O prompt geralmente é configurado na variável de ambiente PS1
. PS2
, PS3
e PS4
são todos usados em outros locais e talvez você queira modificá-los em algum momento. Para obter um prompt muito melhor, defina seu PS1
em seus arquivos de inicialização do shell, normalmente ~/.bashrc
:
export PS1='\$ ' # Note ' quotes rather than " quotes
Usar \$
mudará o aviso para #
quando uid==0
- por exemplo:
$ sudo -s
#
# exit
$
Dica muito útil antes de executar o comando rm -r *
.
Há muito mais coisas que você pode incluir no seu PS1
:
\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 + 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
Algumas pessoas adoram adicionar cor aos seus prompts . Eu acho isso perturbador, e cada vez que eu tentei, acabei desligando novamente em alguns minutos. Mas algumas pessoas adoram bling. :)