#!/usr/bin/env bash

<< simpleif

#which docker && { echo "Docker is intalled on this host" ; echo "The docker version is: $(docker -v)" ; }

if which docker 2>/dev/null 1>/dev/null

then

echo "Docker is intalled on this host"

echo "The docker version is: $(docker -v)"

fi

which docker 2>&1 1>/dev/null

if [[ $? -eq 0 ]]

then

echo "Docker is intalled on this host"

echo "The docker version is: $(docker -v)"

fi

if true

then

echo "Always this will execute"

fi

if false

then

echo "It wont execute"

fi

simpleif

#which apache2 2>&1 1>/dev/null && { echo "Apache is installed" ; echo "apache versin info is: $(apache2 -v)" ; } || echo "apache is not installed"

if which apache2 2>&1 1>/dev/null

then

echo "Apache is installed"

echo "apache versin info is: $(apache2 -v)"

else

echo "apache is not installed"

fi