+    if [ "$1" = "-h" ] ; then
         printf "usage: vicell [file] [options]\n\noptions:\n"
+        printf "\t[file]: cell name (default: current cell)\n"
         printf "\t-a: apply the cell after editing\n"
-        printf "\t-e: [editor] set EDITOR to [editor] (default *vi*)\n"
+        printf "\t-e: [editor] set EDITOR to [editor] (default: *vi*)\n"
         printf "\t-c: create cell file if none exist\n\n"
         return 1
     fi
@@ -175,7 +176,7 @@ function vicell {
         shift
     done
 
-    if [ ! -e "${cpath}${cdf}" ] && [ "$create" = "false" ]; then
+    if [ ! -e "${cpath}${cdf}" ] && ! ($create) ; then
         printf "${cdf} : no such cell\n" && return 1
     fi