macos11自定义Hombrew安装目录_brew install 安装路径

步骤

1. 首先自己有除系统盘的其他盘, 如命名为MacosData

$ diskutil list # 看 /dev/disk4
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *240.1 GB   disk0
   1:       Microsoft Basic Data ⁨windowsData⁩             107.4 GB   disk0s1
   2:                 Apple_APFS ⁨Container disk4⁩         132.7 GB   disk0s2

/dev/disk1 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *128.0 GB   disk1
   1:                        EFI ⁨EFI⁩                     209.7 MB   disk1s1
   2:                 Apple_APFS ⁨Container disk3⁩         127.8 GB   disk1s2

/dev/disk2 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *128.0 GB   disk2
   1:                        EFI ⁨⁩                        314.6 MB   disk2s1
   2:       Microsoft Basic Data ⁨⁩                        127.7 GB   disk2s2

/dev/disk3 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +127.8 GB   disk3
                                 Physical Store disk1s2
   1:                APFS Volume ⁨Mac - 数据⁩              74.4 GB    disk3s1
   2:                APFS Volume ⁨Preboot⁩                 487.7 MB   disk3s2
   3:                APFS Volume ⁨Recovery⁩                621.4 MB   disk3s3
   4:                APFS Volume ⁨VM⁩                      1.1 GB     disk3s4
   5:                APFS Volume ⁨Mac⁩                     15.3 GB    disk3s5
   6:              APFS Snapshot ⁨com.apple.os.update-...⁩ 15.3 GB    disk3s5s1

/dev/disk4 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +132.7 GB   disk4
                                 Physical Store disk0s2
   1:                APFS Volume ⁨MacOsData⁩               85.3 GB    disk4s1
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3. 获得homebrew install.sh脚本
4. 修改install.sh脚本, 命名install-changed.sh

$ cat install-changed.sh

#!/bin/bash

# We don't need return codes for "$(command)", only stdout is needed.
# Allow `[[ -n "$(command)" ]]`, `func "$(command)"`, pipes, etc.
# shellcheck disable=SC2312

set -u

#####  这里修改，注意这里不是写入文件的内容，是我另外说明的内容，请不要写到脚本里，如果要改，就改HOMEBREW_PREFIX @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
HOME=/Users/mutou/SubOs/usr #这里的/Users/mutou/SubOs是/dev/disk4的软连接， 应该是/Volumes/MacOsData, 你应该改为自己的
HOMEBREW_CACHE=/Users/mutou/SubOs/usr
### 后面修改HOMEBREW_PREFIX，修改这个最重要，我就让他指向和上面的HOME一样了
### 还有我把github.com改为521github.com了
### 下面几行添加到.zshrc
export HOMEBREW_API_DOMAIN="https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles/api"
export HOMEBREW_BREW_GIT_REMOTE="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git"
export HOMEBREW_CACHE=/Users/mutou/SubOs/usr/Libaray/Caches/Homebrew
### 然后
# brew update

# test `brew install pkgconf`
##### @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

abort() {
  printf "%s\n" "$@" >&2
  exit 1
}

# Fail fast with a concise message when not using bash
# Single brackets are needed here for POSIX compatibility
# shellcheck disable=SC2292
if [ -z "${BASH_VERSION:-}" ]
then
  abort "Bash is required to interpret this script."
fi

# Check if script is run with force-interactive mode in CI
if [[ -n "${CI-}" && -n "${INTERACTIVE-}" ]]
then
  abort "Cannot run force-interactive mode in CI."
fi

# Check if both `INTERACTIVE` and `NONINTERACTIVE` are set
# Always use single-quoted strings with `exp` expressions
# shellcheck disable=SC2016
if [[ -n "${INTERACTIVE-}" && -n "${NONINTERACTIVE-}" ]]
then
  abort 'Both `$INTERACTIVE` and `$NONINTERACTIVE` are set. Please unset at least one variable and try again.'
fi

