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    Section A.2. Prompt String Customizations

    A.2. Prompt String Customizations

    Table A-2 shows a summary of the prompt customizations that are available. The customizations \[ and \] are not available in bash versions prior to 1.14. \a, \e, \H, \T, \@, \v, and \V are not available in versions prior to 2.0. \A, \D, \j, \l, and \r are only available in later versions of bash 2.0 and in bash 3.0.

    Table A-2. Prompt string format codes
    CommandMeaningAdded
    \aThe ASCII bell character (007).bash-1.14.7
    \AThe current time in 24-hour HH:MM format.bash-2.05
    \dThe date in "Weekday Month Day" format. 
    \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.bash-2.05b
    \eThe ASCII escape character (033).bash-1.14.7
    \HThe hostname.bash-1.14.7
    \hThe hostname up to the first ".". 
    \jThe number of jobs currently managed by the shell.bash-2.03
    \lThe basename of the shell's terminal device name.bash-2.03
    \nA carriage return and line feed. 
    \rA carriage return.bash-2.01.1
    \sThe name of the shell. 
    \TThe current time in 12-hour HH:MM:SS format.bash-1.14.7
    \tThe current time in HH:MM:SS format. 
    \@The current time in 12-hour a.m./p.m. format.bash-1.14.7
    \uThe username of the current user. 
    \vThe version of bash (e.g., 2.00).bash-1.14.7
    \VThe release of bash; the version and patchlevel (e.g., 3.00.0).bash-1.14.7
    \wThe current working directory. 
    \WThe basename of the current working directory. 
    \#The command number of the current command. 
    \!The history number of the current command. 
    \$If the effective UID is 0, print a #, otherwise print a $. 
    \nnnCharacter code in octal. 
    \\Print a backslash. 
    \[Begin a sequence of nonprinting characters, such as terminal control sequences. 
    \]End a sequence of nonprinting characters. 



      

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