fixed manpath issue once again

.bashrc

@@ -250,8 +250,11 @@ NPM_PACKAGES="${HOME}/.npm-packages"
 export PATH="$NPM_PACKAGES/bin:$PATH"
 export EDITOR=vim
 
-unset MANPATH # delete if you already modified MANPATH elsewhere in your config
-export MANPATH="$NPM_PACKAGES/share/man:$(manpath)"
+if [ command -v manpath ]
+	then
+	unset MANPATH # delete if you already modified MANPATH elsewhere in your config
+	export MANPATH="$NPM_PACKAGES/share/man:$(manpath)"
+fi
 
 export LDFLAGS="-L/usr/local/opt/libffi/lib"
 export PKG_CONFIG_PATH="/usr/local/opt/libffi/lib/pkgconfig"