# Check if script is run in POSIX mode
if [[ -n "${POSIXLY_CORRECT+1}" ]]
then
  abort 'Bash must not run in POSIX mode. Please unset POSIXLY_CORRECT and try again.'
fi

usage() {
  cat <<EOS
Homebrew Installer
Usage: [NONINTERACTIVE=1] [CI=1] install.sh [options]
    -h, --help       Display this message.
    NONINTERACTIVE   Install without prompting for user input
    CI               Install in CI mode (e.g. do not prompt for user input)
EOS
  exit "${1:-0}"
}

while [[ $# -gt 0 ]]
do
  case "$1" in
    -h | --help) usage ;;
    *)
      warn "Unrecognized option: '$1'"
      usage 1
      ;;
  esac
done

# 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)"

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")" >&2
}

# Check if script is run non-interactively (e.g. CI)
# If it is run non-interactively we should not prompt for passwords.
# Always use single-quoted strings with `exp` expressions
# shellcheck disable=SC2016
if [[ -z "${NONINTERACTIVE-}" ]]
then
  if [[ -n "${CI-}" ]]
  then
    warn 'Running in non-interactive mode because `$CI` is set.'
    NONINTERACTIVE=1
  elif [[ ! -t 0 ]]
  then
    if [[ -z "${INTERACTIVE-}" ]]
    then
      warn 'Running in non-interactive mode because `stdin` is not a TTY.'
      NONINTERACTIVE=1
    else
      warn 'Running in interactive mode despite `stdin` not being a TTY because `$INTERACTIVE` is set.'
    fi
  fi
else
  ohai 'Running in non-interactive mode because `$NONINTERACTIVE` is set.'
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

# First check OS.
OS="$(uname)"
if [[ "${OS}" == "Linux" ]]
then
  HOMEBREW_ON_LINUX=1
elif [[ "${OS}" == "Darwin" ]]
then
  HOMEBREW_ON_MACOS=1
else
  abort "Homebrew is only supported on macOS and Linux."
fi

# Required installation paths. To install elsewhere (which is unsupported)
# you can untar https://521github.com/Homebrew/brew/tarball/master
# anywhere you like.
if [[ -n "${HOMEBREW_ON_MACOS-}" ]]
then
  UNAME_MACHINE="$(/usr/bin/uname -m)"

  if [[ "${UNAME_MACHINE}" == "arm64" ]]
  then
    # On ARM macOS, this script installs to /opt/homebrew only
    HOMEBREW_PREFIX="/opt/homebrew"
    HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}"
  else
    # On Intel macOS, this script installs to /usr/local only
    HOMEBREW_PREFIX="/Users/mutou/SubOs/usr"
    HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}/Homebrew"
  fi
  HOMEBREW_CACHE="${HOME}/Library/Caches/Homebrew"

  STAT_PRINTF=("stat" "-f")
  PERMISSION_FORMAT="%A"
  CHOWN=("/usr/sbin/chown")
  CHGRP=("/usr/bin/chgrp")
  GROUP="admin"
  TOUCH=("/usr/bin/touch")
  INSTALL=("/usr/bin/install" -d -o "root" -g "wheel" -m "0755")
else
  UNAME_MACHINE="$(uname -m)"

  # On Linux, this script installs to /home/linuxbrew/.linuxbrew only
  HOMEBREW_PREFIX="/home/linuxbrew/.linuxbrew"
  HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}/Homebrew"
  HOMEBREW_CACHE="${HOME}/.cache/Homebrew"

  STAT_PRINTF=("stat" "--printf")
  PERMISSION_FORMAT="%a"
  CHOWN=("/bin/chown")
  CHGRP=("/bin/chgrp")
  GROUP="$(id -gn)"
  TOUCH=("/bin/touch")
  INSTALL=("/usr/bin/install" -d -o "${USER}" -g "${GROUP}" -m "0755")
fi
CHMOD=("/bin/chmod")
MKDIR=("/bin/mkdir" "-p")
HOMEBREW_BREW_DEFAULT_GIT_REMOTE="https://521github.com/Homebrew/brew"
HOMEBREW_CORE_DEFAULT_GIT_REMOTE="https://521github.com/Homebrew/homebrew-core"

