Results for “ENV”
Small, practical examples. Search by task or narrow things down below.
Load environment variables from a file
Docker / Compose: An env file supplies one KEY=value assignment per line.
Docker / Compose✓ Tested
Load service variables from an env file
Docker / Compose: env_file supplies runtime environment values.
Docker / Compose✓ Tested
Override an env-file value explicitly
Docker / Compose: The environment section takes precedence over env_file.
Docker / Compose✓ Tested
Pass an environment value to a child process
PowerShell: The process environment is inherited by a launched child PowerShell process.
PowerShell✓ Tested
Pass an environment variable
Supply configuration without changing an image.
environment✓ Tested
Provide a default environment value
Set a runtime default that can be overridden at startup.
Dockerfile✓ Tested
Remove a variable from one child’s environment
Bash Scripts: env -u removes an inherited value for a single command.
Bash Scripts✓ Tested
Restore an environment value after temporary use
PowerShell: Use finally so temporary process configuration does not leak to subsequent work; remove the entry when it was originally absent.
PowerShell✓ Tested
Set an environment value for one child command
Bash Scripts: A command-prefix assignment is visible to that command without overwriting the shell’s current variable.
Bash Scripts✓ Tested
Set service environment values
Pass configuration through the Compose environment section.
Compose✓ Tested
Start a command with a minimal environment
Linux Commands: Use env -i with an explicit PATH for a controlled child environment.
Linux Commands✓ Tested
Supply an environment variable to an exec process
Docker / Compose: An exec environment override applies to the new process only.
Docker / Compose✓ Tested