getpagesize - Linux

Overview

getpagesize is a utility that displays the size of a memory page on the system. A memory page is the smallest unit of memory that can be allocated to a process.

Syntax

getpagesize [OPTION]...

Options/Flags

• -h, –help
  Print help and exit.

• -V, –version
  Print version and exit.

Examples

To display the size of a memory page in bytes:

getpagesize

To store the size of a memory page in bytes in a variable:

pageSize=$(getpagesize)

Common Issues

None known.

Integration

getpagesize can be used with other commands to manage memory usage. For example, the following command can be used to display the amount of free memory on the system:

free -h | awk '/Mem:/ {printf("Free memory: %.2f GB\n", $4 / 1024 / 1024)}'

Related Commands

• free – Display free and used memory on the system.
• vmstat – Display virtual memory statistics.
• top – Display the top processes using memory.