# runlim > A tool for sampling and limiting time and memory usage of a program and its child processes using the proc file system on Linux. > More information: . - Print the time and memory usage of a command: `runlim {{command}} {{command_arguments}}` - Log statistics to a file instead of `stdout`: `runlim --output-file={{path/to/file}} {{command}} {{command_arguments}}` - Limit time to an upper bound (in seconds): `runlim --time-limit={{number}} {{command}} {{command_arguments}}` - Limit real-time to an upper bound (in seconds): `runlim --real-time-limit={{number}} {{command}} {{command_arguments}}` - Limit space to an upper bound (in MB): `runlim --space-limit={{number}} {{command}} {{command_arguments}}`