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 Operational notes
28 - ISO 8601 format. Month can be specified as month number (e.g. Jan -
30 1, Dec - 12).
31 - Time is in 24-hr format.
32 - The absolute difference is shown. Argument order is ignored.
33 - The end date is excluded in date difference calculations.
34 - Hour, minute or second can be omitted. Partial inputs are recognized
35 as mm:ss or ss.
36 - The keybind to stop timers is Ctrl-C.
37
39 -h, --help
40 Show help text and exit.
41 -d yyyy mmm dd [yyyy mmm dd | y m d]
43 Calculate date difference.
44 -t hh:mm:ss [hh:mm:ss | h:m:s]
46 Calculate time difference.
47 --add Add a duration or timeslice to date (/today) or time (/now).
49 --sub Subtract a duration or timeslice from date (/today) or time
51 (/now).
52 --day yyyy mmm dd
54 Show the day of the week on a date.
55 -c hh:mm:ss
57 Set a countdown timer with duration in hours, minutes and sec‐
58 onds.
59 -r command
61 Run command when countdown timer reaches 0.
62 -s [resolution]
64 Start a custom resolution stopwatch. resolution can range from 1
65 to 9. Default 3 for millisecond.
66 -q Quiet mode for a countdown timer or stopwatch to be run in the
68 background. The counter is shown only when Ctrl-C is pressed.
69
71 1. Calculate diff from today:
72 $ pdd 2014 Jan 15
74 2. Calculate diff from now:
76 $ pdd 24:00:00
78 $ pdd 0
79 3. Calculate date diff:
81 $ pdd -d 1983 jul 3 2014 1 15
83 4. Calculate time diff:
85 $ pdd -t 45:50 6:17:33
87 5. Show current date, time and timezone:
89 $ pdd
91 6. Specify time with roll-over:
93 $ pdd -t 5:80:75 6:17:33
95 7. Add a duration (3 years, 2 months, 1 day) to 28 Feb, 2000:
97 $ pdd -d 2000 FEB 28 3 2 1 --add
99 8. Add a timeslice (1 hour 2 mins 3 secs) to 23:45:37:
101 $ pdd -t 23:45:37 1:2:3 --add
103 9. Add a duration (3 years, 2 months, 1 day) to today:
105 $ pdd 3 2 1 --add
107 10. Add a timeslice (1 hour 2 minutes 3 seconds) to now:
109 $ pdd 1:2:3 --add
111 11. Subtract a duration (1 day) from 1 Mar, 2000:
113 $ pdd -d 2000 Mar 01 0 0 1 --sub
115 12. Subtract a timeslice (1 sec) from midnight:
117 $ pdd -t 00:00:00 0:0:1 --sub
119 13. Subtract a duration (3 years, 2 months, 1 day) from today:
121 $ pdd 3 2 1 --sub
123 14. Subtract a timeslice (1 hour 2 minutes 3 seconds) from now:
125 $ pdd 1:2:3 --sub
127 15. Show the day of the week on 15 Jan 2014:
129 $ pdd --day 2014 Jan 15
131 16. Start a countdown timer or stopwatch in quiet mode in the back‐
133 ground:
134 $ pdd -qs &
136 $ pdd -qc 3:0:0 &
137 To see the final counter run fg and press Ctrl-C.
139 17. Run a command when countdown timer reaches 0:
141 $ pdd -c 00:00:5 -r 'ps -aux'
143 $ pdd -c 00:00:5 -r 'notify-send pdd expired'
144
146 Arun Prakash Jana <engineerarun@gmail.com>
147
149 https://github.com/jarun/pdd
150
152 https://github.com/jarun/pdd/issues
153
155 Copyright © 2017 Arun Prakash Jana <engineerarun@gmail.com>
156 License GPLv3+: GNU GPL version 3 or later
158 <http://gnu.org/licenses/gpl.html>.
159 This is free software: you are free to change and redistribute it.
160 There is NO WARRANTY, to the extent permitted by law.
161Version 1.4 04 Apr 2019 PDD(1)