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QUESTION

Linux Fundamentals

  • What did you learn yesterday/this week?
  • Talk about your preferred development/administration environment. (OS, Editor, Browsers, Tools etc.)
  • Tell me about the last major Linux project you finished.
  • Tell me about the biggest mistake you've made in [some recent time period] and how you would do it differently today. What did you learn from this experience?
  • Why we must choose you?
  • What function does DNS play on a network?
  • What is HTTP?
  • What is an HTTP proxy and how does it work?
  • Describe briefly how HTTPS works.
  • What is SMTP? Give the basic scenario of how a mail message is delivered via SMTP.
  • What is RAID? What is RAID0, RAID1, RAID5, RAID10?
  • What is a level 0 backup? What is an incremental backup?
  • Describe the general file system hierarchy of a Linux system.

####[⬆] Simple Linux Questions:

  • What is the name and the UID of the administrator user?
  • How to list all files, including hidden ones, in a directory?
  • What is the Unix/Linux command to remove a directory and its contents?
  • Which command will show you free/used memory? Does free memory exist on Linux?
  • How to search for the string "my konfi is the best" in files of a directory recursively?
  • How to connect to a remote server or what is SSH?
  • How to get all environment variables and how can you use them?
  • I get "command not found" when I run ifconfig -a. What can be wrong?
  • What happens if I type TAB-TAB?
  • What command will show the available disk space on the Unix/Linux system?
  • What commands do you know that can be used to check DNS records?
  • What Unix/Linux commands will alter a files ownership, files permissions?
  • What does chmod +x FILENAMEdo?
  • What does the permission 0750 on a file mean?
  • What does the permission 0750 on a directory mean?
  • How to add a new system user without login permissions?
  • How to add/remove a group from a user?
  • What is a bash alias?
  • How do you set the mail address of the root/a user?
  • What does CTRL-c do?
  • What is in /etc/services?
  • How to redirect STDOUT and STDERR in bash? (> /dev/null 2>&1)
  • What is the difference between UNIX and Linux.
  • What is the difference between Telnet and SSH?
  • Explain the three load averages and what do they indicate. What command can be used to view the load averages?
  • Can you name a lower-case letter that is not a valid option for GNU
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