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 includes a rich feature set, and its core volumes are simultaneously the IEEE Portable Operating System Interface (POSIX) standard and the ISO/IEC 9945 standard.
unix - what does '$?' mean in a shell script? - Stack Overflow
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I've created an alias: alias pretty='python -mjson.tool | pygmentize -l json so that I can just run: command params | pretty. Hope this helps. PS: Should anyone manages to extend this to a) remove the curl-output I'm seeing every time and/or b) NOT sort the json keys; please do let me know, I will be highly thankful.
unix - How can I pretty-print JSON in a shell script? - Stack Overflow
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The first edition Unix Programmer's Manual dated defines the Unix time as "the time since 00:00:00, Jan. 1, 1971, measured in sixtieths of a second". Because of [the] limited range, the epoch was redefined more than once, before the rate was changed to 1 Hz and the epoch was set to its present value.