Install Arachni on Kali Linux

install-arachni-on-kali.sh

#! /bin/bash
######
# TO DOWNLOAD THIS SCRIPT SIMPLY TYPE:
# wget bit.ly/kali-arachni
######

#arachni will be installed in $targetInstallationDirectory/$targetDirectoryName
targetInstallationDirectory="$HOME/soft"
targetDirectoryName=arachni

#--- try not to modify anything below this line---

echoAndExit() {
   echo "$1"
   exit -1;
}

mkdir -p $targetInstallationDirectory
cd $targetInstallationDirectory
if [ -d arachni ]; then
   echoAndExit "It seems that folder with arachni already exists under $targetInstallationDirectory. Exiting..."
fi

# get url to the latest arachni release through github api
arachniTarUrl=$(curl -s https://api.github.com/repos/Arachni/arachni/releases/latest | tr ',' '\n' | grep browser_download_url | grep 'linux-x86_64.tar.gz\"' | cut -d\" -f4)

if [[ ! $arachniTarUrl =~ ^https://.*\.tar\.gz$ ]]; then
   echoAndExit "Could not obtain arachni download link. This could indicate a problem with your internet connection. Or Github API miay have changed. Exiting..."
fi

mkdir arachni
fileName="${arachniTarUrl##*/}"  #exctract file name from download url
echo "Downloading Arachni from Github: $arachniTarUrl"
curl -L $arachniTarUrl -o $fileName
tar -xf $fileName -C ./"$targetDirectoryName" --strip-components 1

echo "Done. Arachni executables are located under $targetInstallationDirectory/$targetDirectoryName/bin"

# on fresh kali linux ssh is not enabled and even if it was, the root user cannot ssh so it's better to add a new user
read -p "Do you want to add arachni-scanner user to the system? (y/n) " -r
if [[ $REPLY =~ ^[Yy]$ ]]
then
    adduser arachni-scanner
fi

read -p "Do you want to enable ssh? (y/n) " -r
if [[ $REPLY =~ ^[Yy]$ ]]
then
   systemctl enable ssh
   service ssh start
fi