使用brew 安装 node 以后，node -v不显示版本号，which node 没有显示，/usr/local/bin 下也没有node

之前用这个命令把 pkg 的安装包删了
sudo rm -rf /usr/local/{bin/{node,npm},lib/node_modules/npm,lib/node,share/man//node.}

然后用brew 安装

==> Downloading https://homebrew.bintray.com/bottles/node-10.0.0.high_sierra.bottle.tar.gz
Already downloaded: /Users/sheng/Library/Caches/Homebrew/node-10.0.0.high_sierra.bottle.tar.gz
==> Pouring node-10.0.0.high_sierra.bottle.tar.gz
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink include/node/android-ifaddrs.h
Target /usr/local/include/node/android-ifaddrs.h
already exists. You may want to remove it:
  rm '/usr/local/include/node/android-ifaddrs.h'

To force the link and overwrite all conflicting files:
  brew link --overwrite node

To list all files that would be deleted:
  brew link --overwrite --dry-run node

Possible conflicting files are:
/usr/local/include/node/android-ifaddrs.h
/usr/local/include/node/common.gypi
/usr/local/include/node/config.gypi
/usr/local/include/node/libplatform/libplatform-export.h
/usr/local/include/node/libplatform/libplatform.h
/usr/local/include/node/libplatform/v8-tracing.h
/usr/local/include/node/node.h
/usr/local/include/node/node_api.h
/usr/local/include/node/node_api_types.h
/usr/local/include/node/node_buffer.h
/usr/local/include/node/node_object_wrap.h
/usr/local/include/node/node_version.h
/usr/local/include/node/openssl/aes.h
/usr/local/include/node/openssl/asn1.h
/usr/local/include/node/openssl/asn1_mac.h
/usr/local/include/node/openssl/asn1t.h
/usr/local/include/node/openssl/bio.h
/usr/local/include/node/openssl/blowfish.h
/usr/local/include/node/openssl/bn.h
/usr/local/include/node/openssl/buffer.h
/usr/local/include/node/openssl/camellia.h
/usr/local/include/node/openssl/cast.h
/usr/local/include/node/openssl/cmac.h
/usr/local/include/node/openssl/cms.h
/usr/local/include/node/openssl/comp.h
/usr/local/include/node/openssl/conf.h
/usr/local/include/node/openssl/conf_api.h
/usr/local/include/node/openssl/crypto.h
/usr/local/include/node/openssl/des.h
/usr/local/include/node/openssl/dh.h
/usr/local/include/node/openssl/dsa.h
/usr/local/include/node/openssl/dtls1.h
/usr/local/include/node/openssl/e_os2.h
/usr/local/include/node/openssl/ebcdic.h
/usr/local/include/node/openssl/ec.h
/usr/local/include/node/openssl/ecdh.h
/usr/local/include/node/openssl/ecdsa.h
/usr/local/include/node/openssl/engine.h
/usr/local/include/node/openssl/err.h
/usr/local/include/node/openssl/evp.h
/usr/local/include/node/openssl/hmac.h
/usr/local/include/node/openssl/idea.h
/usr/local/include/node/openssl/lhash.h
/usr/local/include/node/openssl/md4.h
/usr/local/include/node/openssl/md5.h
/usr/local/include/node/openssl/mdc2.h
/usr/local/include/node/openssl/modes.h
/usr/local/include/node/openssl/obj_mac.h
/usr/local/include/node/openssl/objects.h
/usr/local/include/node/openssl/ocsp.h
/usr/local/include/node/openssl/opensslconf.h
/usr/local/include/node/openssl/opensslv.h
/usr/local/include/node/openssl/ossl_typ.h
/usr/local/include/node/openssl/pem.h
/usr/local/include/node/openssl/pem2.h
/usr/local/include/node/openssl/pkcs12.h
/usr/local/include/node/openssl/pkcs7.h
/usr/local/include/node/openssl/rand.h
/usr/local/include/node/openssl/rc2.h
/usr/local/include/node/openssl/rc4.h
/usr/local/include/node/openssl/ripemd.h
/usr/local/include/node/openssl/rsa.h
/usr/local/include/node/openssl/safestack.h
/usr/local/include/node/openssl/seed.h
/usr/local/include/node/openssl/sha.h
/usr/local/include/node/openssl/srp.h
/usr/local/include/node/openssl/srtp.h
/usr/local/include/node/openssl/ssl.h
/usr/local/include/node/openssl/ssl2.h
/usr/local/include/node/openssl/ssl3.h
/usr/local/include/node/openssl/stack.h
/usr/local/include/node/openssl/symhacks.h
/usr/local/include/node/openssl/tls1.h
/usr/local/include/node/openssl/ts.h
/usr/local/include/node/openssl/txt_db.h
/usr/local/include/node/openssl/ui.h
/usr/local/include/node/openssl/whrlpool.h
/usr/local/include/node/openssl/x509.h
/usr/local/include/node/openssl/x509_vfy.h
/usr/local/include/node/openssl/x509v3.h
/usr/local/include/node/pthread-barrier.h
/usr/local/include/node/stdint-msvc2008.h
/usr/local/include/node/tree.h
/usr/local/include/node/uv-aix.h
/usr/local/include/node/uv-bsd.h
/usr/local/include/node/uv-darwin.h
/usr/local/include/node/uv-errno.h
/usr/local/include/node/uv-linux.h
/usr/local/include/node/uv-os390.h
/usr/local/include/node/uv-posix.h
/usr/local/include/node/uv-sunos.h
/usr/local/include/node/uv-threadpool.h
/usr/local/include/node/uv-unix.h
/usr/local/include/node/uv-version.h
/usr/local/include/node/uv-win.h
/usr/local/include/node/uv.h
/usr/local/include/node/v8-inspector-protocol.h
/usr/local/include/node/v8-inspector.h
/usr/local/include/node/v8-platform.h
/usr/local/include/node/v8-profiler.h
/usr/local/include/node/v8-testing.h
/usr/local/include/node/v8-util.h
/usr/local/include/node/v8-value-serializer-version.h
/usr/local/include/node/v8-version-string.h
/usr/local/include/node/v8-version.h
/usr/local/include/node/v8.h
/usr/local/include/node/v8config.h
/usr/local/include/node/zconf.h
/usr/local/include/node/zlib.h
/usr/local/share/doc/node/gdbinit
/usr/local/share/doc/node/lldb_commands.py
/usr/local/share/doc/node/lldbinit
/usr/local/share/systemtap/tapset/node.stp
/usr/local/lib/dtrace/node.d
==> Caveats
Bash completion has been installed to:
  /usr/local/etc/bash_completion.d
==> Summary