How to retrieve available RAM from Windows command line

Question

Is there a command line utility within Windows or third-party program that can retrieve available RAM on a machine   Since I don t believe this can be done in pure JAVA  since it is run within a virtual machine  that has preset   allocated RAM

User · Answer

Here is a pure Java solution actually   public static long getFreePhysicalMemory         com sun management OperatingSystemMXBean bean                com sun management OperatingSystemMXBean                      java lang management ManagementFactory getOperatingSystemMXBean        return bean getFreePhysicalMemorySize

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PS C  Users Rack gt  systeminfo   findstr  System Memory  System Boot Time           5 5 2016  11 10 41 PM System Manufacturer        VMware  Inc  System Model               VMware Virtual Platform System Type                x64-based PC System Directory           C  Windows system32 System Locale              en-us English  United States  Total Physical Memory      40 959 MB Available Physical Memory  36 311 MB Virtual Memory  Max Size   45 054 MB Virtual Memory  Available  41 390 MB Virtual Memory  In Use     3 664 MB

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Try MemLog  It does the job perfectly and quickly   Download via one of many mirrors  e g  this one  SoftPedia page for MemLog   MemLog s author has a web site  But this is down some times  Wayback machine snapshot here    Example output   C   gt memlog 2012 02 01 13 22 02 878956544 -1128333312 2136678400 2138578944 -17809408 2147352576   878956544 being the free memory

User · Answer

Use wmic computersystem get TotalPhysicalMemory  E g    C   gt wmic computersystem get TotalPhysicalMemory TotalPhysicalMemory 4294500352

User · Answer

systeminfo is a command that will output system information  including available memory

User · Answer

wmic OS get TotalVisibleMemorySize  Value   Note not TotalPhysicalMemory as suggested elsewhere

User · Answer

wmic OS get FreePhysicalMemory  Value

User · Answer

Bit old but I wanted to know similar  Just adding the solution I came across since IMO the best answer came from Everardo w  Physical Memory     wmic OS get FreePhysicalMemory  Value   This lead me to look deeper into wmic    Keep in mind Free Physical Memory is not the type to look at   wmic OS get FreePhysicalMemory FreeVirtualMemory FreeSpaceInPagingFiles  VALUE  This returns something like     FreePhysicalMemory 2083440 FreeSpaceInPagingFiles 3636128 FreeVirtualMemory 842124

User · Answer

This cannot be done in pure java  But you can run external programs using java and get the result   Process p Runtime getRuntime   exec  systeminfo    Scanner scan new Scanner p getInputStream     while scan hasNext         String temp scan nextLine        if temp equals  Available Physical Memmory            System out println  RAM   temp split      1           break

User · Answer

There is a whole bunch of useful low level tools from SysSnternals   And psinfo may be the most useful   I used the following psinfo switches   -h        Show installed hotfixes  -d        Show disk volume information    Sample output is this   c  gt  psinfo   development -h -d  PsInfo v1 6 - local and remote system information viewer Copyright  C  2001-2004 Mark Russinovich Sysinternals - www sysinternals com   System information for   DEVELOPMENT  Uptime  28 days  0 hours  15 minutes  12 seconds Kernel version  Microsoft Windows XP  Multiprocessor Free Product type Professional Product version  5 1 Service pack  0 Kernel build number  2600 Registered organization  Sysinternals Registered owner  Mark Russinovich Install date  1 2 2002  5 29 21 PM Activation status  Activated IE version  6 0000 System root  C  WINDOWS Processors  2 Processor speed  1 0 GHz Processor type  Intel Pentium III Physical memory  1024 MB Volume Type Format Label Size Free Free A  Removable 0  C  Fixed NTFS WINXP 7 8 GB 1 3 GB 16  D  Fixed NTFS DEV 10 7 GB 809 7 MB 7  E  Fixed NTFS SRC 4 5 GB 1 8 GB 41  F  Fixed NTFS MSDN 2 4 GB 587 5 MB 24  G  Fixed NTFS GAMES 8 0 GB 1 0 GB 13  H  CD-ROM CDFS JEDIOUTCAST 633 6 MB 0  I  CD-ROM 0  Q  Remote 0  T  Fixed NTFS Test 502 0 MB 496 7 MB 99  OS Hot Fix Installed Q147222 1 2 2002 Q309521 1 4 2002 Q311889 1 4 2002 Q313484 1 4 2002 Q314147 3 6 2002 Q314862 3 13 2002 Q315000 1 8 2002 Q315403 3 13 2002 Q317277 3 20 2002

User · Answer

Just in case you need this functionality in a Java program  you might want to look at the sigar API  http   www hyperic com products sigar  Actually  this is no answer to the question  I know  but a hint so you don t have to reinvent the wheel

[windows] How to retrieve available RAM from Windows command line?

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