What should I do if CentOS prompts that the command cannot be found?

What should I do if CentOS prompts that the command cannot be found?

1. If a certain command cannot be found, it means that the corresponding software package is not installed. Use Just run yum install to install it.

2. If all the commands cannot be found, the system environment variable PATH is wrong. The specific solution is as follows:

1. First check the value of the PATH variable

echo $PATH

Check whether the path contains:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin. If not, you need to add it manually;

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2. Use the root user to modify the profile (environment configuration) file: (all users)

/usr/bin/vi /etc/profile

Add: export PATH=$PATH:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

Save and exit.

3. Modify the .bashrc file: (individual user)

/usr/bin/vi ~/.bashrc

Add: export PATH=$PATH:/usr/local/sbin:/usr/local/bin:/sbin:/ bin:/usr/sbin:/usr/bin

Save and exit.

4. Use source to make the configuration take effect

source /etc/profile
source ~/.bashrc

Through the above operations, you will no longer be prompted that the command cannot be found.

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