fio:tldr:93a6c

The command sudo fio ${path-to-job_file} is used to run the fio (Flexible I/O Tester) tool with elevated privileges (sudo) and specify the path to a job file.

Here is a breakdown of the command:

• sudo: It is a command in Unix-like operating systems that allows a user with appropriate permissions to execute a command as the superuser or another user.
• fio: It is a powerful and flexible benchmark tool used for measuring and evaluating I/O (input/output) performance.
• ${path-to-job_file}: This is a placeholder that should be replaced with the actual path to the job file you want to use. The job file is a configuration file for fio that specifies the I/O workload parameters, such as the type of I/O, block size, access pattern, duration of the test, etc.

By running this command, you execute the fio tool with the specified job file and perform the I/O benchmarking or testing according to the defined parameters. The use of sudo may be necessary if the user executing the command requires elevated privileges to access certain resources or perform specific operations.