linux echo environment variables code example

Example 1: print environment variables linux

ENV_VAR="hello world"
printenv ENV_VAR

Example 2: linux set environment variable

# Linux - Bash 

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

# example 
export ORACLE_SID='sales_database';

Example 3: setting environment variables bash

export VARNAME="my value"      # shorter, less portable version

Example 4: bash get environment variable

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