MacOS 安装 Telnet

Homebrew是一款自由及开放源代码的软件包管理系统，用以简化macOS系统上的软件安装过程。对于Appstore中没有的软件，推荐使用此方法安装管理第三方软件。

没有安装Homebrew，可以参考MacOS 安装 HomeBrew

1、安装命令：brew install telnet

Error: The following directories are not writable by your user:

/usr/local/share/man/man8

You should change the ownership of these directories to your user.

sudo chown -R $(whoami) /usr/local/share/man/man8

And make sure that your user has write permission.

chmod u+w /usr/local/share/man/man8

2、提示无法安装，需要执行如下命令，即可安装。

sudo chown -R $(whoami) /usr/local/share/man/man8

chmod u+w /usr/local/share/man/man8

3、brew install telnet

==> Downloading https://mirrors.ustc.edu.cn/homebrew-bottles/bottles/telnet-63.m

######################################################################## 100.0%

==> Pouring telnet-63.monterey.bottle.tar.gz

  /usr/local/Cellar/telnet/63: 4 files, 174.8KB

==> Running `brew cleanup telnet`...

Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.

Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).

4、查看telnet版本

telnet -v

telnet: illegal option -- v

usage: telnet [-4] [-6] [-8] [-E] [-K] [-L] [-N] [-S tos] [-X atype] [-c] [-d]

[-e char] [-k realm] [-l user] [-f/-F] [-n tracefile] [-r] [-s src_addr] [-u] [-P policy] [host-name [port]]