do

do [options] command [args...]

do is a simple utility for repeatedly executing commands. It provides options for controlling iteration count, timing, and termination conditions based on command exit status.The tool is useful for polling operations, retrying failed commands, and automated testing scenarios. It offers a simpler interface than while loops for common repetition patterns.Various implementations of 'do' exist with different feature sets. Behavior may vary depending on which version is installed.

COMMAND

Command to execute.

Arguments to pass to command.

Number of iterations.

Interval between executions.

Stop on success (zero exit).

Stop on failure (non-zero exit).

Display help information.

Name may conflict with shell builtins or other utilities. Different implementations have different options. May need escaping for shell-interpreted arguments.

Multiple utilities named 'do' exist across different systems and package repositories. The concept of command repetition is fundamental to shell scripting, with various tools providing convenient interfaces.

watch(1), while(1)