# Use remote URLs of Homebrew repositories from environment if set.
HOMEBREW_BREW_GIT_REMOTE="${HOMEBREW_BREW_GIT_REMOTE:-"${HOMEBREW_BREW_DEFAULT_GIT_REMOTE}"}"
HOMEBREW_CORE_GIT_REMOTE="${HOMEBREW_CORE_GIT_REMOTE:-"${HOMEBREW_CORE_DEFAULT_GIT_REMOTE}"}"
# The URLs with and without the '.git' suffix are the same Git remote. Do not prompt.
if [[ "${HOMEBREW_BREW_GIT_REMOTE}" == "${HOMEBREW_BREW_DEFAULT_GIT_REMOTE}.git" ]]
then
  HOMEBREW_BREW_GIT_REMOTE="${HOMEBREW_BREW_DEFAULT_GIT_REMOTE}"
fi
if [[ "${HOMEBREW_CORE_GIT_REMOTE}" == "${HOMEBREW_CORE_DEFAULT_GIT_REMOTE}.git" ]]
then
  HOMEBREW_CORE_GIT_REMOTE="${HOMEBREW_CORE_DEFAULT_GIT_REMOTE}"
fi
export HOMEBREW_{BREW,CORE}_GIT_REMOTE

# TODO: bump version when new macOS is released or announced
MACOS_NEWEST_UNSUPPORTED="15.0"
# TODO: bump version when new macOS is released
MACOS_OLDEST_SUPPORTED="12.0"

# For Homebrew on Linux
REQUIRED_RUBY_VERSION=2.6    # https://521github.com/Homebrew/brew/pull/6556
REQUIRED_GLIBC_VERSION=2.13  # https://docs.brew.sh/Homebrew-on-Linux#requirements
REQUIRED_CURL_VERSION=7.41.0 # HOMEBREW_MINIMUM_CURL_VERSION in brew.sh in Homebrew/brew
REQUIRED_GIT_VERSION=2.7.0   # HOMEBREW_MINIMUM_GIT_VERSION in brew.sh in Homebrew/brew

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

unset HAVE_SUDO_ACCESS # unset this from the environment

have_sudo_access() {
  if [[ ! -x "/usr/bin/sudo" ]]
  then
    return 1
  fi

  local -a SUDO=("/usr/bin/sudo")
  if [[ -n "${SUDO_ASKPASS-}" ]]
  then
    SUDO+=("-A")
  elif [[ -n "${NONINTERACTIVE-}" ]]
  then
    SUDO+=("-n")
  fi

  if [[ -z "${HAVE_SUDO_ACCESS-}" ]]
  then
    if [[ -n "${NONINTERACTIVE-}" ]]
    then
      "${SUDO[@]}" -l mkdir &>/dev/null
    else
      "${SUDO[@]}" -v && "${SUDO[@]}" -l mkdir &>/dev/null
    fi
    HAVE_SUDO_ACCESS="$?"
  fi

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

  return "${HAVE_SUDO_ACCESS}"
}

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

execute_sudo() {
  local -a args=("$@")
  if [[ "${EUID:-${UID}}" != "0" ]] && have_sudo_access
  then
    if [[ -n "${SUDO_ASKPASS-}" ]]
    then
      args=("-A" "${args[@]}")
    fi
    ohai "/usr/bin/sudo" "${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}"
}

ring_bell() {
  # Use the shell's audible bell.
  if [[ -t 1 ]]
  then
    printf "\a"
  fi
}

wait_for_user() {
  local c
  echo
  echo "Press ${tty_bold}RETURN${tty_reset}/${tty_bold}ENTER${tty_reset} 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%%.*}"
  )"
}

