I was previously using the top-voted answer, but it needs a bit of cleanup, so here it is redone for Xcode 4, with some improvements. I’ve researched every file in this list, but several of them do not exist in Apple’s official Xcode documentation, so I had to go on Apple mailing lists. Apple continues … Read more
The Homebrew package manager includes launchctl plists to start automatically. For more information, run brew info postgres. Start manually pg_ctl -D /usr/local/var/postgres start Stop manually pg_ctl -D /usr/local/var/postgres stop Start automatically “To have launchd start postgresql now and restart at login:” brew services start postgresql What is the result of pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log … Read more
First run /usr/libexec/java_home -V which will output something like the following: Matching Java Virtual Machines (3): 1.8.0_05, x86_64: “Java SE 8” /Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/Home 1.6.0_65-b14-462, x86_64: “Java SE 6” /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home 1.6.0_65-b14-462, i386: “Java SE 6” /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home /Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/Home Pick the version you want to be the default (1.6.0_65-b14-462 for arguments sake) then: export JAVA_HOME=`/usr/libexec/java_home -v 1.6.0_65-b14-462` or you … Read more
There are a wealth of clipboards you could be dealing with. I expect you’re probably a Linux user who wants to put stuff in the X Windows primary clipboard. Usually, the clipboard you want to talk to has a utility that lets you talk to it. In the case of X, there’s xclip (and others). … Read more
Oracle has a poor record for making it easy to install and configure Java, but using Homebrew, the latest OpenJDK (Java 14) can be installed with: brew install –cask adoptopenjdk8 For the many use cases depending on an older version (commonly Java 8), the AdoptOpenJDK project makes it possible with an extra step. brew tap … Read more
You may have a bad connection in your xib. I’ve had this error many times. While TechZen’s answer is absolutely right in this case, another common cause is when you change the name of a IBOutlet property in your .h/.m which you’ve already connected up to File’s Owner in the nib. From your nib: Select … Read more
Important: This check should always be performed asynchronously. The majority of answers below are synchronous so be careful otherwise you’ll freeze up your app. Swift Install via CocoaPods or Carthage: https://github.com/ashleymills/Reachability.swift Test reachability via closures let reachability = Reachability()! reachability.whenReachable = { reachability in if reachability.connection == .wifi { print(“Reachable via WiFi”) } else { … Read more
Remove existing .DS_Store files from the repository: find . -name .DS_Store -print0 | xargs -0 git rm -f –ignore-unmatch Add this line: .DS_Store to the file .gitignore, which can be found at the top level of your repository (or create the file if it isn’t there already). You can do this easily with this command … Read more
TLDR. On any modern Mac python3 -m ensurepip then pip3 –version to check. pip’s documentation lists the supported mechanisms to install it: https://pip.pypa.io/en/stable/installation/#supported-methods It is generally recommended to avoid installing pip on the OS-provided python commands, and to install Python via the official installers or using something like Homebrew or pyenv. Python 3.4+ will have … Read more
On macOS Big Sur and later, use this command: sudo lsof -i -P | grep LISTEN | grep :$PORT or to just see just IPv4: sudo lsof -nP -i4TCP:$PORT | grep LISTEN On older versions, use one of the following forms: sudo lsof -nP -iTCP:$PORT | grep LISTEN sudo lsof -nP -i:$PORT | grep LISTEN … Read more