Provided by: dateutils_0.2.5-1_amd64
dconv - Convert dates between calendars or time zones
dconv [OPTION]... [DATE/TIME]...
dconv 0.2.5 Convert DATE/TIMEs between calendrical systems. If DATE/TIME is omitted date/times are read from stdin. DATE/TIME can also be one of the following specials - `now' interpreted as the current (UTC) time stamp - `time' the time part of the current (UTC) time stamp - `today' the current date (according to UTC) - `tomo[rrow]' tomorrow's date (according to UTC) - `y[ester]day' yesterday's date (according to UTC) -h, --help Print help and exit -V, --version Print version and exit -q, --quiet Suppress message about date/time and duration parser errors. -f, --format=STRING Output format. This can either be a specifier string (similar to strftime()'s FMT) or the name of a calendar. -i, --input-format=STRING Input format, can be used multiple times. Each date/time will be passed to the input format parsers in the order they are given, if a date/time can be read successfully with a given input format specifier string, that value will be used. --default=DT For underspecified input use DT as a fallback to fill in missing fields. Must be a date/time in ISO8601 format. If omitted the default value is the current date/time. -e, --backslash-escapes Enable interpretation of backslash escapes in the output and input format specifier strings. -S, --sed-mode Copy parts from the input before and after a matching date/time. Note that all occurrences of date/times within a line will be processed. --from-zone=ZONE Interpret dates on stdin or the command line as coming from the time zone ZONE. -z, --zone=ZONE Convert dates printed on stdout to time zone ZONE, default: UTC.
% dconv 2012-03-01 2012-03-01 % dconv -i "%d/%b/%y" 01/Mar/12 2012-03-01 % dconv -f "%d/%b/%y" 2012-03-01 01/Mar/12 % dconv -f "%d/%b/%y" -i "%OY %Om %Od" "MCMXCVIII IX XVII" 17/Sep/98 % dconv 12:03:01 12:03:01 % dconv -i "%I:%M:%S %p" "11:22:33 PM" 23:22:33 % dconv '2012-03-01 00:00:00' 2012-03-01T00:00:00 % dconv 2012-03-01T12:34:56 2012-03-01T12:34:56 % dconv --zone America/Chicago <<EOF 2012-03-01T07:05:06 2012-03-01T08:12:34 2012-03-11T01:05:06 2012-03-11T02:05:06 2012-03-11T07:05:06 2012-03-11T08:05:06 2012-03-11T17:05:06 EOF 2012-03-01T01:05:06 2012-03-01T02:12:34 2012-03-10T19:05:06 2012-03-10T20:05:06 2012-03-11T01:05:06 2012-03-11T03:05:06 2012-03-11T12:05:06 % dconv --from-zone America/Chicago <<EOF 2012-03-01T01:05:06 2012-03-01T02:12:34 2012-03-10T19:05:06 2012-03-10T20:05:06 2012-03-11T01:05:06 2012-03-11T03:05:06 2012-03-11T12:05:06 EOF 2012-03-01T07:05:06 2012-03-01T08:12:34 2012-03-11T01:05:06 2012-03-11T02:05:06 2012-03-11T07:05:06 2012-03-11T08:05:06 2012-03-11T17:05:06 % dconv --from-zone America/Chicago -z Europe/Berlin '2012-03-01 12:00' -i '%F %H:%M' -f '%F %T' 2012-03-01 19:00:00
Format specs in dateutils are similar to posix' strftime(). However, due to a broader range of supported calendars dateutils must employ different rules. Date specs: %a The abbreviated weekday name %A The full weekday name %_a The weekday name shortened to a single character (MTWRFAS) %b The abbreviated month name %B The full month name %_b The month name shortened to a single character (FGHJKMNQUVXZ) %c The count of the weekday within the month (range 00 to 05) %C The count of the weekday within the year (range 00 to 53) %d The day of the month, 2 digits (range 00 to 31) %D The day of the year, 3 digits (range 000 to 366) %F Equivalent to %Y-%m-%d (ymd's canonical format) %j Equivalent to %D %m The month in the current calendar (range 00 to 19) %Q The quarter of the year (range Q1 to Q4) %q The number of the quarter (range 01 to 04) %s The number of seconds since the Epoch. %u The weekday as number (range 01 to 07, Sunday being 07) %U The week count, first day of week is Sun (range 00 to 53) %V The ISO week count, first day of week is Mon (range 01 to 53) %w The weekday as number (range 00 to 06, Sunday being 00) %W The week count, first day of week is Mon (range 00 to 53) %y The year without a century (range 00 to 99) %Y The year including the century %Od The day as roman numerals %Om The month as roman numerals %Oy The two digit year as roman numerals %OY The year including the century as roman numerals %rs In time systems whose Epoch is different from the unix Epoch, this selects the number of seconds since then. %rY In calendars with years that don't coincide with the Gregorian years, this selects the calendar's year. %dth The day of the month as an ordinal number, 1st, 2nd, 3rd, etc. %mth The month of the year as an ordinal number, 1st, 2nd, 3rd, etc. %db The business day of the month (since last month's ultimo) %dB Number of business days until this month's ultimo Time specs: %H The hour of the day using a 24h clock, 2 digits (range 00 to 23) %I The hour of the day using a 12h clock, 2 digits (range 01 to 12) %M The minute (range 00 to 59) %N The nanoseconds (range 000000000 to 999999999) %p The string AM or PM, noon is PM and midnight is AM. %P Like %p but in lowercase %S The second (range 00 to 60, 60 is for leap seconds) %T Equivalent to %H:%M:%S General specs: %n A newline character %t A tab character %% A literal % character Modifiers: %O Modifier to turn decimal numbers into Roman numerals %r Modifier to turn units into real units th Suffix. Read and print ordinal numbers b Treat date as business date By design dates before 1601-01-01 are not supported. For conformity here is a list of calendar spec names and their meaning: ymd %Y-%m-%d ymcw %Y-%m-%c-%w ywd %rY-W%V-%u bizda %Y-%m-%db
Written by Sebastian Freundt <email@example.com>
Report bugs to: https://github.com/hroptatyr/dateutils/issues
The full documentation for dconv is maintained as a Texinfo manual. If the info and dconv programs are properly installed at your site, the command info (dateutils)dconv should give you access to the complete manual.