Q&A Session

Interview with Sudheer Kabeer - sudheer.xyz

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Q1: How do I list all users and groups in Linux?

Friend: How can I see all users and groups on my system?

Sudheer Kabeer: You can use these commands:

cat /etc/passwd   # all users
cat /etc/group    # all groups

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Q2: Why is sudo not working for my user?

Friend: My user can't run sudo commands. Why?

Sudheer Kabeer: Because that user is not in sudo group.

sudo usermod -aG sudo username

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Q3: I see many system users like nobody, sshd. What are they?

Friend: What are users like nobody and sshd?

Sudheer Kabeer: They are system service users, not real login users.

Examples:

nobody  -> limited permission user
sshd    -> SSH service account
www-data -> web server user

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Q4: How do I move website files to another drive?

Friend: I want to move my website files to HDD. How?

Sudheer Kabeer: Mount the HDD and move your data:

sudo mkdir -p /mnt/hdd
sudo mount /dev/sdb1 /mnt/hdd

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Q5: Will users share HDD storage safely?

Friend: If I move everything to HDD, will all users access it?

Sudheer Kabeer: Not automatically. You must use groups and permissions.

sudo groupadd webdata
sudo usermod -aG webdata user1
sudo chown -R user1:webdata /mnt/hdd/site

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Q6: Can I make all users admin?

Friend: Can I just give sudo to all users?

Sudheer Kabeer: You can, but it is unsafe and breaks isolation.

sudo usermod -aG sudo username

But this is NOT recommended for hosting servers.

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Q7: Final architecture recommendation?

Friend: What is the best setup for my server?

Sudheer Kabeer:

Keep this structure:

/ (SSD) -> OS + CloudPanel
/mnt/hdd -> websites + databases + uploads

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© Sudheer Kabeer - sudheer.xyz