无法安装

Some friends cannot install Apple developer tools command line tools，When installing, it will prompt "The software cannot be installed.，Because it is currently unavailable from the software update server"，Let me teach you how to install it manually。 What are command line tools? Command Line Tools is a small standalone package from Apple，Available for macOS，Expanded the terminal with additional functionality。including but not limited to：svn、git、make、GCC、clang、perl、size、strip、strings、libtool、cpp、what、codesign and many other commands found in Linux。 For ordinary users of macOS，Mainly use its signature function，It is to sign unsigned applications/applications with invalid signatures.。Because Apple’s apps are not signed or have invalid signatures, they will basically crash and fail to run.。 Generally speaking，All you need to do is open the terminal，Then execute xcode-select --install in the terminal and the installer will open.，Then follow the prompts to install it。However, some users will report an error if their network cannot connect to the Apple server.：The software cannot be installed，Because it is currently unavailable from the software update server。 Solved once prompted：The software cannot be installed，Because it is currently unavailable from the software update server，You need to manually go to the Apple Developer Download Center to download the offline installation package of command line tools.。 Open the Apple Developer Center：https://developer.apple.com(The server of Apple Developer Center is not in China，So it will be very slow to open，wait patiently) Click Account on the far right side of the top navigation，Then log in to your Apple ID and open the Developer Download Center：https://developer.apple.com/download/more/ Search for command line tools (press the Enter key after typing in the search box) Select the version suitable for your macOS system。 10.15.x Command Line can be downloaded...