FreeBSD将SHELL从csh换成bash并支持中文显示

刚准备在FreeBSD下学习Shell，结果发现怎么好多命令都没有，比如declare。后来发现连bash都没有，好像bash用的多一些吧，于是就准备将csh换成bash。

由于没有bash，所以先得安装一个bash：

pkg install bash        -- 下载速度超慢，不过好在bash不大

root@www:/usr/ports/ports-mgmt/pkg # pkg install bash
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
All repositories are up to date.
The following 1 package(s) will be affected (of 0 checked):

New packages to be INSTALLED:
    bash: 4.4.12_1

Number of packages to be installed: 1

The process will require 8 MiB more space.
1 MiB to be downloaded.

Proceed with this action? [y/N]: y
[1/1] bash-4.4.12_1.txz                        : 100%    1 MiB  36.5kB/s    00:40   
Checking integrity... done (0 conflicting)
[1/1] Installing bash-4.4.12_1...
Extracting bash-4.4.12_1: 100%
Message from bash-4.4.12_1:
======================================================================

bash requires fdescfs(5) mounted on /dev/fd

If you have not done it yet, please do the following:

    mount -t fdescfs fdescfs /dev/fd

To make it permanent, you need the following lines in /etc/fstab:

    fdescfs    /dev/fd        fdescfs        rw,late    0    0

======================================================================

安装好了bash之后，用如下命令更换shell：

chsh -s /usr/local/bin/bash

root@www:/usr/ports/ports-mgmt/pkg # chsh -s /usr/local/bin/bash
chsh: user information updated

然后查看当前SHELL：

[root@www ~]# echo $SHELL
/usr/local/bin/bash

更换非root用户默认的shell，#chsh -s /usr/local/bin/bash username  -- 用实际的用户名替换

p.s.

freebsd安装了bash之后并不默认去读取.bashrc文件，如果想做设置类似

alias ls='ls - G'，那么应该直接添加到.profile里面然后：

source .profile就可以了

p.s.

为了支持中文显示，可以在.profile中添加如下内容：

export LANG=zh_CN.UTF-8
       export LC_CTYPE=zh_CN.UTF-8
       export LC_ALL=zh_CN.UTF-8