hyprland-wiki/pages/IPC/_index.md

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Hyprland exposes 2 UNIX Sockets, for controlling / getting info about Hyprland
via code / bash utilities.
## Hyprland Instance Signature (HIS)
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```sh
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echo $HYPRLAND_INSTANCE_SIGNATURE
```
# /tmp/hypr/\[HIS\]/.socket.sock
Used for hyprctl-like requests. See the
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[Hyprctl page](../Configuring/Using-hyprctl) for
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commands.
basically, write `command args`.
# /tmp/hypr/\[HIS\]/.socket2.sock
Used for events. Hyprland will write to each connected client live events like
this:
`EVENT>>DATA\n` (\\n is a linebreak)
e.g.: `workspace>>2`
## Events list:
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| name | description | data |
| --- | --- | --- |
| workspace | emitted on workspace change. Is emitted ONLY when a user requests a workspace change, and is not emitted on mouse movements (see `activemon`) | `WORKSPACENAME` |
| focusedmon | emitted on the active monitor being changed. | `MONNAME,WORKSPACENAME` |
| activewindow | emitted on the active window being changed. | `WINDOWCLASS,WINDOWTITLE` |
| fullscreen | emitted when a fullscreen status of a window changes. | `0/1` (exit fullscreen / enter fullscreen) |
| monitorremoved | emitted when a monitor is removed (disconnected) | `MONITORNAME` |
| monitoradded | emitted when a monitor is added (connected) | `MONITORNAME` |
| createworkspace | emitted when a workspace is created | `WORKSPACENAME` |
| destroyworkspace | emitted when a workspace is destroyed | `WORKSPACENAME` |
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| activelayout | emitted on a layout change of the active keyboard | `KEYBOARDNAME,LAYOUTNAME` |
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| openwindow | emitted when a window is opened | `WINDOWADDRESS`,`WORKSPACENAME`,`WINDOWCLASS`,`WINDOWTITLE` |
| closewindow | emitted when a window is closed | `WINDOWADDRESS` |
| movewindow | emitted when a window is moved to a workspace | `WINDOWADDRESS`,`WORKSPACENAME` |
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{{< hint type=warning >}}
A fullscreen event is not guaranteed to fire on/off once in succession.
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A window might do for example 3 requests to be fullscreen'd, which would result
in 3 fullscreen events.
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{{< /hint >}}
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## How to use socket2 with bash
example script using socket2 events with bash and `socat`:
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```sh
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#!/bin/sh
function handle {
if [[ ${1:0:12} == "monitoradded" ]]; then
# do_something
fi
}
socat - UNIX-CONNECT:/tmp/hypr/$(echo $HYPRLAND_INSTANCE_SIGNATURE)/.socket2.sock | while read line; do handle $line; done
```