[Linux] Ubuntu system tips

1, BASHRC in the PS1

PS (Prompt sign): Refers to the command prompt

Ps1= ' ${debian_chroot:+ ($debian _chroot)}\[\033[01;32m\]\[email protected]\h\[\033[00m\]: \[\033[01;34m\]\w\[\033[ 00m\]\$ '

The meaning of the default special symbol in the environment:
\d: Represents the date, formatted as weekday month date, for example: "Mon-1"
\h: The full host name. For example: My machine name is: Fc4.linux, then this name is Fc4.linux
\h: Only the first name of the host is taken, as in the example above, then Fc4,.linux is omitted
\ t: Display time in 24-hour format such as: HH:MM:SS
\ t: Display time in 12-hour format
\a: Display time in 24-hour format: hh:mm
\u: Current user's account name
Version information for \v:bash
\w: The full working directory name. Home directory will be replaced by ~
\w: Use basename to get the working directory name, so only the last directory is listed
\#: The first few commands issued
\$: Prompt character, if root, Prompt is: #, normal user is: $

[Linux] Ubuntu system tips