mac 终端 - 删除前缀美元符号的文本

Question

有谁知道如何删除mac终端中美元符号前缀的文本？

例如，

Peters-MacBook-Pro:~ peter$ ls my_dir

应该成为

$ ls my_dir

Answer 1

提示通常配置在PS1环境变量中。PS2、PS3和PS4都在其他位置使用，您可能希望在某个时候修改它们。要获得更好的提示，请PS1在 shell 启动文件中设置，通常为~/.bashrc：

export PS1='\$ '  # Note ' quotes rather than " quotes

使用\$会将提示更改为何#时uid==0- 例如：

$ sudo -s
# 
# exit
$ 

在执行该rm -r *命令之前非常有用的提示。

您可以将更多内容放入您的PS1:

          \a     an ASCII bell character (07)
          \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     an ASCII escape character (033)
          \h     the hostname up to the first `.'
          \H     the hostname
          \j     the number of jobs currently managed by the
                 shell
          \l     the basename of the shell's terminal device
                 name
          \n     newline
          \r     carriage return
          \s     the name of the shell, the basename of $0
                 (the portion following the final slash)
          \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 version of bash (e.g., 2.00)
          \V     the release of bash, version + patch level
                 (e.g., 2.00.0)
          \w     the current working directory, with $HOME
                 abbreviated with a tilde (uses the value of
                 the PROMPT_DIRTRIM variable)
          \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
          \[     begin a sequence of non-printing characters,
                 which could be used to embed a terminal
                 control sequence into the prompt
          \]     end a sequence of non-printing characters

有些人喜欢为他们的提示添加颜色。我觉得它很烦人，每次尝试时，我都会在几分钟后再次将其关闭。但有些人喜欢金光闪闪。:)

Answer 2

就像在任何其他bash控制台中一样，执行：

PS1="$ "