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javalinuxunixshsystem-information

How to find unix/linux sytem info using java or shell script?

How to find unix/linux system info like OS version, RAM, no. of processors, hard disk, memory dedicated to a particular process, memory utilization of java using java or shell scripts.

Solution

  • To find the version of the kernel, use uname -r in a shell script. All kinds of information regarding the hardware can be retrieved from the files in /proc.

    /proc/cpuinfo contains information about the CPU's, including their number. /proc/meminfo shows the total physical memory, free memory, etc.

    If you only want to fetch a particular field, you can filter the output like this:

    cat /proc/cpuinfo | grep "model name"

    df shows you all of the mounted storage devices and their used space.

    /proc/PID/status shows the amount of virtual memory dedicated to the process, where PID is the numeric process id.