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#*.}" ]]
}

check_run_command_as_root() {
  [[ "${EUID:-${UID}}" == "0" ]] || return

  # Allow Azure Pipelines/GitHub Actions/Docker/Concourse/Kubernetes to do everything as root (as it's normal there)
  [[ -f /.dockerenv ]] && return
  [[ -f /run/.containerenv ]] && return
  [[ -f /proc/1/cgroup ]] && grep -E "azpl_job|actions_job|docker|garden|kubepods" -q /proc/1/cgroup && return

  abort "Don't run this as root!"
}

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() {
  "${STAT_PRINTF[@]}" "${PERMISSION_FORMAT}" "$1"
}

user_only_chmod() {
  [[ -d "$1" ]] && [[ "$(get_permission "$1")" != 75[0145] ]]
}

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

get_owner() {
  "${STAT_PRINTF[@]}" "%u" "$1"
}

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

get_group() {
  "${STAT_PRINTF[@]}" "%g" "$1"
}

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

# Please sync with 'test_ruby()' in 'Library/Homebrew/utils/ruby.sh' from the 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
}

test_curl() {
  if [[ ! -x "$1" ]]
  then
    return 1
  fi

  local curl_version_output curl_name_and_version
  curl_version_output="$("$1" --version 2>/dev/null)"
  curl_name_and_version="${curl_version_output%% (*}"
  version_ge "$(major_minor "${curl_name_and_version##* }")" "$(major_minor "${REQUIRED_CURL_VERSION}")"
}

test_git() {
  if [[ ! -x "$1" ]]
  then
    return 1
  fi

  local git_version_output
  git_version_output="$("$1" --version 2>/dev/null)"
  if [[ "${git_version_output}" =~ "git version "([^ ]*).* ]]
  then
    version_ge "$(major_minor "${BASH_REMATCH[1]}")" "$(major_minor "${REQUIRED_GIT_VERSION}")"
  else
    abort "Unexpected Git version: '${git_version_output}'!"
  fi
}

# Search for the given executable in PATH (avoids a dependency on the `which` command)
which() {
  # Alias to Bash built-in command `type -P`
  type -P "$@"
}

# Search PATH for the specified program that satisfies Homebrew requirements
# function which is set above
# shellcheck disable=SC2230
find_tool() {
  if [[ $# -ne 1 ]]
  then
    return 1
  fi

  local executable
  while read -r executable
  do
    if [[ "${executable}" != /* ]]
    then
      warn "Ignoring ${executable} (relative paths don't work)"
    elif "test_$1" "${executable}"
    then
      echo "${executable}"
      break
    fi
  done < <(which -a "$1")
}

no_usable_ruby() {
  [[ -z "$(find_tool ruby)" ]]
}

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 <<EOABORT
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}
Please install Ruby ${REQUIRED_RUBY_VERSION} and add its location to your PATH.
EOABORT
  )"
fi

# Invalidate sudo timestamp before exiting (if it wasn't active before).
if [[ -x /usr/bin/sudo ]] && ! /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

# shellcheck disable=SC2016
ohai 'Checking for `sudo` access (which may request your password)...'

if [[ -n "${HOMEBREW_ON_MACOS-}" ]]
then
  [[ "${EUID:-${UID}}" == "0" ]] || have_sudo_access
elif ! [[ -w "${HOMEBREW_PREFIX}" ]] &&
     ! [[ -w "/home/linuxbrew" ]] &&
     ! [[ -w "/home" ]] &&
     ! have_sudo_access
then
  abort "$(
    cat <<EOABORT
Insufficient permissions to install Homebrew to \"${HOMEBREW_PREFIX}\" (the default prefix).

