battery-graph - Show a graph of the battery charge
battery-graph [
options] [
files...
]
Show a graph of the battery charge over time.
The files given are assumed to contain battery statistics in the
battery-stats(5) format. If no files are specified, the default log files will
be used.
The options can be used for displaying a different interval. An interval is
defined in terms of a
from timestamp, a
to timestamp and a
duration. By specifying any two, the third will be calculated
automatically. A missing duration will be defaulted to 3 hours.
These programs follow the usual GNU command line syntax, with long options
starting with two dashes (`-').
- -g geometry, --geometry geometry
- Sets the X Windows geometry of the graph. This disables
text mode. See X(7) for how to specify the geometry.
- -D display, --display display
- Shows the graph on the given display. The same effect can
be achieved by setting the DISPLAY environment variable. This disables
text mode. See X(7) for valid values.
- --title string
- Sets the title of the graph window. By default this will be
"Battery Graph". If this is set to the empty string, gnuplot(1)
will be allowed set the window title - this can be useful if you want your
~/.Xdefaults to take effect for this.
- -f date, --from date
- Specifies the start date/time for the graph. This accepts
exactly the same date/time specifications as the date (1) command -
see examples below or the Texinfo manual for date for details.
- -t date, --to date
- Specifies the ending date/time for the graph. This accepts
exactly the same date/time specifications as the date (1) command -
see examples below or the Texinfo manual for date for details.
- -s date, --since date
- Shorthand for --from date --to now
- -d duration, --duration duration
- Specifies the duration for the graph. This can be given in
units of seconds, hours, days or weeks by suffixing the number with 's'
(seconds), 'm' (minutes), 'h' (hours), 'd' (days) or 'w' (weeks).
Units cannot be combined - e.g. '1d6h' will not be valid, whereas '30h' is
OK. If no unit is specified, minutes will be assumed.
- --text
- Shows the graph in text mode on stdout. The resulting size
of the graph is determined by the values of the environment variables.
LINES and COLUMNS (failing that, the output from tput
will be used). This is the default when the environment variable DISPLAY
is not set.
- Show the last 2 hours:
- $ battery-graph --duration 2h
- Show the time since mid day:
- $ battery-graph --from 12:00 --to now
or
$ battery-graph --since 12:00
- Show the hour before last:
- $ battery-graph --from '2 hours ago' --duration 1h
- Show the 6 hours after noon:
- $ battery-graph --from 12:00 --duration 6h
or
$ battery-graph --from 12:00 --to 18:00
- Show the last 6 hours
- $ battery-graph --from '6 hours ago'
or
$ battery-graph --since '6 hours ago'
- Show the last 30 minutes in text mode:
- $ battery-graph --duration 30 --text
- Show statistics for Tuesday last week
- $ battery-graph --duration 24h --from 'tuesday last week'
or
$ battery-graph --duration 1d --from 'tuesday last week'
- Prove that the future hasn't happened yet:
- $ battery-graph --from yesterday --to tomorrow
- Another way of wasting CPU cycles:
- $ battery-graph /dev/null
battery-graph depends on
gnuplot (1) to give the correct exit status.
If no files are given on the command line, batter-graph reads from
/var/log/battery-stats
- DISPLAY
- If this variable is not set, --text will be defaulted.
- LINES / COLUMNS
- Determines the size of the graph in text mode.
If there are no statistics available for the period chosen, an empty graph will
result.
There is no requirement for the
from time to be earlier than the
to time - if so, the X axis will be reversed. Similar results can be
achieved using a negative duration.
Also: battery-stat is quite happy to list statistics in the future; stupid, but
obedient.
This manual page was written by Karl E. Jorgensen <
[email protected]>,
for the Debian GNU/Linux system (but may be used by others).
battery-stats (5),
date (1),
battery-stats-collector (8)
Newer versions of this program may (or may not) be available at
http://karl.jorgensen.com/battery-stats