![]() \[ : begin a sequence of non-printing characters, which could be used to embed a terminal control sequence into the prompt.\nnn : the character corresponding to the octal number nnn.\$ : if the effective UID is 0, a #, otherwise a $.\# : the command number of this command.\! : the history number of this command.\W : the basename of the current working directory, with $HOME abbreviated with a tilde.\w : the current working directory, with $HOME abbreviated with a tilde.\V : the release of bash, version + patch level (e.g., 2.00.0).\A : the current time in 24-hour HH:MM format.: the current time in 12-hour am/pm format.\T : the current time in 12-hour HH:MM:SS format.\t : the current time in 24-hour HH:MM:SS format.\s : the name of the shell, the basename of $0 (the portion following the final slash).\l : the basename of the shell’s terminal device name. ![]() \j : the number of jobs currently managed by the shell.I tested PS : 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 first character of PS4 is replicated multiple times, as necessary, to indicate multiple levels of indirection. 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.PS3 – The value of this parameter is used as the prompt for the select command.PS2– The value of this parameter is expanded as with PS1 and used as the secondary prompt string.PS1 – The value of this parameter is expanded (see PROMPTING below) and used as the primary prompt string.PS0 – The value of this parameter is expanded (see PROMPTING below) and displayed by interactive shells after reading a command and before the command is executed.If set, the value is executed as a command prior to issuing each primary prompt. You need to set PS1, PS2, PS3 and PS4 variable. Prompt is control via a special shell variable. Configure the appearance of the terminal.How to customizing a bash shell to get a good looking prompt.
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