主贴直达：https://testerhome.com/topics/11333

• (1).What is the name and the UID of the administrator user?
• (2).How to list all files, including hidden ones, in a directory?
• (3).What is the Unix/Linux command to remove a directory and its contents?
• (4).Which command will show you free/used memory? Does free memory exist on Linux?
• (5).How to search for the string "my konfi is the best" in files of a directory recursively?
• (6).How to connect to a remote server or what is SSH?
• (7).How to get all environment variables and how can you use them?
• (8).I get "command not found" when I run ifconfig -a. What can be wrong?
• (9).What happens if I type TAB-TAB?
• (10).What command will show the available disk space on the Unix/Linux system?
• (11).What commands do you know that can be used to check DNS records?
• (12).What Unix/Linux commands will alter a files ownership, files permissions?
• (13).What does chmod +x FILENAMEdo?
• (14).What does the permission 0750 on a file mean?
• (15).What does the permission 0750 on a directory mean?
• (16).How to add a new system user without login permissions?
• (17).How to add/remove a group from a user?
• (18).What is a bash alias?
• (19).How do you set the mail address of the root/a user?
• (20).What does CTRL-c do?
• (21).What is in /etc/services?
• (22).How to redirect STDOUT and STDERR in bash? (> /dev/null 2>&1)
• (23).What is the difference between UNIX and Linux.
• (24).What is the difference between Telnet and SSH?
• (25).Explain the three load averages and what do they indicate. What command can be used to view the load averages?
• (26).Can you name a lower-case letter that is not a valid option for GNU ls?
• (27).What is a Linux kernel module?
• (28).Walk me through the steps in booting into single user mode to troubleshoot a problem.
• (29).Walk me through the steps you'd take to troubleshoot a 404 error on a web application you administer.

主贴直达：https://testerhome.com/topics/11333