20 LINUX Commands for System Information

System information

1. arch: show the architecture of the machine (1).
2. uname -m: show the architecture of the machine (2).
3. uname -r: show the version of the kernel used.
4. dmidecode -q: show the components (hardware) of the system.
5. hdparm -i / dev / hda: show the characteristics of a hard disk.
6. hdparm -tT / dev / sda: perform read test on a hard disk.
7. cat / proc / cpuinfo: show CPU information.
8. cat / proc / interrupts: show interruptions.
9. cat / proc / meminfo: check memory usage.
10. cat / proc / swaps: show swap files.
11. cat / proc / version: show the kernel version.
12. cat / proc / net / dev: show network adapters and statistics.
13. cat / proc / mounts: show mounted filesystem.
14. lspci -tv: show PCI devices.
15. lsusb -tv: show USB devices.
16. date: show the system date.
17. cal 2011: show the 2011 almanac.
18. cal 07 2011: show the almanac for the month July 2011.
19. date 041217002011.00: set (declare, set) date and time.
20. clock -w: save date changes in BIOS.