Results for “cut”
Small, practical examples. Search by task or narrow things down below.
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 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
Split a key-value pair once
Split a key-value pair once using a complete Go program with explicit sample inputs.
Go✓ Tested
Supply an environment variable to an exec process
Docker / Compose: An exec environment override applies to the new process only.
Docker / Compose✓ 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
Attach an overall count to every row
SQL: An uncorrelated scalar subquery supplies the same aggregate to each output row.
SQL✓ Tested
Block deletion of a referenced parent
SQL: The default foreign-key action prevents deletion while a child still refers to the parent.
SQL✓ Tested