When I inserted a new network card into my Linux computer, the new network interface was named with an incremented number at the end. I didn’t want that as my network setup (firewall rules etc.) were set up for the former name. So I had to change the configuration to rename the new interface.
I found the found the configuration file where the names of the network devices are saved using this command:
cd /etc/
ls `sudo find . -type f -print |xargs grep -l -s "eth2"`
So I edited the file:
run netstat like this:
sudo netstat -lntup
and you get an output like this:
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:8000 0.0.0.0:* LISTEN 3688/icecast2
tcp 0 0 0.0.0.0:5552 0.0.0.0:* LISTEN 2955/tprintdaemon
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 2968/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 4087/cupsd
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN 3202/postgres
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 3519/exim4
tcp 0 0 0.0.0.0:7100 0.0.0.0:* LISTEN 3859/xfs
tcp6 0 0 :::139 :::* LISTEN 3776/smbd
tcp6 0 0 :::80 :::* LISTEN 4279/lighttpd
tcp6 0 0 :::22 :::* LISTEN 2968/sshd
tcp6 0 0 :::7100 :::* LISTEN 3859/xfs
tcp6 0 0 :::445 :::* LISTEN 3776/smbd
udp 0 0 141.12.116.210:137 0.0.0.0:* 3772/nmbd
udp 0 0 192.168.102.33:137 0.0.0.0:* 3772/nmbd
udp 0 0 0.0.0.0:137 0.0.0.0:* 3772/nmbd
udp 0 0 141.12.116.210:138 0.0.0.0:* 3772/nmbd
udp 0 0 192.168.100.33:138 0.0.0.0:* 3772/nmbd
udp 0 0 0.0.0.0:138 0.0.0.0:* 3772/nmbd
udp 0 0 0.0.0.0:68 0.0.0.0:* 7082/dhclient
udp 0 0 0.0.0.0:68 0.0.0.0:* 5550/dhclient
udp 0 0 0.0.0.0:50503 0.0.0.0:* 4028/avahi-daemon:
udp 0 0 0.0.0.0:5353 0.0.0.0:* 4028/avahi-daemon:
alternatively do also a reverse DNS lookup:
This article is about the data consistency health of your Raid. To check the physical health of the HDDs please use smartmontools to check the SMART status of your hard drives.
The simplest possibility to find out something about the status is to read the content of the special file /proc/mdstat:
cat /proc/mdstat
The output looks like:
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md1 : active raid1 sdb2[1] sdc2[0]
488022464 blocks [2/2] [UU]
md0 : active raid1 sdb1[1] sdc1[0]
104320 blocks [2/2] [UU]
unused devices: <none>
And for more details you can run
To get my cherry G85 to work properly including the additional audio keys I have to do the following:
To change the channels which your MM keys control, go to your main Gnome menu and find:
Applications → System Tools → Configuration Editor (gconf-editor)
/desktop/gnome/sound/default_mixer_device to alsamixer:hw:0/desktop/gnome/sound/default_mixer_tracks and change it to whatever channels you want.[Master Mono] if you haven’t ever changed it. When set to [Master Mono, Master] the volume keys on the keyboard control both of those channels.For my Nvidia Geforce 8600 GT in order to uninstall the driver I have to run the following command and restart:
sudo aptitude remove nvidia-glx-180
http://deice.daug.net/netcat_speed.html
http://www.linuxhomenetworking.com/forums/showthread.php?t=18736
http://lxer.com/module/forums/t/26336/
good (short!): http://www.odium.com.au/?p=78
listen on machine A:
nc -v -v -l -n -p 2222 >/dev/null
on newer versions of netcat (Ubuntu 10.04) you must use
nc.traditional -v -v -l -n -p 2222 >/dev/null
Send from machine B:
time yes|nc -v -v -n tklaus.selfip.org 2222 >/dev/null
waiting a bit, then hit Ctrl+C and get something like:
real 0m55.098s
user 0m4.579s
sys 0m2.301s
on machine A you see
sent 0, rcvd 355480892
calculate: google tells us that 355480892 bytes / 55.09 seconds in Mbps is: (355 480 892 bytes) / (55.09 seconds) = 49.2304225 Mbps NOTE that the above result was without the -n switch on the server side (machine A).
https://help.ubuntu.com/community/DynamicDNS
http://wiki.ubuntuusers.de/DynDNS-Clients
Install ddclient:
sudo aptitude install ddclient
Now configure the program:
sudo gedit /etc/ddclient.conf
Enter your DynDNS account data and computer setup:
pid=/var/run/ddclient.pid
protocol=dyndns2
use=if, if=eth2 # the mode and network interface
# DynDNS account:
server=members.dyndns.org
login=philippk
password='sdf1dpw'
philippk.ath.cx
And set ddclient to run automatically on startup:
sudo gedit /etc/default/ddclient
Set the mode of ddclient to something like this:
run_ipup="false"
run_daemon="true"
daemon_interval="600" # update interval in seconds
http://freeciv.wikia.com/wiki/Main_Page
Freeciv is an empire-building strategy game inspired by the history of human civilization.
sudo aptitude install freeciv-client-gtk
run using
civclient
tinc is a Virtual Private Network (VPN) daemon that uses tunnelling and encryption to create a secure private network between hosts on the Internet. It runs on many platforms including Linux, FreeBSD, OpenBSD, NetBSD, MacOS/X, Solaris, Windows 2000, XP, Vista and Windows 7.
The installation of tinc on Ubuntu Linux is as simple as:
sudo aptitude install tinc
You might want to have some entertainment while falling asleep…
To shutdown the system in 30 minutes time:
sudo shutdown -P +30
cancel shutdown during that time:
sudo shutdown -c