From a570400bc4507f690caf505310704214e60c4249 Mon Sep 17 00:00:00 2001 From: subh Date: Tue, 14 Apr 2026 03:50:31 +0530 Subject: changes --- stuff/index.html | 4 ++ stuff/usb-notif-linux.html | 140 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 144 insertions(+) create mode 100644 stuff/usb-notif-linux.html diff --git a/stuff/index.html b/stuff/index.html index 6e73ad8..21d70eb 100644 --- a/stuff/index.html +++ b/stuff/index.html @@ -94,6 +94,10 @@ DNS over TLS (DoT) with Cloudflare 2026-04-14 +
  • + USB notifications with udev + 2026-04-14 +
    • diff --git a/stuff/usb-notif-linux.html b/stuff/usb-notif-linux.html new file mode 100644 index 0000000..1f35212 --- /dev/null +++ b/stuff/usb-notif-linux.html @@ -0,0 +1,140 @@ + + + + + + subh.space + + + + +

    Configuring USB notifications on Linux

    + +

    If you want to receive a small notification as soon as a USB storage device is plugged in or plugged out. You're in the right place

    + +

    Your system detects a USB device upon connection or disconnection using an utility named udev. udev allows for defining rules which can allow a user to perform a specific task when a USB device is connected or disconnected. This can be combined with notify-send to send notifications to a user as soon as a USB device is connected or disconnected

    + +

    1. Creating a udev rule

    + +

    Below is a rule file, which will trigger two scripts depending upon the connection or disconnection of a USB device

    + +
    ACTION=="add", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk",  RUN+="/usr/local/bin/usb-notify-add.sh '$env{ID_MODEL}'"
+ACTION=="remove", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk",  RUN+="/usr/local/bin/usb-notify-rem.sh '$env{ID_MODEL}'"
+
    + +

    save this in a .rules file under /etc/udev/rules.d/.

    + +

    2. Configuring the scripts

    + +

    Below are the scripts:

    + + + +
    #!/bin/bash
+DEVICE_NAME=${1:-"Unknown USB Device"}
+
+USER_ID=$(id -u <your-username>)
+export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$USER_ID/bus
+
+sudo -u <your-username> DBUS_SESSION_BUS_ADDRESS=$DBUS_SESSION_BUS_ADDRESS /usr/bin/notify-send "USB Connected" "Device: $DEVICE_NAME"
+
    + + + +
    #!/bin/bash
+DEVICE_NAME=${1:-"Unknown USB Device"}
+
+USER_ID=$(id -u <your-username>)
+export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$USER_ID/bus
+
+sudo -u <your-username> DBUS_SESSION_BUS_ADDRESS=$DBUS_SESSION_BUS_ADDRESS /usr/bin/notify-send "USB Disconnected" "Device: $DEVICE_NAME"
+
    + +

    Save both the scripts under /usr/local/bin and make them executable with chmod

    + +

    3. Reloading the udev rules

    + +

    Once all the files have been saved. Reload udev rules as follows:

    + +
    sudo udevadm control --reload-rules
+sudo udevadm trigger
+
    + +

    And just like that, you've setup USB notifications. Give it a try! Plug in a USB device and check whether your system sends your a notification with the name of the USB device.

    + + + -- cgit v1.2.3