linux read environment variable code example

Example 1: find all variables in server bash

Just type next command to list all environments varialbes in terminal:
printenv

Example 2: print environment variables linux

ENV_VAR="hello world"
printenv ENV_VAR

Example 3: linux set environment variable

# Linux - Bash 

# syntax 
# export *<variable-name>=*<variable-value>;

# example 
export ORACLE_SID='sales_database';