如何在提示中显示目录？

Question

如何在我的提示中显示 $ 之前的目录？

Answer 1

bash 手册页有一个转义序列列表，您可以将其放入提示中，以便 shell 展开它们。在“提示”下查看，您会找到此表：

          \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  repre?
                 sentation.  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

你想要的是\w，所以就做

PS1="\w $ "

这将更改当前shell。您可以将定义放在 .profile 中以使其保持不变。