What is available in free command?

free Command Examples

free: the unused memory. shared: memory used by tmpfs. buff/cache: the combined memory filled by kernel buffers, page cache, and slabs. available: estimated free memory that can be used without starting to swap.

What is the use of free command in Linux?

In Linux systems, you can use the free command to get a detailed report on the system’s memory usage. The free command provides information about the total amount of the physical and swap memory, as well as the free and used memory.