Which of the following configuration files should be modified to set default shell variables for all users?

The correct answer is B. /etc/profile. /etc/profile is the system-wide initialization file sourced by login shells for all users, making it the correct place to set default shell variables globally. Option A (/etc/bashrc) is a common distractor - while it exists on some distros (like Red Hat-based systems), it's…

Shells and Shell Scripting

Question

Which of the following configuration files should be modified to set default shell variables for all users?

Options

A/etc/bashrc
B/etc/profile
C~/.bash_profile
D/etc/.bashrc

How the community answered

(42 responses)

A
5% (2)
B
74% (31)
C
14% (6)
D
7% (3)

Explanation

/etc/profile is the system-wide initialization file sourced by login shells for all users, making it the correct place to set default shell variables globally. Option A (/etc/bashrc) is a common distractor - while it exists on some distros (like Red Hat-based systems), it's intended for interactive non-login shells and is not the canonical cross-distro answer for all users. Option C (~/.bash_profile) only applies to the individual user whose home directory it lives in, not all users. Option D (/etc/.bashrc) is not a real standard path - .bashrc belongs in /etc/ as /etc/bashrc, and even then it serves non-login shells rather than being the primary global config.

Memory tip: Think of /etc/profile as the "profile for everyone" - /etc/ means system-wide, and profile = the first thing a user's login shell reads.

Topics

#shell configuration files#system-wide settings#login shell initialization#environment variables

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