Alternative (unsupported) installation methods are available at:
https://docs.brew.sh/Installation#alternative-installs

Please note this will require most formula to build from source, a buggy, slow and energy-inefficient experience.
We will close any issues without response for these unsupported configurations.
EOABORT
  )"
fi
HOMEBREW_CORE="${HOMEBREW_REPOSITORY}/Library/Taps/homebrew/homebrew-core"

check_run_command_as_root

if [[ -d "${HOMEBREW_PREFIX}" && ! -x "${HOMEBREW_PREFIX}" ]]
then
  abort "$(
    cat <<EOABORT
The Homebrew prefix ${tty_underline}${HOMEBREW_PREFIX}${tty_reset} exists but is not searchable.
If this is not intentional, please restore the default permissions and
try running the installer again:
    sudo chmod 775 ${x}
EOABORT
  )"
fi

if [[ -n "${HOMEBREW_ON_MACOS-}" ]]
then
  # On macOS, support 64-bit Intel and ARM
  if [[ "${UNAME_MACHINE}" != "arm64" ]] && [[ "${UNAME_MACHINE}" != "x86_64" ]]
  then
    abort "Homebrew is only supported on Intel and ARM processors!"
  fi
else
  # On Linux, support only 64-bit Intel
  if [[ "${UNAME_MACHINE}" == "aarch64" ]]
  then
    abort "$(
      cat <<EOABORT
Homebrew on Linux is not supported on ARM processors.
  ${tty_underline}https://docs.brew.sh/Homebrew-on-Linux#arm-unsupported${tty_reset}
EOABORT
    )"
  elif [[ "${UNAME_MACHINE}" != "x86_64" ]]
  then
    abort "Homebrew on Linux is only supported on Intel processors!"
  fi
fi

if [[ -n "${HOMEBREW_ON_MACOS-}" ]]
then
  macos_version="$(major_minor "$(/usr/bin/sw_vers -productVersion)")"
  if version_lt "${macos_version}" "10.7"
  then
    abort "$(
      cat <<EOABORT
Your Mac OS X version is too old. See:
  ${tty_underline}https://521github.com/mistydemeo/tigerbrew${tty_reset}
EOABORT
    )"
  elif version_lt "${macos_version}" "10.11"
  then
    abort "Your OS X version is too old."
  elif version_ge "${macos_version}" "${MACOS_NEWEST_UNSUPPORTED}" ||
       version_lt "${macos_version}" "${MACOS_OLDEST_SUPPORTED}"
  then
    who="We"
    what=""
    if version_ge "${macos_version}" "${MACOS_NEWEST_UNSUPPORTED}"
    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,
Twitter or any other official channels. You are responsible for resolving any
issues you experience while you are running this ${what}.
EOS
    )
" | tr -d "\\"
  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://521github.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 Frameworks
)
mkdirs=()
for dir in "${directories[@]}"
do
  if ! [[ -d "${HOMEBREW_PREFIX}/${dir}" ]]
  then
    mkdirs+=("${HOMEBREW_PREFIX}/${dir}")
  fi
done

user_chmods=()
mkdirs_user_only=()
if [[ "${#zsh_dirs[@]}" -gt 0 ]]
then
  for dir in "${zsh_dirs[@]}"
  do
    if [[ ! -d "${dir}" ]]
    then
      mkdirs_user_only+=("${dir}")
    elif 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

non_default_repos=""
additional_shellenv_commands=()
if [[ "${HOMEBREW_BREW_DEFAULT_GIT_REMOTE}" != "${HOMEBREW_BREW_GIT_REMOTE}" ]]
then
  ohai "HOMEBREW_BREW_GIT_REMOTE is set to a non-default URL:"
  echo "${tty_underline}${HOMEBREW_BREW_GIT_REMOTE}${tty_reset} will be used as the Homebrew/brew Git remote."
  non_default_repos="Homebrew/brew"
  additional_shellenv_commands+=("export HOMEBREW_BREW_GIT_REMOTE=\"${HOMEBREW_BREW_GIT_REMOTE}\"")
fi

