centos runs the installed command prompt that it cannot be found

Problem:

The command has been installed, but when executed, it prompts that it cannot be found.

For example, execute:

ifconfig

The prompt command does not exist.

Solution:

Use the following command.

# /sbin/ifconfig

Cause: The system default environment variable settings are incorrect.

Execute echo $PATH under ordinary users and root users respectively. There are four addresses missing in PATH: /sbin:/usr/sbin:/usr/local/sbin:/usr/kerberos/ sbin and ifconfig is just inside /sbin.

or

cat /etc/profile

can be found that there is no environment variable for /sbin.

su Enter root and run gedit /etc/profile

Add the following statement at the end of the file:

PATH=$PATH:/sbin ＃在PATH变量后追加/sbin目录
export PATH=$PATH:/sbin＃设置变量为全局的

Save and exit.

Modify /home/user/.bash_profile and add the paths /sbin:/usr/sbin:/usr/local/sbin:/usr/kerberos/sbin after PATH.

After completing the modification, execute the command: . .bash_profile. You can also log out or restart to make the newly modified content take effect.

Recommended related tutorials: centos tutorial

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