How to monitor the services in Ubuntu 14.10

To oversee ubuntu linux background daemons, following command is fruitful:
sudo initctl list

There is a detailed explanation for this init control tool in here 

Ruby Quick Reference

When hacking Ruby on Rails, Some strange code stick in my mind. Therefore, while searching good guide, I found this useful Ruby reference.

Ubuntu 14.10 MATE nm-applet appearing problem

When you install a new Ubuntu 14.10 MATE, you couldn't see network manager applet in your top panel. To be enable it, you should edit /etc/xdg/autostart/nm-applet.desktop
[Desktop Entry]
Name=Network
Comment=Manage your network connections
Icon=nm-device-wireless
Exec=nm-applet
Terminal=false
Type=Application
NoDisplay=true
NotShowIn=KDE;
X-GNOME-Bugzilla-Bugzilla=GNOME
X-GNOME-Bugzilla-Product=NetworkManager
X-GNOME-Bugzilla-Component=nm-applet
X-GNOME-UsesNotifications=true
#AutostartCondition=GNOME3 unless-session gnome <---Comment out

X-Ubuntu-Gettext-Domain=nm-applet

Furthermore, if you run below instructions in your terminal, you will enable nm-applet every log in.

mkdir -v ~/.config/autostart

cp /etc/xdg/autostart/nm-applet.desktop ~/.config/autostart

How to set/unset git proxy

To set proxy server with git:

http_proxy=http://$server_ip:$server_port/
git config --global http.proxy $http_proxy

To unset proxy server with git:

git config --global --unset $http_proxy