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mac 安装 Homebrew

安装教程清华源

2021-04-12 15:19:40 星期一

/bin/zsh -c "$(curl -fsSL https://gitee.com/cunkai/HomebrewCN/raw/master/Homebrew.sh)"

1.下载 https://raw.githubusercontent.com/Homebrew/install/master/install.sh 并编辑其中的:

BREW_REPO="https://github.com/Homebrew/brew"
# 变成:
BREW_REPO="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git"

2.也可以直接复制下面的,

#!/bin/bash
set -u

# First check if the OS is Linux.
if [[ "$(uname)" = "Linux" ]]; then
 HOMEBREW_ON_LINUX=1
fi

# On macOS, this script installs to /usr/local only.
# On Linux, it installs to /home/linuxbrew/.linuxbrew if you have sudo access
# and ~/.linuxbrew otherwise.
# To install elsewhere (which is unsupported)
# you can untar https://github.com/Homebrew/brew/tarball/master
# anywhere you like.
if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
 HOMEBREW_PREFIX="/usr/local"
 HOMEBREW_REPOSITORY="/usr/local/Homebrew"
 HOMEBREW_CACHE="${HOME}/Library/Caches/Homebrew"

 STAT="stat -f"
 CHOWN="/usr/sbin/chown"
 CHGRP="/usr/bin/chgrp"
 GROUP="admin"
 TOUCH="/usr/bin/touch"
else
 HOMEBREW_PREFIX_DEFAULT="/home/linuxbrew/.linuxbrew"
 HOMEBREW_CACHE="${HOME}/.cache/Homebrew"

 STAT="stat --printf"
 CHOWN="/bin/chown"
 CHGRP="/bin/chgrp"
 GROUP="$(id -gn)"
 TOUCH="/bin/touch"
fi
BREW_REPO="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git"

# TODO: bump version when new macOS is released
MACOS_LATEST_SUPPORTED="10.15"
# TODO: bump version when new macOS is released
MACOS_OLDEST_SUPPORTED="10.13"

# For Homebrew on Linux
REQUIRED_RUBY_VERSION=2.6  # https://github.com/Homebrew/brew/pull/6556
REQUIRED_GLIBC_VERSION=2.13  # https://docs.brew.sh/Homebrew-on-Linux#requirements

# no analytics during installation
export HOMEBREW_NO_ANALYTICS_THIS_RUN=1
export HOMEBREW_NO_ANALYTICS_MESSAGE_OUTPUT=1

# string formatters
if [[ -t 1 ]]; then
 tty_escape() { printf "\033[%sm" "$1"; }
else
 tty_escape() { :; }
fi
tty_mkbold() { tty_escape "1;$1"; }
tty_underline="$(tty_escape "4;39")"
tty_blue="$(tty_mkbold 34)"
tty_red="$(tty_mkbold 31)"
tty_bold="$(tty_mkbold 39)"
tty_reset="$(tty_escape 0)"

have_sudo_access() {
 local -a args
 if [[ -n "${SUDO_ASKPASS-}" ]]; then
   args=("-A")
 fi

 if [[ -z "${HAVE_SUDO_ACCESS-}" ]]; then
   if [[ -n "${args[*]-}" ]]; then
     /usr/bin/sudo "${args[@]}" -l mkdir &>/dev/null
   else
     /usr/bin/sudo -l mkdir &>/dev/null
   fi
   HAVE_SUDO_ACCESS="$?"
 fi

 if [[ -z "${HOMEBREW_ON_LINUX-}" ]] && [[ "$HAVE_SUDO_ACCESS" -ne 0 ]]; then
   abort "Need sudo access on macOS (e.g. the user $USER to be an Administrator)!"
 fi

 return "$HAVE_SUDO_ACCESS"
}

shell_join() {
 local arg
 printf "%s" "$1"
 shift
 for arg in "$@"; do
   printf " "
   printf "%s" "${arg// /\ }"
 done
}

chomp() {
 printf "%s" "${1/"$'\n'"/}"
}

ohai() {
 printf "${tty_blue}==>${tty_bold} %s${tty_reset}\n" "$(shell_join "$@")"
}

warn() {
 printf "${tty_red}Warning${tty_reset}: %s\n" "$(chomp "$1")"
}

abort() {
 printf "%s\n" "$1"
 exit 1
}

execute() {
 if ! "$@"; then
   abort "$(printf "Failed during: %s" "$(shell_join "$@")")"
 fi
}

