The UNIX® Standard | www.opengroup.org
May 22, 2025 · Single UNIX Specification- “The Standard” The Single UNIX Specification is the standard in which the core interfaces of a UNIX OS are measured. The UNIX standard …
unix - What is the meaning of "POSIX"? - Stack Overflow
Nov 23, 2009 · Since every Unix does things a little differently -- Solaris, Mac OS X, IRIX, BSD, and Linux all have their quirks -- POSIX is especially useful to those in the industry as it …
How can I generate Unix timestamps? - Stack Overflow
Jul 30, 2009 · Related question is "Datetime To Unix timestamp", but this question is more general. I need Unix timestamps to solve my last question. My interests are Python, Ruby and …
How can I send an email through the UNIX mailx command?
Feb 17, 2010 · From the man page: Sending mail To send a message to one or more people, mailx can be invoked with arguments which are the names of people to whom the mail will be …
What is the proper way to exit a command line program?
2 Take a look at Job Control on UNIX systems If you don't have control of your shell, simply hitting ctrl + C should stop the process. If that doesn't work, you can try ctrl + Z and using the jobs …
shell - Listing only directories in UNIX - Stack Overflow
Sep 8, 2010 · I want to list only the directories in specified path (ls doesn't have such option). Also, can this be done with a single line command?
How can I convert bigint (UNIX timestamp) to datetime in SQL …
Adding n seconds to 1970-01-01 will give you a UTC date because n – the Unix timestamp – is the number of seconds that have elapsed since 00:00:00 Coordinated Universal Time (UTC), …
How can I convert a Unix timestamp to DateTime and vice versa?
Oct 30, 2008 · A Unix tick is 1 second (if I remember well), and a .NET tick is 100 nanoseconds. If you've been encountering problems with nanoseconds, you might want to try using AddTick …
unix - Why is 1/1/1970 the "epoch time"? - Stack Overflow
Jun 23, 2011 · The definition of unix time and the epoch date went through a couple of changes before stabilizing on what it is now. But it does not say why exactly 1/1/1970 was chosen in the …
How to convert DOS/Windows newline (CRLF) to Unix newline (LF)
Apr 10, 2010 · How can I programmatically (not using vi) convert DOS/Windows newlines to Unix newlines? The dos2unix and unix2dos commands are not available on certain systems. How …