fyi1
Send desktop notifications
Usage
fyi [OPTION] ...
TITLE
[MESSAGE]
fyi --close=ID
fyi --server-info
fyi --server-capabilities
Overview
fyi is a command line utility to send desktop notifications to the user via a notification daemon implementing XDG desktop notifications.
It is similar to the well-known notify-send(1) utility. Indeed, most of the options are identical.
When used without any options, fyi sends the notification and immediately exits, without printing anything on stdout.
Use --print-id to have fyi print the daemon assigned notification ID on stdout, in the format:
id=ID
To see why the notification was closed, use --print-reason. The reason is printed on stdout, in the format:
reason=REASON
fyi can also block until the notification has been closed, using the --wait option. Sending SIGINT to the fyi process will force-close the notification.
fyi will also block if the notification has any actions. When an action is triggered, fyi prints the name of the action on stdout, in the format:
action=NAME
Some notification daemons can send an "activation token". This is typically done when the user clicks the notification, or triggers the default action. The token can be used to focus (activate) a window. To see the token, use --print-token. The token is printed on stdout, in the format:
xdgtoken=TOKEN
Options
-
-a,--app-name=NAME -
Application name. Notification daemons will either display it as text, or use it to select an icon to show (unless
--iconis used). Default: fyi
-
-i,--icon=ICON -
Icon to display, either as a symbolic icon name (e.g. firefox) or a filename. Default: none
-
-u,--urgency=low|normal|critical -
Notification urgency. Shortcut for
--hint=byte:urgency:0|1|2. Default: normal.
-
-c,--category=CATEGORY -
Notification category. Shortcut for
--hint=string:category:CATEGORY. Default: none.
-
-A,--action=NAME:LABEL -
Defines an action to display (e.g. as a button, or in a list, depending on notification daemon). LABEL is what the notification daemon will display for the user. When the user triggers an action,
fyiwill print the corresponding NAME, in the format:action=NAMEThis option can be specified multiple times, to define multiple actions.
Using this option implies
--wait.
-
-H,--hint=TYPE:NAME:VALUE -
Defines a custom hint. How these are interpreted depends on the notification daemon. One common use case is to display a progress bar of some kind; most notification daemon recognizes
int:value:<percent>.Another common hint is
string:x-canonical-private-synchronous:<name>. Many notification daemons will replace any existing notification with the same name. This is similar to--replaces, except you do not need a notification ID.fyirecognizes the following types:- •
-
boolean
- •
-
byte
- •
-
int
- •
-
double
- •
-
string
-
-r,--replaces=ID -
If there is an existing notification with the specified ID, replace it. Otherwise, create a new notification.
-
-t,--expire-time=TIME -
The notification will be closed automatically after TIME milliseconds.
-
--transient -
By-pass the server's persistence capability, if any. Shortcut for
--hint=boolean:transient=true.
-
-C,--close=ID -
If there is an existing notification with the specified ID, close it.
-
-p,--print-id -
Print the daemon assigned notification ID, in the format
id=ID.
-
-R,--print-reason -
Print the reason the notification was closed, in the format:
- •
-
reason=expired
- •
-
reason=dismissed
- •
-
reason=force-closed
- •
-
reason=unknown
Using this option implies
--wait.
-
-T,--print-token -
Print the activation token, if any, in the format:
xdgtoken=TOKENSome notification daemons send an activation token when the notification is dismissed; either when the notification is clicked, or the default action is invoked. Others will send it regardless of which action was invoked. Some will only send it when an action is invoked, while others will send it when the notification is dismissed, regardless of how.
The token can be used to focus (activate, raise) a window. It is not directly useable by
fyi, but programs usingfyias a helper to display notifications can use it.Using this option implies
--wait.
-
-w,--wait -
Wait for the notification to be closed before exiting. If the user triggered an action, the name of the action will be printed (see
-A,--action).This option is implied when the any of the following options are used:
- •
-
-A,--action
- •
-
-R,--print-reason
- •
-
-T,--print-token
-
--image-data=FILE -
Sets the
image-datahint in the notification, with the raw pixel data from FILE. The data is assumed to be raw RGBA data. You must also provide the image size, see--image-size.
-
--image-size=WIDTHxHEIGHT -
The dimensions of the image loaded by
--image-data.
-
--server-info -
Display notification daemon name and version.
-
--server-capabilities -
Display notification daemon capabilities.
-
-v,--version -
Show the version number and quit.
History
- Arch Linux 2026-11-01: the text shown here
- Debian 13 (Trixie)