Time Since Last Resume

It's handy to know when to take a break:

$ sinceresume.sh 0
14m

Supported OSes (patches welcome):

1. Pantheon Desktop
2. Ubuntu Desktop

Log the time when the system resumes from standby / sleep / hibernation

Reference: System-D Suspend Service

$ sudo nano /usr/lib/systemd/system-sleep/sinceresume
#!/bin/sh

case $1 in
  post)
    logger "sinceresume resumed"
    ;;
esac

Time since last resume

Going forward I maintain the fish version:

#!/usr/bin/env fish

set display_threshold (count $argv > 0; and math "$argv[1]"; or echo 20)

set current_unix_timestamp (date "+%s")

# Get time since last sleep / suspend / hibernate
set resume_entry (grep sinceresume /var/log/syslog | tail -n 1)
set resume_date (echo "$resume_entry" | awk '{print $1, $2, $3}')
set resume_ts (date -d "$resume_date" "+%s")
set minutes_since_resume (math "($current_unix_timestamp - $resume_ts) / 60")

# Get time since session / last unlock
switch "$XDG_SESSION_DESKTOP"
  case ubuntu
    set session_entry (journalctl -u session-2.scope  | grep "gkr-pam: unlocked login keyring" | tail -n 1)
  case pantheon
    set session_entry (journalctl -u systemd-logind.service | grep "New session" | tail -n 1)
  case '*'
    echo "Unsupported XDG_SESSION_DESKTOP $XDG_SESSION_DESKTOP!"
    exit 1
end
set session_date (echo "$session_entry" | awk '{print $1, $2, $3}')
set session_ts (date -d "$session_date" "+%s")
set minutes_since_session (math "($current_unix_timestamp - $session_ts) / 60")

set minutes (math floor (math min $minutes_since_session,$minutes_since_resume ))

if test $minutes -gt $display_threshold
  echo "$minutes"m
end

I've added this to my shell startup.