Results for “exec”
Small, practical examples. Search by task or narrow things down below.
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
Restore the working location after an operation
PowerShell: Push-Location and Pop-Location manage a directory stack; finally ensures restoration.
PowerShell✓ Tested
Retrieve a file from a stopped container
Docker / Compose: The writable layer remains available for docker cp after exit.
Docker / Compose✓ Tested
Run a command in a running container
Execute an additional process inside an existing container.
exec✓ Tested
Run a command safely for each matching file
Linux Commands: Use find -exec with argument placeholders so spaces in filenames remain intact.
Linux Commands✓ Tested
Run a one-off process with a numeric user ID
Docker / Compose: The user option overrides the image’s default identity.
Docker / Compose✓ Tested
Set a container’s own hostname
Docker / Compose: hostname changes the name reported inside the container.
Docker / Compose✓ Tested
Set an image’s default command
Use JSON array syntax for a predictable command.
Dockerfile✓ Tested
Accept either of two conditions
SQL: Use OR to keep matching names or out-of-stock rows.
SQL✓ Tested
Add an optional field to an existing table
SQL: A nullable column permits existing rows to remain valid while data is filled later.
SQL✓ Tested
Add values across several rows
SQL: Use SUM to calculate a total quantity.
SQL✓ Tested
Apply a default when an insert omits a column
SQL: A default supplies an omitted value; an explicit NULL still follows the column’s nullability rules.
SQL✓ Tested