/proc Folder Usage

Identify the I/O address range being used by device
cat /proc/ioports
List which registered ISA DMA channels is in use
cat /proc/dma
Display the current RAM useage
cat /proc/meminfo
List the various character and block devices currently configured (not including devices whose modules are not loaded).
cat /proc/devices
Identify the model information of cpu which used in the system
cat /proc/cpuinfo
Identify the parameters which passed to the kernel at boot time.
cat /proc/cmdline
List all currently loaded kernel modules
cat /proc/modules or /sbin/lsmod (more user friendly)
List IRQ usage of kernel drivers
cat /proc/interrupts


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