Update all dot files

dot_bashrc

@@ -14,8 +14,10 @@ export PATH
 # Uncomment the following line if you don't like systemctl's auto-paging feature:
 # export SYSTEMD_PAGER=
 
-export VISUAL="$(which nvim)"
-export EDITOR="$(which nvim)"
+if [[ -n "$(command -v nvim)" ]]; then
+  export VISUAL="$(which nvim)"
+  export EDITOR="$(which nvim)"
+fi
 
 # User specific aliases and functions
 if [ -d ~/.bashrc.d ]; then