Operation Manual

DescriptionFile
ShowswhichDMA channelsare currently being
used.
/proc/dma
Showswhichinterruptsare in use,and how many
of eachhave beenin use.
/proc/interrupts
Displaysthe statusof I/O (input/output)memory./proc/iomem
ShowswhichI/O portsare in useat themoment./proc/ioports
Displaysmemory status./proc/meminfo
Displaysthe individual modules./proc/modules
Displaysdevicescurrently mounted./proc/mounts
Showsthepartitioningof all hard disks./proc/partitions
Displaysthe current versionof Linux./proc/version
Apart from the
/proc
file system,the Linux kernel exportsinformation with the
sysfs
module, an in-memory filesystem.This module represents kernel objects, their at-
tributes and relationships.For more information about
sysfs
, seethe context of udev
in Chapter 20, Dynamic Kernel Device Managementwith
udev
(↑Reference). Table A.4
contains an overviewof the most common directoriesunder
/sys
.
Table A.4 SystemInformationWith the /sys File System
DescriptionFile
Containssubdirectoriesfor each block devicediscovered
in the system.Generally,these are mostly disk type de-
vices.
/sys/block
Containssubdirectoriesfor each physicalbus type./sys/bus
Containssubdirectoriesgrouped togetheras a functional
types of devices (like graphics,net, printer,etc.)
/sys/class
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