Aug 26, 2011
How To Check Memory Usage In Linux/RedHat/AIX
Linux OS comes with various set of commands to check memory usage. The free command displays total amount of free available RAM. This vmstat command displays information about processes, memory, block IO, paging, traps and CPU activity. The top command displays real time view of running system process.How To Check Free Memory In Linux
To check system free memory use below command with option '-m'.[root@ravisaive ~]# free -m
total used free shared buffers cached
Mem: 1001 913 87 0 162 244
-/+ buffers/cache: 507 493
Swap: 4000 13 3986
How To Check Virtual Memory In Linux
[root@ravisaive ~]# vmstat procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 0 0 14012 89280 166908 251268 0 0 104 131 6 6 2 1 97 1 0
How To Check Running Process In Linux
[root@ravisaive ~]# top OR [root@ravisaive ~]# ps fax
How To Check RAM Information In Linux
[root@ravisaive ~]# cat /proc/meminfo
How To Check Memory In AIX Unix
[root@ravisaive ~]# lsattr -El sys0 | grep realmem
How To Check Virtual Memory In AIX Unix
[root@ravisaive ~]# svmon -G
How To Check CPU Information In Linux
[root@ravisaive ~]# cat /proc/cpuinfo
How To Check What is Stored Inside Your RAM
[root@ravisaive ~]# sudo dd if=/dev/mem | cat | strings
About : Ravi Saive
Simple Word a Computer Geek and Linux Guru who loves to share tricks and tips on Internet. Most Of My Servers runs on Open Source Platform called Linux. Because it is usually free and allow me do geeky stuff such as Programming and Scripting with CLI (Command Line Interface).
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2 Responses to “How To Check Memory Usage In Linux/RedHat/AIX”
August 26, 2011 at 8:19 AM
can you please explain
sudo dd if=/dev/mem | cat | strings
this command . what exactly happend .
August 26, 2011 at 11:02 PM
The device /dev/mem is your system memory. You can actually copy any block or character device to a file with dd.
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