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  2. time (Unix) - Wikipedia

    en.wikipedia.org/wiki/Time_(Unix)

    In a popular Unix shell Bash, time is a special keyword, that can be put before a pipeline (or single command), that measures time of entire pipeline, not just a singular (first) command, and uses a different default format, and puts empty line before reporting times:

  3. Unix time - Wikipedia

    en.wikipedia.org/wiki/Unix_time

    Unix time is used in the PE format for Windows executables. [21] Unix time is typically available in major programming languages and is widely used in desktop, mobile, and web application programming. Java provides an Instant object which holds a Unix timestamp in both seconds and nanoseconds. [22] Python provides a time library which uses Unix ...

  4. Snowflake ID - Wikipedia

    en.wikipedia.org/wiki/Snowflake_ID

    Discord also uses snowflakes, with their epoch set to the first second of the year 2015. [3] Instagram uses a modified version of the format, with 41 bits for a timestamp, 13 bits for a shard ID, and 10 bits for a sequence number. [8] Mastodon's modified format has 48 bits for a millisecond-level timestamp, as it uses the UNIX epoch. The ...

  5. List of POSIX commands - Wikipedia

    en.wikipedia.org/wiki/List_of_POSIX_commands

    This is a list of POSIX (Portable Operating System Interface) commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification (SUS). These commands can be found on Unix operating systems and most Unix-like operating systems.

  6. C date and time functions - Wikipedia

    en.wikipedia.org/wiki/C_date_and_time_functions

    The format string used in strftime traces back to at least PWB/UNIX 1.0, released in 1977. Its date system command includes various formatting options. [2] [3] In 1989, the ANSI C standard is released including strftime and other date and time functions. [4]

  7. Help:Cheatsheet - Wikipedia

    en.wikipedia.org/wiki/Help:Cheatsheet

    For advice on writing style and formatting in a bullet-point format, see Wikipedia:Styletips; For summaries of some Wikipedia protocols and conventions, see Wikipedia:Dos and don'ts; If you don't want to use wikitext markup, try Wikipedia:VisualEditor instead; To ask a question, see Wikipedia:Questions to locate the appropriate venue(s)

  8. Year 2038 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2038_problem

    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

  9. Unix timestamp - Wikipedia

    en.wikipedia.org/?title=Unix_timestamp&redirect=no

    This page was last edited on 21 September 2004, at 21:04 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.