1PDD(1) User Commands PDD(1)
2
6 pdd - Tiny date, time difference calculator with timers.
7
9 pdd [OPTIONS] [KEYWORDS ...]
10
12 pdd (python3 date diff) is a small utility to calculate date and time
13 difference. It can also be used as a timer. If no program arguments are
14 specified it shows the current date, time and timezone.
15 Features
17 - easy to use, minimal dependencies
19 - calculate date and time difference
20 - add, subtract duration (timeslice) to/from date (time)
21 - calculate diff from today and now
22 - countdown timer with command piggybacking
23 - custom resolution stopwatch
24 - non-verbose mode for background timers
25 - show current date, time and timezone
26 - follows ISO 8601
27 Operational notes
29 - ISO 8601 format. Month can be specified as month number (e.g. Jan -
31 1, Dec - 12).
32 - Time is in 24-hr format.
33 - The absolute difference is shown. Argument order is ignored.
34 - The end date is excluded in date difference calculations.
35 - Hour, minute or second can be omitted. Partial inputs are recognized
36 as mm:ss or ss.
37 - The keybind to stop timers is Ctrl-C.
38
40 -h, --help
41 Show help text and exit.
42 -d yyyy mmm dd [yyyy mmm dd | y m d]
44 Calculate date difference.
45 -t hh:mm:ss [hh:mm:ss | h:m:s]
47 Calculate time difference.
48 --add Add a duration or timeslice to date (/today) or time (/now).
50 --sub Subtract a duration or timeslice from date (/today) or time
52 (/now).
53 --day yyyy mmm dd
55 Show the day of the week on a date.
56 -c hh:mm:ss
58 Set a countdown timer with duration in hours, minutes and sec‐
59 onds.
60 -r command
62 Run command when countdown timer reaches 0.
63 -s [resolution]
65 Start a custom resolution stopwatch. resolution can range from 1
66 to 9. Default 3 for millisecond.
67 -q Quiet mode for a countdown timer or stopwatch to be run in the
69 background. The counter is shown only when Ctrl-C is pressed.
70
72 1. Calculate diff from today:
73 $ pdd 2014 Jan 15
75 2. Calculate diff from now:
77 $ pdd 24:00:00
79 $ pdd 0
80 3. Calculate date diff:
82 $ pdd -d 1983 jul 3 2014 1 15
84 4. Calculate time diff:
86 $ pdd -t 45:50 6:17:33
88 5. Show current date, time and timezone:
90 $ pdd
92 6. Specify time with roll-over:
94 $ pdd -t 5:80:75 6:17:33
96 7. Add a duration (3 years, 2 months, 1 day) to 28 Feb, 2000:
98 $ pdd -d 2000 FEB 28 3 2 1 --add
100 8. Add a timeslice (1 hour 2 mins 3 secs) to 23:45:37:
102 $ pdd -t 23:45:37 1:2:3 --add
104 9. Add a duration (3 years, 2 months, 1 day) to today:
106 $ pdd 3 2 1 --add
108 10. Add a timeslice (1 hour 2 minutes 3 seconds) to now:
110 $ pdd 1:2:3 --add
112 11. Subtract a duration (1 day) from 1 Mar, 2000:
114 $ pdd -d 2000 Mar 01 0 0 1 --sub
116 12. Subtract a timeslice (1 sec) from midnight:
118 $ pdd -t 00:00:00 0:0:1 --sub
120 13. Subtract a duration (3 years, 2 months, 1 day) from today:
122 $ pdd 3 2 1 --sub
124 14. Subtract a timeslice (1 hour 2 minutes 3 seconds) from now:
126 $ pdd 1:2:3 --sub
128 15. Show the day of the week on 15 Jan 2014:
130 $ pdd --day 2014 Jan 15
132 16. Start a countdown timer or stopwatch in quiet mode in the back‐
134 ground:
135 $ pdd -qs &
137 $ pdd -qc 3:0:0 &
138 To see the final counter run fg and press Ctrl-C.
140 17. Run a command when countdown timer reaches 0:
142 $ pdd -c 00:00:5 -r 'ps -aux'
144 $ pdd -c 00:00:5 -r 'notify-send pdd expired'
145
147 Arun Prakash Jana <engineerarun@gmail.com>
148
150 https://github.com/jarun/pdd
151
153 https://github.com/jarun/pdd/issues
154
156 Copyright © 2017 Arun Prakash Jana <engineerarun@gmail.com>
157 License GPLv3+: GNU GPL version 3 or later
159 <http://gnu.org/licenses/gpl.html>.
160 This is free software: you are free to change and redistribute it.
161 There is NO WARRANTY, to the extent permitted by law.
162Version 1.5 10 Oct 2020 PDD(1)