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sources/tech/20150126 How To Kill All Processes Of A Specific User With slay.md Normal file
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How To Kill All Processes Of A Specific User With ‘slay’
================================================================================
**slay** written by **Chris Ausbrooks** is a command line tool that can be used to kill all running processes of a specific user. slay will be useful to system administrators who finds out certain users are running process they shouldn’t have.
slay is available in the official repositories of most distros.
To install
### Ubuntu and it’s derivatives ###
sudo apt-get install slay
### Arch Linux and Its derivatives ###
sudo pacman -S slay
### Fedora and its derivatives ###
sudo yum install slay
### Usage ###
You need administrative rights to use slay,
to kill all processes of a specific user all you need is:
sudo slay <usename>
For example; if I want to kill all processes of a user named **amitooo**
~ sudo slay amitooo
slay: Done.
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/slay-amitoo-kpenee.png)
You should see feedback for slay when done slaying.
Enjoy.
--------------------------------------------------------------------------------
via: http://www.unixmen.com/kill-processes-specific-user-slay/
作者：[ Enock Seth Nyamador][a]
译者：[译者ID](https://github.com/译者ID)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
[a]:http://www.unixmen.com/author/seth/

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sources/tech/20150126 Installing Cisco Packet tracer in Linux.md Normal file
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Installing Cisco Packet tracer in Linux
================================================================================
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/Main_picture.png)
### What is Cisco Packet tracer ? ###
**Cisco Packet tracer** is a powerful network simulator tool which used to trained while we do some Cisco certifications. It provide us good Interface view for every router’s, and networking devices which with many options same as using the physical machines we can use unlimited devices in a network. We can create multiple network in single project to get trained like a professionals. packet tracer will provide us with simulated application layer protocols such as **HTTP**, **DNS**, Routing with **RIP**, **OSPF**, **EIGRP** etc.
Now it has been released including **ASA 5505 firewall** with command line configurations. Packet tracer available commonly for Windows, but not for Linux distributions. Here we can download and get install Cisco package tracer.
#### Newly released version of Cisco packet tracer: ####
The next Cisco Packet Tracer version will be Cisco Packet Tracer 6.2 currently it’s under development.
### My Environment Setup: ###
**Hostname** : desktop1.unixmen.com
**IP address** : 192.168.0.167
**Operating system** : Ubuntu 14.04 LTS Desktop
# hostname
# ifconfig | grep inet
# lsb_release -a
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_001.png)
### Step 1: First we need to download the Cisco Packet tracer. ###
To download Packet Tracer from official website we need to have a token, sign into Cisco NetSpace and select CCNA > Cisco Packet Tracer from the Offerings menu to start the download. If we don’t have a token you can get from below link which i have uploaded in Dropbox.
Official Website: [https://www.netacad.com/][1]
Many of them don’t have a token to download packet tracer. For that i have uploaded it in dropbox you can get packet tracer from below URL.
[Download Cisco Packet Tracer 6.1.1][2]
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_002.png)
### Step 2: Install Java: ###
To get install packet tracer we need to have install Java, To get install java we can use the default or add the PPA repository and update the package cache to get install java.
Install the default jre using
# sudo apt-get install default-jre
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_003.png)
(or)
Use the below step to get install Java Run-time and set the Environment.
Download Java from official website : [Download Java][3]
# tar -zxvf jre-8u31-linux-x64.tar.gz
# sudo mkdir -p /usr/lib/jvm
# sudo mv -v jre1.8.0_31 /usr/lib/jvm/
# cd /usr/lib/jvm/
# sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jre1.8.0_31/bin/java" 1
# sudo update-alternatives --set "java" "/usr/lib/jvm/jre1.8.0_31/bin/java"
Set the environment for java by editing the profile file and add the location. While we adding in profile file java will available for every user’s in our machine.
# sudo vi /etc/profile
Add the following entries to the bottom of your /etc/profile file:
export JAVA_HOME=/usr/lib/jvm/jre1.8.0_31
export PATH=$PATH:/usr/java/jre1.8.0_31/bin
Run the below command to activate java path immediately.
# . /etc/profile
Check for the Java version and Environment:
# echo $JAVA_HOME
# java -version
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_004.png)
### Step 3: Enable 32bit architecture support: ###
For Packet tracer we need some of 32bit packages. To get install 32bit packages we need to install some of dependencies using below commands.
# sudo dpkg --add-architecture i386
# sudo apt-get update
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_005.png)
# sudo apt-get install libc6:i386
# sudo apt-get install lib32z1 lib32ncurses5 lib32bz2-1.0
# sudo apt-get install libnss3-1d:i386 libqt4-qt3support:i386 libssl1.0.0:i386 libqtwebkit4:i386 libqt4-scripttools:i386
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_006.png)
### Step 4: Extract and install the package: ###
Extract the downloaded package using tar command.
# mv Cisco\ Packet\ Tracer\ 6.1.1\ Linux.tar.gz\?dl\=0 Cisco_Packet_tracer.tar.gz
# tar -zxvf Cisco_Packet_tracer.tar.gz
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_007.png)
Navigate to the extracted directory
# cd PacketTracer611Student
Now it’s time to start the installation , Installation is very simple and just take few seconds.
# sudo ./install
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_008.png)
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_009.png)
To working with Package tracer we need to set the environment for that Cisco have provided the environment script, We need to run the script using root user to set the environment variable.
# sudo ./set_ptenv.sh
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_010.png)
That’s it for installation step’s. next we need to create a Desktop Icon for Packet tracer.
Create the Desktop Icon by creating desktop file under.
# sudo su
# cd /usr/share/applications
# sudo vim packettracer.desktop
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_011.png)
Append the Below content to the file using vim editor or your favourite one.
[Desktop Entry]
Name= Packettracer
Comment=Networking
GenericName=Cisco Packettracer
Exec=/opt/packettracer/packettracer
Icon=/usr/share/icons/packettracer.jpeg
StartupNotify=true
Terminal=false
Type=Application
Save and quit using wq!
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_012.png)
### Step 5: Run the packet tracer ###
# sudo packettracer
That’s it we have successfully installed the packet tracer in Linux, These above steps are suitable for every debian based Linux distributions.
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_013.png)
![](http://180016988.r.cdn77.net/wp-content/uploads/2015/01/pkt_014.png)
### Resources ###
Home page:[Netacad][4]
### Conclusion: ###
Here we have seen how to install packet tracer in Linux distribution, Hope you have find a way to get install your favorite Simulator in Linux.
--------------------------------------------------------------------------------
via: http://www.unixmen.com/installing-cisco-packet-tracer-linux/
作者：[babin][a]
译者：[译者ID](https://github.com/译者ID)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
[a]:http://www.unixmen.com/author/babin/
[1]:https://www.netacad.com/
[2]:https://www.dropbox.com/s/5evz8gyqqvq3o3v/Cisco%20Packet%20Tracer%206.1.1%20Linux.tar.gz?dl=0
[3]:http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html
[4]:https://www.netacad.com/