My Mac may be set wrong when setting environment variables, and now the whole Mac's vi,ls and other commands are not going to execute.

1, enter on the command line
Export Path=/usr/bin:/usr/sbin:/bin:/sbin:/usr/x11r6/bin
This guarantees that command-line commands can be used temporarily. Do not close the terminal until after the command has been executed
or execute the VI command under Cd/usr/bin.
2. Recover Bash_profile Files


3. It is possible that your PATH environment variable is set incorrectly, such as $PATH leaking
Path= $PATH: $PATH 1

4. Immediate effect, source ~/.bash_profile

My Mac may be set wrong when setting environment variables, and now the whole Mac's vi,ls and other commands are not going to execute.