LinuxCommands

Overview

This article describes several linux user space commands that can be useful for doing several tasks

System Information

1. arch: Show the machine arch.
2. uname -m: Show machine arch.

<tt>[jdoe@localhost ~]$ arch</tt>

<tt>x86_64</tt>

<tt>[jdoe@localhost ~]$ uname -m</tt>

<tt>x86_64</tt>

1. uname -r: Show the kernel version.
2. cat /proc/version: Show kernel version (extra information).

[jdoe@localhost ~]$ uname -r

3.11.10-301.fc20.x86_64

[jdoe@localhost ~]$ cat /proc/version 

Linux version 3.11.10-301.fc20.x86_64 (mockbuild@bkernel01.phx2.fedoraproject.org) (gcc version 4.8.2 20131017 (Red Hat 4.8.2-1) (GCC) ) #1 SMP Thu Dec 5 14:01:17 UTC 2013

1. '''dmidecode -q''': Show the system hardware information.

2. '''hdparm -i /dev/hda''': Show harddisk information.

3. '''hdparm -tT /dev/sda''': Do a read test.

4. '''cat /proc/cpuinfo''': Show CPU information.

5. '''cat /proc/interrupts''': Show IRQ information.

6. '''cat /proc/meminfo''': Show Memory status.

7. '''cat /proc/swaps''': Show swap files.

8. '''cat /proc/net/dev''': Show Network adapters and statistics.

9. '''cat /proc/mounts''': Show mounted volumes in the system.

10. '''lspci -tv''': Show PCI devices.

11. '''lsusb -tv''': Show USB devices.

12. '''date''': Show the system date.

13. '''cal 2014''': Show calendar <cal + year>

14. '''cal 07 2014''': Show month.

15. '''date 041217002011.00''': set date (set, adjust) date y hour.

16. '''clock -w''': Save date changes in BIOS.

<tt>[jdoe@localhost ~]$ arch</tt> <tt>x86_64</tt> <tt>[jdoe@localhost ~]$ uname -m</tt> <tt>x86_64 </tt>