if [[ "${HOMEBREW_CORE_DEFAULT_GIT_REMOTE}" != "${HOMEBREW_CORE_GIT_REMOTE}" ]]
then
  ohai "HOMEBREW_CORE_GIT_REMOTE is set to a non-default URL:"
  echo "${tty_underline}${HOMEBREW_CORE_GIT_REMOTE}${tty_reset} will be used as the Homebrew/homebrew-core Git remote."
  non_default_repos="${non_default_repos:-}${non_default_repos:+ and }Homebrew/homebrew-core"
  additional_shellenv_commands+=("export HOMEBREW_CORE_GIT_REMOTE=\"${HOMEBREW_CORE_GIT_REMOTE}\"")
fi

if [[ -n "${HOMEBREW_NO_INSTALL_FROM_API-}" ]]
then
  ohai "HOMEBREW_NO_INSTALL_FROM_API is set."
  echo "Homebrew/homebrew-core will be tapped during this ${tty_bold}install${tty_reset} run."
fi

if [[ -z "${NONINTERACTIVE-}" ]]
then
  ring_bell
  wait_for_user
fi

if [[ -d "${HOMEBREW_PREFIX}" ]]
then
  if [[ "${#chmods[@]}" -gt 0 ]]
  then
    execute_sudo "${CHMOD[@]}" "u+rwx" "${chmods[@]}"
  fi
  if [[ "${#group_chmods[@]}" -gt 0 ]]
  then
    execute_sudo "${CHMOD[@]}" "g+rwx" "${group_chmods[@]}"
  fi
  if [[ "${#user_chmods[@]}" -gt 0 ]]
  then
    execute_sudo "${CHMOD[@]}" "go-w" "${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 "${INSTALL[@]}" "${HOMEBREW_PREFIX}"
fi

if [[ "${#mkdirs[@]}" -gt 0 ]]
then
  execute_sudo "${MKDIR[@]}" "${mkdirs[@]}"
  execute_sudo "${CHMOD[@]}" "ug=rwx" "${mkdirs[@]}"
  if [[ "${#mkdirs_user_only[@]}" -gt 0 ]]
  then
    execute_sudo "${CHMOD[@]}" "go-w" "${mkdirs_user_only[@]}"
  fi
  execute_sudo "${CHOWN[@]}" "${USER}" "${mkdirs[@]}"
  execute_sudo "${CHGRP[@]}" "${GROUP}" "${mkdirs[@]}"
fi

if ! [[ -d "${HOMEBREW_REPOSITORY}" ]]
then
  execute_sudo "${MKDIR[@]}" "${HOMEBREW_REPOSITORY}"
fi
execute_sudo "${CHOWN[@]}" "-R" "${USER}:${GROUP}" "${HOMEBREW_REPOSITORY}"

if ! [[ -d "${HOMEBREW_CACHE}" ]]
then
  if [[ -n "${HOMEBREW_ON_MACOS-}" ]]
  then
    execute_sudo "${MKDIR[@]}" "${HOMEBREW_CACHE}"
  else
    execute "${MKDIR[@]}" "${HOMEBREW_CACHE}"
  fi
fi
if exists_but_not_writable "${HOMEBREW_CACHE}"
then
  execute_sudo "${CHMOD[@]}" "g+rwx" "${HOMEBREW_CACHE}"
fi
if file_not_owned "${HOMEBREW_CACHE}"
then
  execute_sudo "${CHOWN[@]}" "-R" "${USER}" "${HOMEBREW_CACHE}"
fi
if file_not_grpowned "${HOMEBREW_CACHE}"
then
  execute_sudo "${CHGRP[@]}" "-R" "${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 "/usr/bin/xcode-select" "--switch" "/Library/Developer/CommandLineTools"
  fi
  execute_sudo "/bin/rm" "-f" "${clt_placeholder}"
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 "/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 [[ -n "${HOMEBREW_ON_MACOS-}" ]] && ! output="$(/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

