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Accepted
Jonas Heinze
Asked: 2020-07-06 08:15:17 +0800 CST

更改 linux 外壳

  • 772

在我的 Centos7 服务器上，我为我的用户提供了不同的 shell。

例如，作为 root 的终端如下所示：

[root@hostname www]#.

终端作为不同用户的样子bash-4.2$。

如果我键入echo $0以获取当前使用的 shell，我将/bin/bash访问我的不同用户和-bash我的 root。

我是否必须为我的不同用户配置 shell，以使其看起来像我的 root 的 shell？

有没有办法使用 Debian ( bash) 中使用的 shell 来查看我所在位置的完整路径？（root@server:/var/www#而不是root@server www）。

谢谢你的帮助。

linux terminal-server shell terminal centos7

2 个回答

  1. Best Answer

    听起来您的用户缺少骨架文件， default.bashrc等.bash_profile，这些文件通常从/etc/skel创建用户时复制到用户的主目录中。如果这些文件丢失或损坏，您可以自己复制这些文件。

    • 4

  2. 用户的提示由 shell 变量 PS1、PS2、PS3、PS4 的值决定。

    PS1 – The value of this parameter is expanded and used as the primary prompt string. 
      The default value for Bash is \s-\v\$ .
PS2 – The value of this parameter is expanded as with PS1 and used as the secondary 
      prompt string. The default value for Bash is >
PS3 – The value of this parameter is used as the prompt for the select command
PS4 – The value of this parameter is expanded as with PS1 and the value is printed 
      before each command bash displays during an execution trace.

    通常用户只自定义 PS1。

    Bash 允许通过插入一个或多个转义的特殊字符来自定义这些变量：

    \a : ASCII bell character
\d : The date in “Weekday Month Date” format (e.g., “Tue May 26”)
\D{format} : the format is passed to strftime(3) and the result is inserted into
the prompt string; an empty format results in a locale-specific time representation. 
The braces are required
\e : Tne ASCII escape character
\h : The hostname up to the first ‘.’
\H : The full hostname
\j : The number of jobs currently managed by the shell
\l : The basename of the shell's terminal device name
\n : A newline
\s : The name of the shell
\t : The current time in 24-hour HH:MM:SS format
\T : The current time in 12-hour HH:MM:SS format
\@ : The current time in 12-hour am/pm format
\A : The current time in 24-hour HH:MM format
\u : The username of the current user
\v : The current version of bash (e.g., 2.00)
\V : The current release of bash, version and patch level (e.g., 4.12.0)
\w : The current working directory, with $HOME abbreviated with a tilde
\W : The basename of the current working directory, with $HOME abbreviated 
     with a tilde
\! : The history number of this command
\# : The command number of this command
\$ : If the effective UID is 0, a #, otherwise a $
\nnn : The character corresponding to the octal number nnn
\\ : A backslash
\[ : Begin sequence of non-printing characters, which could be used to embed 
     a terminal control sequence into the prompt
\] : End sequence of non-printing characters

    例子：

    fpm@fpmurphy ~]$ PS1="[\d \t \u@\h:\w ] $ "
[Sun Jul 05 23:44:17 fpm@fpmurphy:~ ] $

    要在重新启动或注销时保留自定义提示，请将提示添加到 users $HOME/.bashrc，或使其成为所有用户的默认提示，根据您的发行版将其添加到/etc/bashrc或创建一个条目。/etc/bashrc.d

    • 1

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