this post was submitted on 27 Dec 2025
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Put screen time in your bash prompt (mander.xyz)
submitted 1 day ago by podbrushkin@mander.xyz to c/linux@lemmy.ml
30 comments fedilink hide all child comments
 

Paste this into Bash:

get_screen_time() {
since=${1:-today}
until_opt=${2:+--until "$2"}

journalctl --output json -u systemd-logind --since "$since" $until_opt | \
jq -r 'select(.MESSAGE_ID and .__REALTIME_TIMESTAMP) |
if (.MESSAGE | test("Lid opened|Starting systemd-logind|Operation .suspend. finished")) then
  .__REALTIME_TIMESTAMP + " start"
elif (.MESSAGE | test("Lid closed|Stopping systemd-logind|system will suspend")) then
  .__REALTIME_TIMESTAMP + " stop"
else
  empty
end' | \
awk -v current_time=$(date +%s%6N) '
{
    if ($2 == "start") {
        last_start = $1
    } else if ($2 == "stop" && last_start != 0) {
        total += ($1 - last_start) / 1000000
        last_start = 0
    }
}
END {
    if (last_start != 0) {
        total += (current_time - last_start) / 1000000
    }
    seconds = int(total)
    hours = int(seconds/3600)
    minutes = int((seconds%3600)/60)
    printf "%02d:%02d", hours, minutes
}'
}
PS1='$(get_screen_time) '$PS1

Now you have screen time for today in your prompt:

00:21 user@asus:~/Documents$ 
00:21 user@asus:~/Documents$ cd ../Pictures/
00:21 user@asus:~/Pictures$

Cool?

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[–] utopiah@lemmy.ml 3 points 19 hours ago (1 children)

Interesting, I'd complete it with KDE Connect to add mobile usage.

[–] podbrushkin@mander.xyz 0 points 13 hours ago

I don’t know about android, but on iPhone only way to export screen time data is to screenshot it. Probably android is also restrictive.

[–] mina86@lemmy.wtf 6 points 1 day ago (2 children)

Honestly I don’t understand what this is showing. I guess it’s how long the lid was open?

Speaking of bash prompt: https://mina86.com/2015/bash-right-prompt/

[–] podbrushkin@mander.xyz 1 points 21 hours ago

If there is no lid (desktop pc), then it takes into account only systemd start and suspend messages, which is probably enough. Elegant!

[–] podbrushkin@mander.xyz 1 points 21 hours ago

Accumulative duration of working sessions. Work session is a period of time limited by any of “start” events and any of “end” events. E.g between “system started” and “suspend on”, or between “lid opened” and “system turn off”. Type of events determined by regex. Effectively it’s a screen time for most of people.

[–] mech@feddit.org 1 points 23 hours ago

\D