是否可以更改我的终端窗口提示文本？

我的终端窗口默认提示文本占用太多空间（我猜我的计算机名太长）。

我可以自定义吗？

是的，可以使用PS1环境变量进行自定义。

您可以通过在您的.bash_profile或.profile文件中放置以下内容来进行设置：

PS1="your prompt"

如果您想要一个非常简单的bash提示符，它根本不占用太多空间（这似乎是您要找的东西），则可以将其设置为仅显示当前目录，如下所示：

PS1="\w "

该\w是一个很多bash的PS1转义序列。这将扩展到当前目录。

这是我的/ etc / prompt文件，我从/ etc / profile中获取。它使用名称，机器名称，目录名称，颜色（取决于用户）的颜色，并且大部分是bash联机帮助页某些部分的无耻复制：

#
# PROMPTING
#       When  executing  interactively, bash displays the primary prompt PS1 when it is ready to read a command, and the sec-
#       ondary prompt PS2 when it needs more input to complete a command.  Bash allows these prompt strings to be  customized
#       by inserting a number of backslash-escaped special characters that are decoded as follows:
#              \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 + patchelvel (e.g., 2.00.0)
#              \w     the current working directory
#              \W     the basename of the current working directory
#              \!     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
#
#       The  command  number and the history number are usually different: the history number of a command is its position in
#       the history list, which may include commands restored from the history file (see HISTORY below),  while  the  command
#       number  is  the  position in the sequence of commands executed during the current shell session.  After the string is
#
# colors:
# \[...\]   needed, so the shell knows, that this isn't printable output, and newlines are placed at the right position.
#
# ANSI COLORS
CRE="\[
[K\]"
NORMAL="\[[0;39m\]"
# RED: Failure or error message
RED="\[[1;31m\]"
# GREEN: Success message
GREEN="\[[1;32m\]"
# YELLOW: Descriptions
YELLOW="\[[1;33m\]"
# BLUE: System messages
BLUE="\[[1;34m\]"
# MAGENTA: Found devices or drivers
MAGENTA="\[[1;35m\]"
# CYAN: Questions
CYAN="\[[1;36m\]"
# BOLD WHITE: Hint
WHITE="\[[1;37m\]"
#
# default:
# postgres, oracle
#
# PS1=$BLUE"asux]->"$NORMAL\\w"$BLUE ø $NORMAL"
PS1=$BLUE"asux]:"$NORMAL\\w"$BLUE > $NORMAL"
#
# root, stefan:
#
case "$UID" in
    '0')
        PS1=$RED"asux:"$NORMAL\\w"$RED # $NORMAL"
    ;;
    '1000')
    PS1=$GREEN"asux:"$BLUE\\w$YELLOW" > "$NORMAL
    ;;
#    default)
#    ;;
esac

asux是我的机器名称，请用您的机器名称替换。通常的用法是为普通用户和超级用户使用不同的颜色（红色为root）和提示（>为用户，＃为root）。如果您经常使用ssh，则计算机名称将很有帮助，并且如果您仅使用2-3个不同的主机，则使用不同的颜色。

我为用户“ postgresql”或“ oracle”使用了不同的颜色，但是我不再需要它了。