Solution to command not found problems in CentOS

Solution to command not found problems in CentOS

Today, when you open the centos system, all the commands suddenly fail to work normally, such as shutdown reboot ssh scp. Command not found is displayed.

Puzzling !!! A few days ago.

Find the configuration file/root/. bash_profile and modify it:

1. Enter the root path.

2. The. bash_profile file is hidden and displayed with the command ls-la.

3. Modify vi. bash_profile as follows:

#. Bash_profile


# Get the aliases and functions
If [-f ~ /. Bashrc]; then
.~ /. Bashrc
Fi


# User specific environment and startup programs


PATH = $ PATH: $ HOME/bin:/sbin:/usr/bin:/usr/sbin


Export PATH

Unset USERNAME

4. Save and exit

5. Directly shut down and restart (because the shutdown command is executed. So shut down directly), solve the problem after restart!