单项选择题
A. If present, the settings in the $HOME/.profile file will override the settings in the /etc/profile file.
B. If both $HOME/.profile and $HOME/.env files are present, the settings in the $HOME/.profile file will take precedence.
C. The settings in the /etc/environment file are system-wide and will override user customized settings in the $HOME/.profile.
D. The settings in the /etc/profile file will override settings in the $HOME/.profile file unless the $LOCAL_PROFILE variable is set to 'true'.
单项选择题 What command will allow the operator to add the current working directory to the command search path?（）
单项选择题 Which of the following commands can be used to show all disks configured on the system?（）
单项选择题 An operator needs to create /dir1/dir2/dir3. The /dir1 does not exist. What command can be used to create dir2 and dir3?（）