The /proc Filesystem

cat /proc/cpuinfo

cat /proc/meminfo

cat /proc/loadavg

cat /proc/version

cat /proc/cmdline

cat /proc/devices

cat /proc/dma

cat /proc/fb

cat /proc/filesystems

cat /proc/interrupts

cat /proc/iomem

cat /proc/ioports

cat /proc/locks

cat /proc/misc

cat /proc/modules

cat /proc/mounts

cat /proc/partitions

cat /proc/pci

cat /proc/stat

cat /proc/swaps

cat /proc/uptime

cat /proc/mtrr

cat /proc/net/tcp6

cat /proc/net/udp6

cat /proc/net/raw6

cat /proc/net/igmp6

cat /proc/net/if_inet6

cat /proc/net/ipv6_route

cat /proc/net/rt6_stats

cat /proc/net/sockstat6

cat /proc/net/snmp6

cat /proc/net/arp

cat /proc/net/dev

cat /proc/net/dev_mcast

cat /proc/net/netstat

cat /proc/net/raw

cat /proc/net/route

cat /proc/net/rt_cache

cat /proc/net/snmp

cat /proc/net/sockstat

cat /proc/net/tcp

cat /proc/net/udp

cat /proc/net/unix

cat /proc/net/wireless

cat /proc/net/igmp

cat /proc/net/psched

cat /proc/net/netlink

cat /proc/bus/pci/devices

cat /proc/scsi/scsi

cat /proc/scsi/device_info

cat /proc/scsi/sg/version

cat /proc/scsi/sg/debug

cat /proc/scsi/sg/def_reserved_size

cat /proc/slabinfo

cat /proc/stat

cat /proc/swaps

cat /proc/sys/fs/<various files>

cat /proc/sys/kernel/<various files>

cat /proc/sys/net/ipv4/<various files>

cat /proc/sys/net/ipv6/<various files>

cat /proc/sys/vm/<various files>

cat /proc/sys/dev/<various files>