execute_sudo() {
 local -a args=("$@")
 if [[ -n "${SUDO_ASKPASS-}" ]]; then
   args=("-A" "${args[@]}")
 fi
 if have_sudo_access; then
   ohai "/usr/bin/sudo" "${args[@]}"
   execute "/usr/bin/sudo" "${args[@]}"
 else
   ohai "${args[@]}"
   execute "${args[@]}"
 fi
}

getc() {
 local save_state
 save_state=$(/bin/stty -g)
 /bin/stty raw -echo
 IFS= read -r -n 1 -d '' "$@"
 /bin/stty "$save_state"
}

wait_for_user() {
 local c
 echo
 echo "Press RETURN to continue or any other key to abort"
 getc c
 # we test for \r and \n because some stuff does \r instead
 if ! [[ "$c" == $'\r' || "$c" == $'\n' ]]; then
   exit 1
 fi
}

major_minor() {
 echo "${1%%.*}.$(x="${1#*.}"; echo "${x%%.*}")"
}

if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
 macos_version="$(major_minor "$(/usr/bin/sw_vers -productVersion)")"
fi

version_gt() {
 [[ "${1%.*}" -gt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -gt "${2#*.}" ]]
}
version_ge() {
 [[ "${1%.*}" -gt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -ge "${2#*.}" ]]
}
version_lt() {
 [[ "${1%.*}" -lt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -lt "${2#*.}" ]]
}

should_install_command_line_tools() {
 if [[ -n "${HOMEBREW_ON_LINUX-}" ]]; then
   return 1
 fi

 if version_gt "$macos_version" "10.13"; then
   ! [[ -e "/Library/Developer/CommandLineTools/usr/bin/git" ]]
 else
   ! [[ -e "/Library/Developer/CommandLineTools/usr/bin/git" ]] ||
     ! [[ -e "/usr/include/iconv.h" ]]
 fi
}

get_permission() {
 $STAT "%A" "$1"
}

user_only_chmod() {
 [[ -d "$1" ]] && [[ "$(get_permission "$1")" != "755" ]]
}

exists_but_not_writable() {
 [[ -e "$1" ]] && ! [[ -r "$1" && -w "$1" && -x "$1" ]]
}

get_owner() {
 $STAT "%u" "$1"
}

file_not_owned() {
 [[ "$(get_owner "$1")" != "$(id -u)" ]]
}

get_group() {
 $STAT "%g" "$1"
}

file_not_grpowned() {
 [[ " $(id -G "$USER") " != *" $(get_group "$1") "*  ]]
}

# Please sync with 'test_ruby()' in 'Library/Homebrew/utils/ruby.sh' from Homebrew/brew repository.
test_ruby () {
 if [[ ! -x $1 ]]
 then
   return 1
 fi

 "$1" --enable-frozen-string-literal --disable=gems,did_you_mean,rubyopt -rrubygems -e \
   "abort if Gem::Version.new(RUBY_VERSION.to_s.dup).to_s.split('.').first(2) != \
             Gem::Version.new('$REQUIRED_RUBY_VERSION').to_s.split('.').first(2)" 2>/dev/null
}

no_usable_ruby() {
 local ruby_exec
 IFS=$'\n' # Do word splitting on new lines only
 for ruby_exec in $(which -a ruby); do
   if test_ruby "$ruby_exec"; then
     return 1
   fi
 done
 IFS=$' \t\n' # Restore IFS to its default value
 return 0
}

outdated_glibc() {
 local glibc_version
 glibc_version=$(ldd --version | head -n1 | grep -o '[0-9.]*$' | grep -o '^[0-9]\+\.[0-9]\+')
 version_lt "$glibc_version" "$REQUIRED_GLIBC_VERSION"
}

if [[ -n "${HOMEBREW_ON_LINUX-}" ]] && no_usable_ruby && outdated_glibc
then
   abort "$(cat <<-EOFABORT
	Homebrew requires Ruby $REQUIRED_RUBY_VERSION which was not found on your system.
	Homebrew portable Ruby requires Glibc version $REQUIRED_GLIBC_VERSION or newer,
	and your Glibc version is too old.
	See ${tty_underline}https://docs.brew.sh/Homebrew-on-Linux#requirements${tty_reset}
	Install Ruby $REQUIRED_RUBY_VERSION and add its location to your PATH.
	EOFABORT
   )"
fi

