Sponsored Content
Full Discussion: Macos is the UNIX?
Top Forums UNIX for Beginners Questions & Answers Macos is the UNIX? Post 303040007 by Corona688 on Monday 21st of October 2019 04:33:00 PM
Old 10-21-2019
In the literal, legal sense, UNIX means you had your operating system tested and certified as UNIX-compliant. Apple did this, and Linux hasn't (and perhaps can't, except for a tiny subset of configurations and features.)

In the same sense, Windows NT was partly compliant back in the day. They hastily added enough bolt-on modules and compatibility software it was compliant for a few narrow cases.
 

6 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

UNIX on MacOS X

I am interested in knowing if anyone out there has been using the BSD UNIX that underlies MacOS X. Is this an "industrial strength" version of UNIX? Can I run X-Windows on such a machine? How about TeXing, pythoning, PERLing or using other useful UNIX goodies near and dear to my shrunken... (1 Reply)
Discussion started by: ncmathsadist
1 Replies

2. UNIX for Dummies Questions & Answers

Vuze/MacOS X: Too many open files

1) How can I stop Vuze from reporting the following error: "Too many open files" ? 2) What directory do I need to be in to effectively utilize this command: sudo bash -c 'ulimit -n 8192; sudo -u username ./azureus' ? 3) Is this the maximum number of files that I can allot to Vuze on OS X... (1 Reply)
Discussion started by: JFraser1
1 Replies

3. UNIX for Beginners Questions & Answers

Memory leak with awk on MacOs

Dear all, I use awk quite a bit for data wrangling ... today I find weird behavior that I cannot wrap my head around. if I execute the following command (simplified to illustrate the behavior ... nothing to do with the real command) bash-3.2$ awk... (3 Replies)
Discussion started by: comm|getline
3 Replies

4. UNIX for Beginners Questions & Answers

UNIX tool on MacOS that can increase resolution of a file

hi, I am searching for a native tool on MacOS that can increase the resolution of a group of image files whose aspect ratios (file width versus height) vary widely. There are numerous files so I don't wish to do this manually. Someone suggested the sips command with the resampling option but... (5 Replies)
Discussion started by: Godtookapicture
5 Replies

5. OS X (Apple)

MacOS 10.15 Catalina Crashes and Freezes on Boot

Sadly, I have turned off my access to the Apple Developers Beta program after installing macOS 10.15 Catalina a few days ago. After the install, I rebooted by MacBook Air and it "hard froze" and we were heading out of town so I grabbed a backup MBA running Mojave. Then, after getting back at... (10 Replies)
Discussion started by: Neo
10 Replies

6. Programming

Campimeter.sh for macOS

Hi Neo... This is me too except for the attention span. As soon as I find a solution to something I let others better it. And as for doing something different I have done some bizarre stuff on here... <wink> /Me awaits the mickey take... ;oD OT: Here is a small snippet for a terminal window... (3 Replies)
Discussion started by: wisecracker
3 Replies
Epoch(3)						User Contributed Perl Documentation						  Epoch(3)

NAME
Time::Epoch - Convert between Perl epoch and other epochs SYNOPSIS
#!/usr/bin/perl -wl use Time::Epoch; my $perlsec = 966770660; # Sun Aug 20 07:24:21 2000 -0400 on Mac OS my $epochsec = perl2epoch($perlsec, 'macos', '-0400'); my $perlsec2 = epoch2perl($epochsec, 'macos', '-0400'); print $perlsec; print $perlsec2; print $epochsec; # correct time on Unix: print scalar localtime $perlsec; # correct time on Mac OS (-0400): print scalar localtime $epochsec; DESCRIPTION
Exports two functions, "perl2epoch" and "epoch2perl". Currently only goes between Perl (Unix) epoch and Mac OS epoch. This is in preparation for an eventual move of Perl to its own universal epoch, so we can get the system epoch of any platform that differs from Perl's. Epochs o macos Takes additional optional parameter of time zone differential. If time zone differential not supplied, we guess by getting the different between "localtime" and "gmtime" with <Time::Local::timelocal>. BUGS
o Hm. With the above test, "scalar localtime $perlsec" under my Linux box and "scalar localtime $epochsec" under my Mac OS box are off by one second from each other. Maybe a leap second thing? Odd. AUTHOR
Chris Nandor <pudge@pobox.com>, http://pudge.net/ Copyright (c) 2000-2003 Chris Nandor. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the Artistic License, distributed with Perl. SEE ALSO
perl(1), perlport(1), Time::Local. perl v5.16.2 2003-05-21 Epoch(3)
All times are GMT -4. The time now is 05:29 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy