想必在命令行模式用久了，都看厌了那个单调又丑的提示符，个人认为还占了些位，要是命令长的话还会断行.
想改成
cd ~/ touch .bash_profile vim .bash_profile
osx环境下操作的，关键语法 [颜色]prompt参数[$reset] 例如：[$red] [$reset]
reset=$(tput sgr0) green=$(tput setaf 2) yellow=$(tput setaf 3) blue=$(tput setaf 4) magenta=$(tput setaf 5) cyan=$(tput setaf 6) PS1="[$magenta]u[$reset] at [$blue]h[$reset] in [$yellow]W [$reset][$green]$[$reset]" export PS1
:wq 保存离开
source .bash_profile
tput命令使用方式
prompt参数:
- 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
- : newline(换行)
- : carriage return
- s : the name of the shell, the basename of $0 (the portion following the final slash)
- : 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
- 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 $
- nn : 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