# arch
show architecture of machine(1) [man]
# cal 2011
show the timetable of 2011 [man]
# cat /proc/cpuinfo
show information CPU info [man]
# cat /proc/interrupts
show interrupts [man]
# cat /proc/meminfo
verify memory use [man]
# cat /proc/swaps
show file(s) swap [man]
# cat /proc/version
show version of the kernel [man]
# cat /proc/net/dev
show network adpters and statistics [man]
# cat /proc/mounts
show mounted file system(s) [man]
# clock -w
save date changes on BIOS [man]
# date
show system date [man]
# date 041217002007.00
set date and time - MonthDayhoursMinutesYear.Seconds [man]
# dmidecode -q
show hardware system components - (SMBIOS / DMI) [man]
# hdparm -i /dev/hda
displays the characteristics of a hard-disk [man]
# hdparm -tT /dev/sda
perform test reading on a hard-disk [man]
# lspci -tv
display PCI devices [man]
# lsusb -tv
show USB devices [man]
# uname -m
show architecture of machine(2) [man]
# uname -r
show used kernel version [man]