# USER isn't always set so provide a fall back for the installer and subprocesses.
if [[ -z "${USER-}" ]]; then
 USER="$(chomp "$(id -un)")"
 export USER
fi

# Invalidate sudo timestamp before exiting (if it wasn't active before).
if ! /usr/bin/sudo -n -v 2>/dev/null; then
 trap '/usr/bin/sudo -k' EXIT
fi

# Things can fail later if `pwd` doesn't exist.
# Also sudo prints a warning message for no good reason
cd "/usr" || exit 1

####################################################################### script
if ! command -v git >/dev/null; then
   abort "$(cat <<EOABORT
You must install Git before installing Homebrew. See:
 ${tty_underline}https://docs.brew.sh/Installation${tty_reset}
EOABORT
)"
fi

if ! command -v curl >/dev/null; then
   abort "$(cat <<EOABORT
You must install cURL before installing Homebrew. See:
 ${tty_underline}https://docs.brew.sh/Installation${tty_reset}
EOABORT
)"
fi

if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
have_sudo_access
else
 if [[ -n "${CI-}" ]] || [[ -w "$HOMEBREW_PREFIX_DEFAULT" ]] || [[ -w "/home/linuxbrew" ]] || [[ -w "/home" ]]; then
   HOMEBREW_PREFIX="$HOMEBREW_PREFIX_DEFAULT"
 else
   trap exit SIGINT
   if [[ $(/usr/bin/sudo -n -l mkdir 2>&1) != *"mkdir"* ]]; then
     ohai "Select the Homebrew installation directory"
     echo "- ${tty_bold}Enter your password${tty_reset} to install to ${tty_underline}${HOMEBREW_PREFIX_DEFAULT}${tty_reset} (${tty_bold}recommended${tty_reset})"
     echo "- ${tty_bold}Press Control-D${tty_reset} to install to ${tty_underline}$HOME/.linuxbrew${tty_reset}"
     echo "- ${tty_bold}Press Control-C${tty_reset} to cancel installation"
   fi
   if have_sudo_access; then
     HOMEBREW_PREFIX="$HOMEBREW_PREFIX_DEFAULT"
   else
     HOMEBREW_PREFIX="$HOME/.linuxbrew"
   fi
   trap - SIGINT
 fi
 HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}/Homebrew"
fi

if [[ "$UID" == "0" ]]; then
 abort "Don't run this as root!"
elif [[ -d "$HOMEBREW_PREFIX" && ! -x "$HOMEBREW_PREFIX" ]]; then
 abort "$(cat <<EOABORT
The Homebrew prefix, ${HOMEBREW_PREFIX}, exists but is not searchable. If this is
not intentional, please restore the default permissions and try running the
installer again:
   sudo chmod 775 ${HOMEBREW_PREFIX}
EOABORT
)"
fi

if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
 if version_lt "$macos_version" "10.7"; then
   abort "$(cat <<EOABORT
Your Mac OS X version is too old. See:
 ${tty_underline}https://github.com/mistydemeo/tigerbrew${tty_reset}
EOABORT
)"
 elif version_lt "$macos_version" "10.10"; then
   abort "Your OS X version is too old"
 elif version_gt "$macos_version" "$MACOS_LATEST_SUPPORTED" || \
   version_lt "$macos_version" "$MACOS_OLDEST_SUPPORTED"; then
   who="We"
   what=""
   if version_gt "$macos_version" "$MACOS_LATEST_SUPPORTED"; then
     what="pre-release version"
   else
     who+=" (and Apple)"
     what="old version"
   fi
   ohai "You are using macOS ${macos_version}."
   ohai "${who} do not provide support for this ${what}."

   echo "$(cat <<EOS
This installation may not succeed.
After installation, you will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew\'s GitHub,
Discourse, Twitter or IRC. You are responsible for resolving any issues you
experience while you are running this ${what}.
EOS
)
"
 fi
fi

ohai "This script will install:"
echo "${HOMEBREW_PREFIX}/bin/brew"
echo "${HOMEBREW_PREFIX}/share/doc/homebrew"
echo "${HOMEBREW_PREFIX}/share/man/man1/brew.1"
echo "${HOMEBREW_PREFIX}/share/zsh/site-functions/_brew"
echo "${HOMEBREW_PREFIX}/etc/bash_completion.d/brew"
echo "${HOMEBREW_REPOSITORY}"

