added check to custom polybar modules

files/.config/polybar/bluetooth.bash

@@ -1,5 +1,6 @@
 #!/bin/bash
 
+if which rfkill >/dev/null && [[ -f /dev/rfkill ]]; then
     if rfkill list bluetooth | grep "yes" >/dev/null; then
 	    if [[ "$1" == "toggle"  ]]; then
 		    rfkill unblock bluetooth
@@ -11,4 +12,5 @@ else
 	    fi
 	    echo "$ICO_BLU_ON"
     fi
+fi
 

files/.config/polybar/openvpn.bash

@@ -1,7 +1,10 @@
 #!/bin/bash
 
+if which openvpn >/dev/null; then
     if ! pgrep "openvpn" &>/dev/null || ! ip link | grep -q tun; then
 	    echo "$ICO_VPN_OFF "
     else
 	    echo "$ICO_VPN_ON "
     fi
+fi
+

files/.config/polybar/wifi_toggle.bash

@@ -1,8 +1,10 @@
 #!/bin/bash
 
+if which rfkill >/dev/null && [[ -f /dev/rfkill ]]; then
     if rfkill list wifi | grep "yes" >/dev/null; then
         rfkill unblock wifi
     else
         rfkill block wifi
     fi
+fi
 

files/.profile

@@ -9,7 +9,7 @@ export EDITOR=nvim
 export PAGER=less
 
 # motd
-export MOTD_SERVICES="$MOTD_SERVICES docker.socket libvirtd"
+export MOTD_SERVICES="$MOTD_SERVICES docker.socket"
 
 # firefox
 export MOZ_USE_XINPUT2=1