What this snippet does
set -a exports everything assigned while it is active, which is the usual .env trick.
Expected output
postgres://localhost:5432/app
Why practise typing this
Typing environment & shell code builds muscle memory for the symbols and indentation Linux uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Linux practice
- Exporting a variableEnvironment & Shell · beginner
- Variables do not escape a subshellEnvironment & Shell · beginner
- Adding to PATHEnvironment & Shell · intermediate
- Creating a shortcutEnvironment & Shell · beginner
- Searching your historyEnvironment & Shell · intermediate
- Secrets land in historyEnvironment & Shell · intermediate