# Keep relatively in sync with
# https://github.com/Homebrew/brew/blob/master/Library/Homebrew/keg.rb
directories=(bin etc include lib sbin share opt var
            Frameworks
            etc/bash_completion.d lib/pkgconfig
            share/aclocal share/doc share/info share/locale share/man
            share/man/man1 share/man/man2 share/man/man3 share/man/man4
            share/man/man5 share/man/man6 share/man/man7 share/man/man8
            var/log var/homebrew var/homebrew/linked
            bin/brew)
group_chmods=()
for dir in "${directories[@]}"; do
 if exists_but_not_writable "${HOMEBREW_PREFIX}/${dir}"; then
   group_chmods+=("${HOMEBREW_PREFIX}/${dir}")
 fi
done

# zsh refuses to read from these directories if group writable
directories=(share/zsh share/zsh/site-functions)
zsh_dirs=()
for dir in "${directories[@]}"; do
 zsh_dirs+=("${HOMEBREW_PREFIX}/${dir}")
done

directories=(bin etc include lib sbin share var opt
            share/zsh share/zsh/site-functions
            var/homebrew var/homebrew/linked
            Cellar Caskroom Homebrew Frameworks)
mkdirs=()
for dir in "${directories[@]}"; do
 if ! [[ -d "${HOMEBREW_PREFIX}/${dir}" ]]; then
   mkdirs+=("${HOMEBREW_PREFIX}/${dir}")
 fi
done

user_chmods=()
if [[ "${#zsh_dirs[@]}" -gt 0 ]]; then
 for dir in "${zsh_dirs[@]}"; do
   if user_only_chmod "${dir}"; then
     user_chmods+=("${dir}")
   fi
 done
fi

chmods=()
if [[ "${#group_chmods[@]}" -gt 0 ]]; then
 chmods+=("${group_chmods[@]}")
fi
if [[ "${#user_chmods[@]}" -gt 0 ]]; then
 chmods+=("${user_chmods[@]}")
fi

chowns=()
chgrps=()
if [[ "${#chmods[@]}" -gt 0 ]]; then
 for dir in "${chmods[@]}"; do
   if file_not_owned "${dir}"; then
     chowns+=("${dir}")
   fi
   if file_not_grpowned "${dir}"; then
     chgrps+=("${dir}")
   fi
 done
fi

if [[ "${#group_chmods[@]}" -gt 0 ]]; then
 ohai "The following existing directories will be made group writable:"
 printf "%s\n" "${group_chmods[@]}"
fi
if [[ "${#user_chmods[@]}" -gt 0 ]]; then
 ohai "The following existing directories will be made writable by user only:"
 printf "%s\n" "${user_chmods[@]}"
fi
if [[ "${#chowns[@]}" -gt 0 ]]; then
 ohai "The following existing directories will have their owner set to ${tty_underline}${USER}${tty_reset}:"
 printf "%s\n" "${chowns[@]}"
fi
if [[ "${#chgrps[@]}" -gt 0 ]]; then
 ohai "The following existing directories will have their group set to ${tty_underline}${GROUP}${tty_reset}:"
 printf "%s\n" "${chgrps[@]}"
fi
if [[ "${#mkdirs[@]}" -gt 0 ]]; then
 ohai "The following new directories will be created:"
 printf "%s\n" "${mkdirs[@]}"
fi

if should_install_command_line_tools; then
 ohai "The Xcode Command Line Tools will be installed."
fi

if [[ -t 0 && -z "${CI-}" ]]; then
 wait_for_user
fi

if [[ -d "${HOMEBREW_PREFIX}" ]]; then
 if [[ "${#chmods[@]}" -gt 0 ]]; then
   execute_sudo "/bin/chmod" "u+rwx" "${chmods[@]}"
 fi
 if [[ "${#group_chmods[@]}" -gt 0 ]]; then
   execute_sudo "/bin/chmod" "g+rwx" "${group_chmods[@]}"
 fi
 if [[ "${#user_chmods[@]}" -gt 0 ]]; then
   execute_sudo "/bin/chmod" "755" "${user_chmods[@]}"
 fi
 if [[ "${#chowns[@]}" -gt 0 ]]; then
   execute_sudo "$CHOWN" "$USER" "${chowns[@]}"
 fi
 if [[ "${#chgrps[@]}" -gt 0 ]]; then
   execute_sudo "$CHGRP" "$GROUP" "${chgrps[@]}"
 fi
else
 execute_sudo "/bin/mkdir" "-p" "${HOMEBREW_PREFIX}"
 if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
   execute_sudo "$CHOWN" "root:wheel" "${HOMEBREW_PREFIX}"
 else
   execute_sudo "$CHOWN" "$USER:$GROUP" "${HOMEBREW_PREFIX}"
 fi
fi

