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waybar-custom(5) File Formats Manual waybar-custom(5) NAME waybar - custom module DESCRIPTION The custom module displays either the output of a script or static text. To display static text, specify only the format field. CONFIGURATION Addressed by custom/<name> exec: typeof: string The path to the script, which should be executed. exec-if: typeof: string The path to a script, which determines if the script in exec should be executed. exec will be executed if the exit code of exec-if equals 0. hide-empty-text: typeof: bool Disables the module when output is empty, but format might contain additional static content. exec-on-event: typeof: bool default: true If an event command is set (e.g. on-click or on-scroll-up) then re-execute the script after executing the event command. return-type: typeof: string See return-type interval: typeof: integer The interval (in seconds) in which the information gets polled. Use once if you want to execute the module only on startup. You can update it manually with a signal. If no interval or signal is defined, it is assumed that the out script loops itself. If a signal is defined then the script will run once on startup and will only update with a signal. restart-interval: typeof: integer The restart interval (in seconds). Can't be used with the interval option, so only with continuous scripts. Once the script exits, it'll be re-executed after the restart-in- terval. signal: typeof: integer The signal number used to update the module. The number is valid between 1 and N, where SIGRTMIN+N = SIGRTMAX. If no interval is defined then a signal will be the only way to update the module. format: typeof: string default: {text} The format, how information should be displayed. On {text} data gets inserted. format-icons: typeof: array Based on the set percentage, the corresponding icon gets selected. The order is low to high. rotate: typeof: integer Positive value to rotate the text label (in 90 degree increments). max-length: typeof: integer The maximum length in character the module should display. min-length: typeof: integer The minimum length in characters the module should accept. align: typeof: float The alignment of the label within the module, where 0 is left- aligned and 1 is right-aligned. If the module is rotated, it will fol- low the flow of the text. justify: typeof: string The alignment of the text within the module's label, allowing op- tions 'left', 'right', or 'center' to define the positioning. on-click: typeof: string Command to execute when clicked on the module. on-click-middle: typeof: string Command to execute when middle-clicked on the module using mouse- wheel. on-click-right: typeof: string Command to execute when you right-click on the module. on-update: typeof: string Command to execute when the module is updated. on-scroll-up: typeof: string Command to execute when scrolling up on the module. on-scroll-down: typeof: string Command to execute when scrolling down on the module. smooth-scrolling-threshold: typeof: double Threshold to be used when scrolling. tooltip: typeof: bool default: true Option to disable tooltip on hover. tooltip-format: typeof: string The tooltip format. If specified, overrides any tooltip output from the script in exec. Uses the same format replacements as format. escape: typeof: bool default: false Option to enable escaping of script output. menu: typeof: string Action that popups the menu. menu-file: typeof: string Location of the menu descriptor file. There need to be an element of type GtkMenu with id menu menu-actions: typeof: array The actions corresponding to the buttons of the menu. expand: typeof: bool default: false Enables this module to consume all left over space dynamically. RETURN-TYPE When return-type is set to json, Waybar expects the exec-script to output its data in JSON format. This should look like this: {"text": "$text", "tooltip": "$tooltip", "class": "$class", "percentage": $percentage } The class parameter also accepts an array of strings. If nothing or an invalid option is specified, Waybar expects i3blocks style output. Values are newline separated. This should look like this: $text\n$tooltip\n$class* class is a CSS class, to apply different styles in style.css FORMAT REPLACEMENTS {text}: Output of the script. {percentage} Percentage which can be set via a json return type. {icon}: An icon from 'format-icons' according to percentage. EXAMPLES Spotify: "custom/spotify": { "format": " {text}", "max-length": 40, "interval": 30, // Remove this if your script is endless and write in loop "exec": "$HOME/.config/waybar/mediaplayer.sh 2> /dev/null", // Script in resources folder "exec-if": "pgrep spotify", "return-type": "json" } mpd: "custom/mpd": { "format": " {text}", //"max-length": 15, "interval": 10, "exec": "mpc current", "exec-if": "pgrep mpd", "on-click": "mpc toggle", "on-click-right": "sonata" } cmus: "custom/cmus": { "format": " {text}", //"max-length": 15, "interval": 10, "exec": "cmus-remote -C "format_print '%a - %t'"", // artist - title "exec-if": "pgrep cmus", "on-click": "cmus-remote -u", //toggle pause "escape": true //handle markup entities } Pacman "custom/pacman": { "format": "{text} ", "interval": "once", "exec": "pacman_packages", "on-click": "update-system", "signal": 8 } Alternate Pacman "custom/pacman": { "format": "{text} ", "interval": 3600, // every hour "exec": "checkupdates | wc -l", // # of updates "exec-if": "exit 0", // always run; consider advanced run conditions "on-click": "termite -e 'sudo pacman -Syu'; pkill -SIGRTMIN+8 waybar", // update system "signal": 8 } You can use the signal and update the number of available packages with pkill -RTMIN+8 waybar. STYLE • #custom-<name> • #custom-<name>.<class> • <class> can be set by the script. For more information see return- type 2025-04-17 waybar-custom(5)
NAME | DESCRIPTION | CONFIGURATION | RETURN-TYPE | FORMAT REPLACEMENTS | EXAMPLES | STYLE
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