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Tag: macos

How to pick a free port for a subprocess?

I am writing a Python wrapper around Appium server. Appium accepts command-line parameter for a local port to bind to. Unfortunately, Appium cannot autoselect a free port for itself, so it either binds to explicitly specified port, or fails with EADDRINUSE. Even when telling it to bind to port 0, it will start successfully, but won’t display what port it

Linux layer on macOS [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question

pthread mutex does not work correctly on macOS

Currently I am learning POSIX threads on Linux. The following example is counting how many 3(int) there are in an integer array, which returns a correct answer on CentOS 6.5 but a wrong one on macOS 10.12.4. The answer should be 64 * 1024 * 1024 / 2 = 67,108,864 / 2 = 33,554,432. But the answer on macOS is

Sed: select first part of price

Seems that my sed command is not working. I am trying to select the 2 in $2.99. However, no matter how I seem to type the regex, it will only give the .99 I want to select everything (every number) that is not the dollar sign up to the period. Any suggestions? echo “$2.99” | sed -e ‘s:^([^\$]*).:the price is

How does Docker run a Linux kernel under macOS host?

I installed Docker on my macOS Sierra as follows. Note I don’t have VirtualBox installed. My macOS details. Once I run Docker from launchpad, I am able to run Docker containers. My question is how does Docker manage to run a Linux kernel within macOS? I thought Docker would at least require boot2docker or some other such Linux kernel running

Integrate ffmpeg to unity via plugin OS X and Linux

I need to use a ffmpeg wrapper (so we can use it in unity) for a lecture. Unfortunately the teachers only provide a solution to do this for Windows. They are referring to https://github.com/Ruslan-B/FFmpeg.AutoGen which we should use to generate a wrapper for our OS. That’s where my problems begin: I have downloaded ffmpeg via macport, but I have no

df –total command for mac?

I want to use command line to retrieve the total disk space on a machine as one value. On most Linux machines, the “df –total” returns such a value at the end of the regular df output. On osx9, 10, 11, and 12, there seems to be no option like this. Same issue with older linux os, redhat5, centos5, etc.

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