23. ID Command in Linux | Linux form zero to hero | linux crash course
🔍 ID Command in Linux – Complete Beginner Guide
In this video, we explore the id command in Linux, a simple yet powerful utility used to display user identity information. Whether you're a Linux beginner, system administrator, DevOps engineer, or preparing for certifications like LPIC-1 or RHCSA, understanding the id command is essential.
The id command allows you to quickly check:
• User ID (UID)
• Primary Group ID (GID)
• Supplementary group memberships
• Numeric vs named output
• Real vs effective user and group IDs
You’ll learn how Linux identifies users, how permissions are linked to UID and GID, and how this command helps troubleshoot access and permission issues in real-world environments.
📌 Topics covered:
Display identity of the current user
Check another user’s identity
Show only UID or GID
Display group memberships
Use options like -u, -g, -G, -n, and -r
Practical examples for system administration
This lesson is perfect for anyone building a strong Linux foundation.
If you're following my Linux crash course series, this video will strengthen your understanding of user and permission management.
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