Directory /proc

  • Run-time interface with the Kernel environment:
    info about running processes, memory, hardware, IRQ, kernel structures;
    tuning kernel parameters on a fly.

    Examples
  • CPU info 
    cat /proc/cpuinfo

  • Info about the OS version 
    cat /proc/version

  • Files containing network parameters 
    ls /proc/sys/net/ipv4

  • Enable network packet forwarding 
    echo '1' > /proc/sys/net/ipv4/ip_forward

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