Introduction to the 'lsmem' Command

Using the Linux Command lsmem

Introduction to the Command

The Linux command lsmem is a tool used to view the system’s physical memory layout. It can be used to view the total system memory, the memory ranges used by each memory type, and the memory ranges used by each memory type. It is an easy way to view the memory layout of a system.

Basic Usage and Syntax

The basic syntax for using lsmem is as follows:

  lsmem [options]
  

The options available for lsmem are:

• -a: Display all memory information.
• -b: Display memory blocks.
• -l: Display memory layout.
• -m: Display memory map.
• -n: Display memory nodes.
• -p: Display physical memory.
• -s: Display system memory.
• -v: Display verbose output.

Examples of Common Use Cases

The most common use case for lsmem is to view the total system memory, the memory ranges used by each memory type, and the memory ranges used by each memory type.

For example, to view the total system memory, use the following command:

  lsmem -s
  

To view the memory ranges used by each memory type, use the following command:

  lsmem -m
  

To view the memory layout, use the following command:

  lsmem -l
  

Advanced Options and Flags

The lsmem command has several advanced options and flags that can be used to customize the output.

• -c: Display memory blocks in csv format.
• -f: Display memory blocks in flat format.
• -h: Display help.
• -i: Display memory blocks in info format.
• -k: Display memory blocks in kilobytes.
• -t: Display memory blocks in text format.
• -x: Display memory blocks in hexadecimal.

Examples in Real-World Scenarios

The lsmem command can be used in a variety of real-world scenarios. For example, to view the memory layout of a system, use the following command:

  lsmem -l
  

To view the total system memory, use the following command:

  lsmem -s
  

To view the memory ranges used by each memory type, use the following command:

  lsmem -m
  

Troubleshooting Tips and Potential Errors

When using lsmem, it is important to be aware of any potential errors that may occur. If an error does occur, it is important to check the output for any error messages. Additionally, it is important to ensure that the syntax is correct, as incorrect syntax can lead to errors.