homebrew - 如何让 brew 提供安装后说明？

Question

我想看看 brew 给出的启动 postgres 的说明，但是它已经安装了。安装后它显示了这些说明。

在 Mac 上使用 brew 再次查看安装后说明的命令是什么？

Answer 1

命令:

brew info postgresql

给出:

postgresql: stable 9.4.2 (bottled)
https://www.postgresql.org/
Conflicts with: postgres-xc
/usr/local/Cellar/postgresql/9.4.2 (3004 files, 40M) *
  Poured from bottle
From: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/postgresql.rb
==> Dependencies
Required: openssl ✔, readline ✔
==> Options
--32-bit
    Build 32-bit only
--with-dtrace
    Build with DTrace support
--with-python
    Build with python support
--without-perl
    Build without Perl support
--without-tcl
    Build without Tcl support
==> Caveats
If builds of PostgreSQL 9 are failing and you have version 8.x installed,
you may need to remove the previous version first. See:
  https://github.com/Homebrew/homebrew/issues/2510

To migrate existing data from a previous major version (pre-9.4) of PostgreSQL, see:
  https://www.postgresql.org/docs/9.4/static/upgrading.html

To have launchd start postgresql at login:
    ln -sfv /usr/local/opt/postgresql/*.plist ~/Library/LaunchAgents
Then to load postgresql now:
    launchctl load ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
Or, if you don't want/need launchctl, you can just run:
    postgres -D /usr/local/var/postgres