Web Reference: Jan 1, 2026 · Learn how to read, set, export, and persist environment and shell variables on Linux using Bash commands like printenv, env, set, and export. Variables have the following format: 1. The names of the variables are case-sensitive. By convention, environment variables should have UPPER CASE names. 2. When assigning multiple values to the variable they must be separated by the colon :character. 3. There is no space around the equals =symbol. Variables can be classified into two main categori... Discover how to manage and manipulate environment variables in Bash efficiently. This guide covers the essentials of setting, viewing, and unsetting these variables, as well as their scope and influence on your scripting work.
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