How To Make A File Name From Output Date

       FORMAT controls the output.  The only valid option for the second form  specifies  Coordinated
       Universal Time.  Interpreted sequences are:

       %%     a literal %

       %a     localeâs abbreviated weekday name (e.g., Sun)

       %A     localeâs full weekday name (e.g., Sunday)

       %b     localeâs abbreviated month name (e.g., Jan)

       %B     localeâs full month name (e.g., January)

       %c     localeâs date and time (e.g., Thu Mar  3 23:05:25 2005)

       %C     century; like %Y, except omit last two digits (e.g., 21)

       %d     day of month (e.g, 01)

       %D     date; same as %m/%d/%y

       %e     day of month, space padded; same as %_d

       %F     full date; same as %Y-%m-%d

       %g     last two digits of year of ISO week number (see %G)

       %G     year of ISO week number (see %V); normally useful only with %V

       %h     same as %b

       %H     hour (00..23)

       %I     hour (01..12)

       %j     day of year (001..366)

       %k     hour ( 0..23)

       %l     hour ( 1..12)

       %m     month (01..12)

       %M     minute (00..59)

       %n     a newline

       %N     nanoseconds (000000000..999999999)

       %p     localeâs equivalent of either AM or PM; blank if not known

       %P     like %p, but lower case

       %r     localeâs 12-hour clock time (e.g., 11:11:04 PM)

       %R     24-hour hour and minute; same as %H:%M

       %s     seconds since 1970-01-01 00:00:00 UTC

       %S     second (00..60)

       %t     a tab

       %T     time; same as %H:%M:%S

       %u     day of week (1..7); 1 is Monday

       %U     week number of year, with Sunday as first day of week (00..53)
      %V     ISO week number, with Monday as first day of week (01..53)

       %w     day of week (0..6); 0 is Sunday

       %W     week number of year, with Monday as first day of week (00..53)

       %x     localeâs date representation (e.g., 12/31/99)

       %X     localeâs time representation (e.g., 23:13:48)

       %y     last two digits of year (00..99)

       %Y     year

       %z     +hhmm numeric timezone (e.g., -0400)

       %:z    +hh:mm numeric timezone (e.g., -04:00)

       %::z   +hh:mm:ss numeric time zone (e.g., -04:00:00)

       %:::z  numeric time zone with : to necessary precision (e.g., -04, +05:30)

       %Z     alphabetic time zone abbreviation (e.g., EDT)

       By  default,  date  pads  numeric fields with zeroes.  The following optional flags may follow
       â%â:

              - (hyphen) do not pad the field _ (underscore) pad with spaces 0 (zero) pad with  zeros
              ^ use upper case if possible # use opposite case if possible

       After any flags comes an optional field width, as a decimal number; then an optional modifier,
       which is either E to use the localeâs alternate representations if available, or O to use  the
       localeâs alternate numeric symbols if available.