Introduce function for uniq PATH

bashrc

@@ -15,5 +15,4 @@ for rc_file in $WORKSPACE/rc/*.sh; do
 done
 
 append_path "$LWS/bin"
-PATH="$(uniq_path)"
-
+set_uniq_path

rc/01-functions.sh

@@ -35,7 +35,16 @@ function uniq_path() {
   echo "$PATH" | tr ":" "\n" | awk '!seen[$0]++' | tr "\n" ":" | sed -r 's/:+/:/g' | sed -r 's/^:|:$//g'
 }
 
+function set_uniq_path() {
+  PATH="$(uniq_path)"
+}
+
+function is_alias() {
+  alias "$1" > /dev/null 2>&1
+}
+
 function can_run() {
   local application="$1"
   command -v "$application" > /dev/null
 }
+