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.

[jdoe@localhost ~]$ arch

x86_64

[jdoe@localhost ~]$ uname -m

x86_64

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

dmidecode -q: Show the system hardware information.

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

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

cat /proc/cpuinfo: Show CPU information.

cat /proc/interrupts: Show IRQ information.

cat /proc/meminfo: Show Memory status.

cat /proc/swaps: Show swap files.

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

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

lspci -tv: Show PCI devices.

lsusb -tv: Show USB devices.

date: Show the system date.

cal 2014: Show calendar <cal + year>

cal 07 2014: Show month.

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

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>