How to Use Linux’s source Command to Refresh Environments and Run Scripts

This guide explains the Linux source command, covering its syntax, how to refresh the current shell environment, execute scripts within the same session, import functions, and read variables from other scripts, with practical examples and command-line illustrations.

BashEnvironmentLinux

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How to Use Linux’s source Command to Refresh Environments and Run Scripts

Liangxu Linux

Nov 14, 2020 · Fundamentals

Mastering Shell Script Reuse: Calling External Scripts and Functions in Linux

This guide explains how to execute external shell scripts, import their functions and variables using source, dot, or sh commands, compares their behaviors, and provides practical patterns—including case dispatch and a generic function‑call template—to enable reliable script reuse in Linux environments.

LinuxShell scriptingbash functions

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Mastering Shell Script Reuse: Calling External Scripts and Functions in Linux