Làm thế nào để bạn thực hiện các thay đổi màu sắc nhắc nhở Bash khi đăng nhập vào một máy chủ?

Is there a way to make the Bash Prompt dynamic so that it changes color when I am logged into a server? I want the color to be green when using my own personal system, but change to red whenever I am connected to servers. I have a huge number of servers that I access and do not want to have to put a different .bashrc on each and every one of them.

Remote Bash Prompts are set by the remote ~/.bashrc, so you will still need to copy it to the remote servers. However, you can use a single ~/.bashrc for all hosts and set the Bash Prompt color based on the host name:

Notes

• Do not set PS1 if it is not already set (i.e. if the shell is not interactive). Testing to see if PS1 is “non-empty” is a very common way to find out if the shell is interactive and you do not want to confuse programs that do that (arguably, a more accurate test is checking to see if $- contains i).
• If you want this code to run when logging into a remote server, you should have one of the profile files always source ~/.bashrc (I am assuming you know that).
• In PS1, the escape codes must be enclosed in […].
• [033[m resets the foreground and background to their defaults, so here :w appears in the terminal foreground/background.
• [033[48;5;XXXm33[38;5;YYYm sets the background/foreground to XXX/YYY.
• For a script that dumps the available colors, try colortest.
• To check and see what the Bash Prompt would look like, use: echo -e “<33[48;5;16m33[38;5;196mhost33[m:dir>$ “