Ubuntu terminal pathname is too long

Open the .bashrc file

Enter in the terminal: vi ~/.bashrc (or vim ~/.bashrc if vim is installed)

At the end of the file, add

export PS1='[\u@\h \w]$ '

in,

\u means the current username

\h represents the current hostname (hostname)

\w means the current path

In fact, it can also be reduced to a shorter one and only keep the current path, as follows

export  PS1= '[\w]$ '

Save and exit, and restart the terminal.