USABLE_GIT=/usr/bin/git
if [[ -n "${HOMEBREW_ON_LINUX-}" ]]
then
  USABLE_GIT="$(find_tool git)"
  if [[ -z "$(command -v git)" ]]
  then
    abort "$(
      cat <<EOABORT
  You must install Git before installing Homebrew. See:
    ${tty_underline}https://docs.brew.sh/Installation${tty_reset}
EOABORT
    )"
  fi
  if [[ -z "${USABLE_GIT}" ]]
  then
    abort "$(
      cat <<EOABORT
  The version of Git that was found does not satisfy requirements for Homebrew.
  Please install Git ${REQUIRED_GIT_VERSION} or newer and add it to your PATH.
EOABORT
    )"
  fi
  if [[ "${USABLE_GIT}" != /usr/bin/git ]]
  then
    export HOMEBREW_GIT_PATH="${USABLE_GIT}"
    ohai "Found Git: ${HOMEBREW_GIT_PATH}"
  fi
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
  )"
elif [[ -n "${HOMEBREW_ON_LINUX-}" ]]
then
  USABLE_CURL="$(find_tool curl)"
  if [[ -z "${USABLE_CURL}" ]]
  then
    abort "$(
      cat <<EOABORT
The version of cURL that was found does not satisfy requirements for Homebrew.
Please install cURL ${REQUIRED_CURL_VERSION} or newer and add it to your PATH.
EOABORT
    )"
  elif [[ "${USABLE_CURL}" != /usr/bin/curl ]]
  then
    export HOMEBREW_CURL_PATH="${USABLE_CURL}"
    ohai "Found cURL: ${HOMEBREW_CURL_PATH}"
  fi
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 "${USABLE_GIT}" "-c" "init.defaultBranch=master" "init" "--quiet"

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

  # ensure we don't munge line endings on checkout
  execute "${USABLE_GIT}" "config" "--bool" "core.autocrlf" "false"

  # make sure symlinks are saved as-is
  execute "${USABLE_GIT}" "config" "--bool" "core.symlinks" "true"

  execute "${USABLE_GIT}" "fetch" "--force" "origin"
  execute "${USABLE_GIT}" "fetch" "--force" "--tags" "origin"

  execute "${USABLE_GIT}" "reset" "--hard" "origin/master"

  if [[ "${HOMEBREW_REPOSITORY}" != "${HOMEBREW_PREFIX}" ]]
  then
    if [[ "${HOMEBREW_REPOSITORY}" == "${HOMEBREW_PREFIX}/Homebrew" ]]
    then
      execute "ln" "-sf" "../Homebrew/bin/brew" "${HOMEBREW_PREFIX}/bin/brew"
    else
      abort "The Homebrew/brew repository should be placed in the Homebrew prefix directory."
    fi
  fi

  if [[ -n "${HOMEBREW_NO_INSTALL_FROM_API-}" && ! -d "${HOMEBREW_CORE}" ]]
  then
    # Always use single-quoted strings with `exp` expressions
    # shellcheck disable=SC2016
    ohai 'Tapping homebrew/core because `$HOMEBREW_NO_INSTALL_FROM_API` is set.'
    (
      execute "${MKDIR[@]}" "${HOMEBREW_CORE}"
      cd "${HOMEBREW_CORE}" >/dev/null || return

      execute "${USABLE_GIT}" "-c" "init.defaultBranch=master" "init" "--quiet"
      execute "${USABLE_GIT}" "config" "remote.origin.url" "${HOMEBREW_CORE_GIT_REMOTE}"
      execute "${USABLE_GIT}" "config" "remote.origin.fetch" "+refs/heads/*:refs/remotes/origin/*"
      execute "${USABLE_GIT}" "config" "--bool" "core.autocrlf" "false"
      execute "${USABLE_GIT}" "config" "--bool" "core.symlinks" "true"
      execute "${USABLE_GIT}" "fetch" "--force" "origin" "refs/heads/master:refs/remotes/origin/master"
      execute "${USABLE_GIT}" "remote" "set-head" "origin" "--auto" >/dev/null
      execute "${USABLE_GIT}" "reset" "--hard" "origin/master"