if [[ "${#mkdirs[@]}" -gt 0 ]]; then
 execute_sudo "/bin/mkdir" "-p" "${mkdirs[@]}"
 execute_sudo "/bin/chmod" "g+rwx" "${mkdirs[@]}"
 execute_sudo "$CHOWN" "$USER" "${mkdirs[@]}"
 execute_sudo "$CHGRP" "$GROUP" "${mkdirs[@]}"
fi

if ! [[ -d "${HOMEBREW_CACHE}" ]]; then
 if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
   execute_sudo "/bin/mkdir" "-p" "${HOMEBREW_CACHE}"
 else
   execute "/bin/mkdir" "-p" "${HOMEBREW_CACHE}"
 fi
fi
if exists_but_not_writable "${HOMEBREW_CACHE}"; then
 execute_sudo "/bin/chmod" "g+rwx" "${HOMEBREW_CACHE}"
fi
if file_not_owned "${HOMEBREW_CACHE}"; then
 execute_sudo "$CHOWN" "$USER" "${HOMEBREW_CACHE}"
fi
if file_not_grpowned "${HOMEBREW_CACHE}"; then
 execute_sudo "$CHGRP" "$GROUP" "${HOMEBREW_CACHE}"
fi
if [[ -d "${HOMEBREW_CACHE}" ]]; then
 execute "$TOUCH" "${HOMEBREW_CACHE}/.cleaned"
fi

if should_install_command_line_tools && version_ge "$macos_version" "10.13"; then
 ohai "Searching online for the Command Line Tools"
 # This temporary file prompts the 'softwareupdate' utility to list the Command Line Tools
 clt_placeholder="/tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress"
 execute_sudo "$TOUCH" "$clt_placeholder"

 clt_label_command="/usr/sbin/softwareupdate -l |
                     grep -B 1 -E 'Command Line Tools' |
                     awk -F'*' '/^ *\\*/ {print \$2}' |
                     sed -e 's/^ *Label: //' -e 's/^ *//' |
                     sort -V |
                     tail -n1"
 clt_label="$(chomp "$(/bin/bash -c "$clt_label_command")")"

 if [[ -n "$clt_label" ]]; then
   ohai "Installing $clt_label"
   execute_sudo "/usr/sbin/softwareupdate" "-i" "$clt_label"
   execute_sudo "/bin/rm" "-f" "$clt_placeholder"
   execute_sudo "/usr/bin/xcode-select" "--switch" "/Library/Developer/CommandLineTools"
 fi
fi

# Headless install may have failed, so fallback to original 'xcode-select' method
if should_install_command_line_tools && test -t 0; then
 ohai "Installing the Command Line Tools (expect a GUI popup):"
 execute_sudo "/usr/bin/xcode-select" "--install"
 echo "Press any key when the installation has completed."
 getc
 execute_sudo "/usr/bin/xcode-select" "--switch" "/Library/Developer/CommandLineTools"
fi

if [[ -z "${HOMEBREW_ON_LINUX-}" ]] && ! output="$(/usr/bin/xcrun clang 2>&1)" && [[ "$output" == *"license"* ]]; then
 abort "$(cat <<EOABORT
You have not agreed to the Xcode license.
Before running the installer again please agree to the license by opening
Xcode.app or running:
   sudo xcodebuild -license
EOABORT
)"
fi

ohai "Downloading and installing Homebrew..."
(
 cd "${HOMEBREW_REPOSITORY}" >/dev/null || return

 # we do it in four steps to avoid merge errors when reinstalling
 execute "git" "init" "-q"

 # "git remote add" will fail if the remote is defined in the global config
 execute "git" "config" "remote.origin.url" "${BREW_REPO}"
 execute "git" "config" "remote.origin.fetch" "+refs/heads/*:refs/remotes/origin/*"

