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Python: datetime.now().timestamp() 1 μs (*) 1 January 1970 RPG: CURRENT(DATE), %DATE CURRENT(TIME), %TIME: 1 s 1 January 0001 to 31 December 9999 CURRENT(TIMESTAMP), %TIMESTAMP: 1 μs Ruby: Time.now() [42] 1 μs (*) 1 January 1970 (to 19 January 2038 prior to Ruby 1.9.2 [43]) Scheme (get-universal-time) [44] 1 s 1 January 1900 Smalltalk: Time ...
When the command is issued with no options, it prints the history list. Users can supply options and arguments to the command to manipulate the display of the history list and its entries. The operation of the history command can also be influenced by a shell's environment variables. For example, an environment variable can be set to control ...
The UTC offsets are based on the current or upcoming database rules. This table does not attempt to document any of the historical data which resides in the database. In Ireland , what Irish law designates as "standard time" is observed during the summer, with clocks turned one hour ahead of UTC.
A full list of these data structures is virtually impossible to derive, but there are well-known data structures that have the Unix time problem: File systems that use 32 bits to represent times in inodes; Databases with 32-bit time fields; Database query languages (such as SQL) that have UNIX_TIMESTAMP()-like commands
Unix time [a] is a date and time representation widely used in computing. It measures time by the number of non-leap seconds that have elapsed since 00:00:00 UTC on 1 January 1970, the Unix epoch. For example, at midnight on 1 January 2010, Unix time was 1262304000. Unix time originated as the system time of Unix operating systems.
Software timekeeping systems vary widely in the resolution of time measurement; some systems may use time units as large as a day, while others may use nanoseconds.For example, for an epoch date of midnight UTC (00:00) on 1 January 1900, and a time unit of a second, the time of the midnight (24:00) between 1 January 1900 and 2 January 1900 is represented by the number 86400, the number of ...
A screenshot of the original 1971 Unix reference page for glob – the owner is dmr, short for Dennis Ritchie.. glob() (/ ɡ l ɒ b /) is a libc function for globbing, which is the archetypal use of pattern matching against the names in a filesystem directory such that a name pattern is expanded into a list of names matching that pattern.
On Unix-like operating systems, rdate is a tool for querying the current time from a network server and, optionally, setting the system time. Rdate uses the Time Protocol . The Time Protocol is generally considered obsolete and has been replaced by the Network Time Protocol (NTP).