单项选择题

Which of the following commands will display, in MB, the total, used, and free blocks of the currently mounted filesystems?（）

A. df -m
B. du -m
C. df -vm
D. du -vm

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单项选择题

Which of the following is a correct statement about how the user environment is configured at login?（）

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?（）

A. export PATH=pwd
B. export PATH=$PWD
C. export PATH=$PATH:pwd
D. export PATH=$PATH:$PWD

单项选择题

Which of the following commands can be used to show all disks configured on the system?（）

A. lsdev -C disk
B. lsdev -P disk
C. lsdev -Cc disk
D. lsdev -Pc disk