Assign with NAME=value without spaces around =. Export marks variables for child processes: export PATH="$HOME/bin:$PATH". Command substitution captures output: today=$(date +%F) or legacy backticks. Prefer $() — it nests cleanly.

Examples
Full content is available with a subscription.
Get full access to all courses on the platform for one year with a single payment.
Unlike other platforms that charge per course, here you get everything for one price, and after one year of use there will be no automatic charge for the following year.