Existe-t-il un moyen de changer la couleur de la police du chemin actuel dans termial ?

Le texte que vous avez mis en évidence est le prompt . Il est stocké dans le PS1 variable shell.

Vous pouvez lire la valeur actuelle avec

echo $PS1

puis le définir avec (par exemple)

PS1='\[\033[1;32m\]\h:\W \u$\[\033[0;39m\] '

où

• \[\033[1;32m\] commence à colorier en vert
• \h indique le nom de la machine
• \W le chemin actuel
• \u l'utilisateur
• \[\033[0;39m\] arrête la coloration

Le site caractères spéciaux mis en évidence par la barre oblique inversée sont décrites dans la page de manuel de bash

PROMPTING
       When  executing  interactively,  bash displays the primary prompt PS1 when it is ready to read a command, and the secondary 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 + 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

       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 decoded, it  is
       expanded via parameter expansion, command substitution, arithmetic expansion, and quote removal, subject to the value of the promptvars shell option (see the description of the shopt
       command under SHELL BUILTIN COMMANDS below).

Alors que les couleurs peuvent être changées avec des séquences d'échappement. Voir http://bluesock.org/~willg/dev/ansi.html pour une liste.