Ruby strftime: Month without leading zero?

Question

Does Ruby's strftime have a format for the month without a leading zero?

I found %e for getting the day without the leading zero, but not having any luck with the month.

Ultimately wanting a date formatted like: 9/1/2010

Answer 1

Some versions of strftime do allow prefixing with minus to format out leading zeros, for eg:

strftime "%-d/%-m/%y" 

However this will depend on strftime on your system. So for consistency I would do something like this instead:

dt = Time.local(2010, 'Sep', 1) printf "%d/%d/%d", dt.day, dt.month, dt.year 

Answer 2

Here's the formatting list I go off of. This is from the docs for 2.1.3. According to this you would want %-m:

Date (Year, Month, Day):   %Y - Year with century (can be negative, 4 digits at least)           -0001, 0000, 1995, 2009, 14292, etc.   %C - year / 100 (rounded down such as 20 in 2009)   %y - year % 100 (00..99)    %m - Month of the year, zero-padded (01..12)           %_m  blank-padded ( 1..12)           %-m  no-padded (1..12)   %B - The full month name (``January'')           %^B  uppercased (``JANUARY'')   %b - The abbreviated month name (``Jan'')           %^b  uppercased (``JAN'')   %h - Equivalent to %b    %d - Day of the month, zero-padded (01..31)           %-d  no-padded (1..31)   %e - Day of the month, blank-padded ( 1..31)    %j - Day of the year (001..366)  Time (Hour, Minute, Second, Subsecond):   %H - Hour of the day, 24-hour clock, zero-padded (00..23)   %k - Hour of the day, 24-hour clock, blank-padded ( 0..23)   %I - Hour of the day, 12-hour clock, zero-padded (01..12)   %l - Hour of the day, 12-hour clock, blank-padded ( 1..12)   %P - Meridian indicator, lowercase (``am'' or ``pm'')   %p - Meridian indicator, uppercase (``AM'' or ``PM'')    %M - Minute of the hour (00..59)    %S - Second of the minute (00..60)    %L - Millisecond of the second (000..999)        The digits under millisecond are truncated to not produce 1000.   %N - Fractional seconds digits, default is 9 digits (nanosecond)           %3N  millisecond (3 digits)           %6N  microsecond (6 digits)           %9N  nanosecond (9 digits)           %12N picosecond (12 digits)           %15N femtosecond (15 digits)           %18N attosecond (18 digits)           %21N zeptosecond (21 digits)           %24N yoctosecond (24 digits)        The digits under the specified length are truncated to avoid        carry up.  Time zone:   %z - Time zone as hour and minute offset from UTC (e.g. +0900)           %:z - hour and minute offset from UTC with a colon (e.g. +09:00)           %::z - hour, minute and second offset from UTC (e.g. +09:00:00)   %Z - Abbreviated time zone name or similar information.  Weekday:   %A - The full weekday name (``Sunday'')           %^A  uppercased (``SUNDAY'')   %a - The abbreviated name (``Sun'')           %^a  uppercased (``SUN'')   %u - Day of the week (Monday is 1, 1..7)   %w - Day of the week (Sunday is 0, 0..6)  ISO 8601 week-based year and week number: The first week of YYYY starts with a Monday and includes YYYY-01-04. The days in the year before the first week are in the last week of the previous year.   %G - The week-based year   %g - The last 2 digits of the week-based year (00..99)   %V - Week number of the week-based year (01..53)  Week number: The first week of YYYY that starts with a Sunday or Monday (according to %U or %W). The days in the year before the first week are in week 0.   %U - Week number of the year. The week starts with Sunday. (00..53)   %W - Week number of the year. The week starts with Monday. (00..53)  Seconds since the Epoch:   %s - Number of seconds since 1970-01-01 00:00:00 UTC.  Literal string:   %n - Newline character (\n)   %t - Tab character (\t)   %% - Literal ``%'' character  Combination:   %c - date and time (%a %b %e %T %Y)   %D - Date (%m/%d/%y)   %F - The ISO 8601 date format (%Y-%m-%d)   %v - VMS date (%e-%^b-%4Y)   %x - Same as %D   %X - Same as %T   %r - 12-hour time (%I:%M:%S %p)   %R - 24-hour time (%H:%M)   %T - 24-hour time (%H:%M:%S) 

Updated to latest 2.1.3 docs on 10/24/14