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Full Discussion: Difference between two dates
Top Forums UNIX for Beginners Questions & Answers Difference between two dates Post 302995302 by drl on Tuesday 4th of April 2017 10:22:42 AM
Old 04-04-2017
Hi.

See package dateutils, which can be found in many repositories, and includes ddiff:
Code:
NAME
       ddiff  -  Compute  duration from DATE/TIME (the reference date/time) to
       the other

SYNOPSIS
       ddiff [OPTION]... DATE/TIME [DATE/TIME]...

DESCRIPTION
       Compute duration from DATE/TIME (the reference date/time) to the  other
       DATE/TIMEs  given  and  print  the  result  as  duration.  If the other
       DATE/TIMEs are omitted read them from stdin.
...
       Time specs:
         %H  Durations in hours
         %I  Equivalent to %H
         %M  Durations in minutes
         %S  Durations in seconds
...

Some additional details:
Code:
dateutils.ddiff Compute duration from DATE/TIME (the reference date/ti... (man)
Path    : /usr/bin/dateutils.ddiff
Version : 0.3.1
Type    : ELF 64-bit LSB shared object, x86-64, version 1 (S ...)
Help    : probably available with -h,--help
Home    : https://github.com/hroptatyr/dateutils

The package utilities take some practice to learn, but are very useful for dealing with almost any form of date and time data.

Best wishes ... cheers, drl

Last edited by drl; 04-04-2017 at 01:59 PM.. Reason: Correct minor typo (spelling).
 

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ACCOUNTING(1)							      SMPPPD							     ACCOUNTING(1)

NAME
accounting - calculates statistics about your internet connections DESCRIPTION
accounting is a simple program to calculate statistics about your internet dial-up connections that are started and stopped by either ifup and ifdown or by a frontend to smpppd like cinternet , qinternet or kinternet. OPTIONS
These options are recognized by accounting. If a long option shows an argument as mandatory, then it is mandatory for the equivalent short option also. -l, --last=NUM Only consider the last NUM connections. -a, --after=DATE Only consider connections started after DATE. DATE is a date with optional time in ISO 8601 format, e.g. `2002-12-24 20:15:00'. Note that a date without time is treated as if the time is 00:00:00. Hence connections started on the specified date are consid- ered. -b, --before=DATE Only consider connections started before DATE. -u, --user=USER Only consider connections started by user USER. --this-year Only consider connections started this year. --last-year Only consider connections started last year. --this-month Only consider connections started this month. --last-month Only consider connections started last month. --this-week Only consider connections started this week. --last-week Only consider connections started last week. --today Only consider connections started today. --yesterday Only consider connections started yesterday. --per-year Show summaries on a per year basis. --per-month Show summaries on a per month basis. --per-week Show summaries on a per week basis. --per-day Show summaries on a per day basis. -c, --connections Only list the connections but do not show provider statistics. -p, --providers Do not list the connections only show the provider statistics. --connection-format=FORMAT The names of the columns to print in the connection list. The names must be separated by a comma. Known column names are time, type, provider, user, status, duration, rx, tx, rxtx, averx, avetx and averxtx. Each name may be appended by a colon and a number indicating the width for the column, e.g. provider:25. The value will not be truncated if the width is too small. --provider-format=FORMAT The names of the columns to print in the provider list equivalent to the --connection-format option. Known column names are provider, number, duration, rx, tx, rxtx, aveduration, averx, avetx and averxtx. --local Display all dates in local time. Also interpret dates on the command line in local time. This is the default. --utc Display all dates in UTC. Also interpret dates on the command line in UTC. --script[=STYLE] Format output for script. Known styles are c and sh. -f, --file=NAME Use a different file with accounting information. --report-errors Report erros in the accounting file. --version Show program version and exit. --help Show help information and exit. NOTES
All informations are only obtained through the accounting log. Hence the informations, esp. the data volume, of currently active connec- tions is not accurate. If you want the know the status of a connection, use ifstatus or a frontend to smpppd like cinternet , qinternet or kinternet instead. The user field is empty for connections started by a remote frontend of smpppd. BUGS
Not yet implemented for ISDN (ippp). FILES
/var/log/smpppd/accounting.log File containing accounting information. SEE ALSO
kinternet, qinternet, cinternet(1), smpppd(8), smpppd-ifcfg(8). AUTHOR
Arvin Schnell <arvin@suse.de> SuSE December 2002 ACCOUNTING(1)
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