 # ensure we don't munge line endings on checkout
 execute "git" "config" "core.autocrlf" "false"

 execute "git" "fetch" "origin" "--force"
 execute "git" "fetch" "origin" "--tags" "--force"

 execute "git" "reset" "--hard" "origin/master"

 execute "ln" "-sf" "${HOMEBREW_REPOSITORY}/bin/brew" "${HOMEBREW_PREFIX}/bin/brew"

 execute "${HOMEBREW_PREFIX}/bin/brew" "update" "--force"
) || exit 1

if [[ ":${PATH}:" != *":${HOMEBREW_PREFIX}/bin:"* ]]; then
 warn "${HOMEBREW_PREFIX}/bin is not in your PATH."
fi

ohai "Installation successful!"
echo

# Use the shell's audible bell.
if [[ -t 1 ]]; then
 printf "\a"
fi

# Use an extra newline and bold to avoid this being missed.
ohai "Homebrew has enabled anonymous aggregate formulae and cask analytics."
echo "$(cat <<EOS
${tty_bold}Read the analytics documentation (and how to opt-out) here:
 ${tty_underline}https://docs.brew.sh/Analytics${tty_reset}
No analytics data has been sent yet (or will be during this \`install\` run).
EOS
)
"

ohai "Homebrew is run entirely by unpaid volunteers. Please consider donating:"
echo "$(cat <<EOS
 ${tty_underline}https://github.com/Homebrew/brew#donations${tty_reset}
EOS
)
"

(
 cd "${HOMEBREW_REPOSITORY}" >/dev/null || return
 execute "git" "config" "--replace-all" "homebrew.analyticsmessage" "true"
 execute "git" "config" "--replace-all" "homebrew.caskanalyticsmessage" "true"
) || exit 1

ohai "Next steps:"
echo "- Run \`brew help\` to get started"
echo "- Further documentation: "
echo "    ${tty_underline}https://docs.brew.sh${tty_reset}"

if [[ -n "${HOMEBREW_ON_LINUX-}" ]]; then
 case "$SHELL" in
   */bash*)
     if [[ -r "$HOME/.bash_profile" ]]; then
       shell_profile="$HOME/.bash_profile"
     else
       shell_profile="$HOME/.profile"
     fi
     ;;
   */zsh*)
     shell_profile="$HOME/.zprofile"
     ;;
   *)
     shell_profile="$HOME/.profile"
     ;;
 esac

 echo "- Install the Homebrew dependencies if you have sudo access:"

 if [[ $(command -v apt-get) ]]; then
   echo "    sudo apt-get install build-essential"
 elif [[ $(command -v yum) ]]; then
   echo "    sudo yum groupinstall 'Development Tools'"
 elif [[ $(command -v pacman) ]]; then
   echo "    sudo pacman -S base-devel"
 elif [[ $(command -v apk) ]]; then
   echo "    sudo apk add build-base"
 fi

 cat <<EOS
   See ${tty_underline}https://docs.brew.sh/linux${tty_reset} for more information
- Add Homebrew to your ${tty_bold}PATH${tty_reset} in ${tty_underline}${shell_profile}${tty_reset}:
   echo 'eval \$(${HOMEBREW_PREFIX}/bin/brew shellenv)' >> ${shell_profile}
   eval \$(${HOMEBREW_PREFIX}/bin/brew shellenv)
- We recommend that you install GCC:
   brew install gcc

EOS
fi

3.然后打开命令行

cd desktop 
touch install.sh

4.把修改的内容复制粘贴进去install.sh

5.运行

HOMEBREW_CORE_GIT_REMOTE=https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git bash install.sh

6.安装报错

error: RPC failed; result=56, HTTP code = 200 MiB | 1024 bytes/s   

fatal: The remote end hung up unexpectedly

fatal: early EOF

fatal: index-pack failed


可以输入
git config --global http.postBuffer 524288000

科大真香镜像源:
git -C "$(brew --repo)" remote set-url origin https://mirrors.ustc.edu.cn/brew.git

git -C "$(brew --repo homebrew/core)" remote set-url origin https://mirrors.ustc.edu.cn/homebrew-core.git

git -C "$(brew --repo homebrew/cask)" remote set-url origin https://mirrors.ustc.edu.cn/homebrew-cask.git



7.历史版本Xcode可以去https://developer.apple.com/download/more/ 找到并下载安装