Please see the alternate branches gnome-3.0 and gnome-3.2 if you are using an older version of gnome-shell.
It's recommended you install via the Gnome Shell Extensions website. However, before you do so, ensure you have the appropriate system packages installed.
On Ubuntu:
$ sudo apt-get install gir1.2-gtop-2.0 gir1.2-networkmanager-1.0
On Fedora:
$ sudo yum install --assumeyes libgtop2-devel NetworkManager-glib-devel
On openSUSE (Leap 42.1):
$ sudo zypper install gnome-shell-devel libgtop-devel libgtop-2_0-10
Then, visit extensions.gnome.org, preferrably in Firefox, and install by clicking the toggle button next to the extension's name. If the install was success, the toggle button should now show "ON".
If it failed, ensure you installed all the necessary dependencies, and that you granted the browser permission to install extensions when prompted. Additionally, try rebooting gnome-shell (Alt + F2 -> r).
Download and extract the ZIP/Tarball, open a shell into its directory, and run:
make install
Alternately, if you plan on doing development on the extension, or testing modifications, it's advised you checkout the Git repository and install a symlink. First, install git if you don't have it: (sudo apt-get install git-core, sudo pacman -S git, etc), then run:
mkdir ~/git_projects
cd ~/git_projects
git clone git://github.com/paradoxxxzero/gnome-shell-system-monitor-applet.git
mkdir -p ~/.local/share/gnome-shell/extensions
cd ~/.local/share/gnome-shell/extensions
ln -s ~/git_projects/gnome-shell-system-monitor-applet/system-monitor@paradoxxx.zero.gmail.com
gnome-shell-extension-tool --enable-extension=system-monitor@paradoxxx.zero.gmail.com
And restart gnome-shell (Alt + F2 -> r) or reboot.
If we do not have the translation of your language and you want to translate by yourself, please make a fork, add your po/YOUR_LANG/system-monitor-applet.po file, and make a pull request.
To create a zip file with the specified version number, ready to upload to Gnome Shell Extensions or similar repository, run:
make zip-file VERSION=31
paradoxxxzero yuyichao darkxst And many contributors
Copyright (C) 2011 Florian Mounier aka paradoxxxzero
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.