      cd "${HOMEBREW_REPOSITORY}" >/dev/null || return
    ) || exit 1
  fi

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

if [[ ":${PATH}:" != *":${HOMEBREW_PREFIX}/bin:"* ]]
then
  warn "${HOMEBREW_PREFIX}/bin is not in your PATH.
  Instructions on how to configure your shell for Homebrew
  can be found in the 'Next steps' section below."
fi

ohai "Installation successful!"
echo

ring_bell

# 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 (nor will any be during this ${tty_bold}install${tty_reset} run).
EOS
)
"

ohai "Homebrew is run entirely by unpaid volunteers. Please consider donating:"
echo "$(
  cat <<EOS
  ${tty_underline}https://521github.com/Homebrew/brew#donations${tty_reset}
EOS
)
"

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

ohai "Next steps:"
case "${SHELL}" in
  */bash*)
    if [[ -n "${HOMEBREW_ON_LINUX-}" ]]
    then
      shell_rcfile="${HOME}/.bashrc"
    else
      shell_rcfile="${HOME}/.bash_profile"
    fi
    ;;
  */zsh*)
    if [[ -n "${HOMEBREW_ON_LINUX-}" ]]
    then
      shell_rcfile="${ZDOTDIR:-"${HOME}"}/.zshrc"
    else
      shell_rcfile="${ZDOTDIR:-"${HOME}"}/.zprofile"
    fi
    ;;
  */fish*)
    shell_rcfile="${HOME}/.config/fish/config.fish"
    ;;
  *)
    shell_rcfile="${ENV:-"${HOME}/.profile"}"
    ;;
esac

if grep -qs "eval \"\$(${HOMEBREW_PREFIX}/bin/brew shellenv)\"" "${shell_rcfile}"
then
  if ! [[ -x "$(command -v brew)" ]]
  then
    cat <<EOS
- Run this command in your terminal to add Homebrew to your ${tty_bold}PATH${tty_reset}:
    eval "\$(${HOMEBREW_PREFIX}/bin/brew shellenv)"
EOS
  fi
else
  cat <<EOS
- Run these two commands in your terminal to add Homebrew to your ${tty_bold}PATH${tty_reset}:
    (echo; echo 'eval "\$(${HOMEBREW_PREFIX}/bin/brew shellenv)"') >> ${shell_rcfile}
    eval "\$(${HOMEBREW_PREFIX}/bin/brew shellenv)"
EOS
fi

if [[ -n "${non_default_repos}" ]]
then
  plural=""
  if [[ "${#additional_shellenv_commands[@]}" -gt 1 ]]
  then
    plural="s"
  fi
  printf -- "- Run these commands in your terminal to add the non-default Git remote%s for %s:\n" "${plural}" "${non_default_repos}"
  printf "    echo '# Set PATH, MANPATH, etc., for Homebrew.' >> %s\n" "${shell_rcfile}"
  printf "    echo '%s' >> ${shell_rcfile}\n" "${additional_shellenv_commands[@]}"
  printf "    %s\n" "${additional_shellenv_commands[@]}"
fi

if [[ -n "${HOMEBREW_ON_LINUX-}" ]]
then
  echo "- Install Homebrew's dependencies if you have sudo access:"

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

  cat <<EOS
  For more information, see:
    ${tty_underline}https://docs.brew.sh/Homebrew-on-Linux${tty_reset}
- We recommend that you install GCC:
    brew install gcc
EOS
fi

cat <<EOS
- Run ${tty_bold}brew help${tty_reset} to get started
- Further documentation:
    ${tty_underline}https://docs.brew.sh${tty_reset}

EOS
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尝试bash install-changed.sh安装和测试手动删除这个你指定的Homebrew目录

然后追加PATH变量，让brew安装的包能启动

后期装包目录例子

$ cd /Users/mutou/SubOs/usr/Homebrew/Library/Taps/homebrew/homebrew-core/Formula
# 修改一些ruby文件，把url 段的github.com 改成521github.com， 然后
brew install -v x/xz.rb
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