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

Question

Options

• A/etc/profile
• B/etc/bashrc
• C~/.bash_profile
• D/etc/.bashrc
• E/etc/shellenv

• A
  86% (18)
• B
  5% (1)
• D
  5% (1)
• E
  5% (1)

Explanation

/etc/profile is the correct choice because it is a system-wide initialization file that is sourced for all users during login shell startup, making it the standard location for globally setting environment variables and shell variables across any POSIX-compatible shell.

Why the distractors are wrong:

• B. /etc/bashrc - This file is sourced for interactive non-login shells (on some distros), but it's Bash-specific and not universally present; it's better suited for aliases and functions, not global variable declarations across all users.
• C. ~/.bash_profile - The ~/ prefix means this is in a specific user's home directory, so it only affects that one user, not all users globally.
• D. /etc/.bashrc - This path doesn't conventionally exist; the system-wide Bash configuration lives at /etc/bashrc (no dot prefix in the /etc/ directory).
• E. /etc/shellenv - This is not a standard Linux configuration file and doesn't exist on typical systems.

Memory tip: Think of /etc/profile as the "everyone profile" - the /etc/ directory holds system-wide configs, and profile is the login script, so anything placed there runs for every user at every login.

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