Remove seconds in uptime of powerline tmux

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In ~/.config/powerline/themes/tmux, create default.json with the following content:

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{
	"segments": {
		"right": [
			{
				"function": "powerline.segments.common.sys.uptime",
				"priority": 50,
				"args": {
					"shorten_len": 2
				}
			},
			{
				"function": "powerline.segments.common.sys.system_load",
				"priority": 50
			},
			{
				"function": "powerline.segments.common.time.date"
			},
			{
				"function": "powerline.segments.common.time.date",
				"name": "time",
				"args": {
					"format": "%H:%M",
					"istime": true
				}
			},
			{
				"function": "powerline.segments.common.net.hostname"
			}
		]
	}
}

The "shorten_len": 2 did the job.

References

1. https://powerline.readthedocs.io/en/master/configuration/segments/common.html#powerline.segments.common.sys.uptime ↩