Demo of chroot and jail in FreeBSD

23Feb2017-sf-micro-meetup-demo.sh

############################
#      chroot demo         #
############################

pwd # outside container

mkdir newroot
mkdir -p newroot/{bin,dev,lib,libexec,sbin}

# copy bins
cp -v /bin/{sh,ls,ps,sleep} newroot/bin
cp -v /sbin/{ifconfig} newroot/sbin

# copy ldds
cp -v /libexec/ld-elf.so.1 newroot/libexec
cp -v /lib/{libedit.so.7,libc.so.7,libncursesw.so.8} newroot/lib
cp -v /lib/{libxo.so.0,libutil.so.9} newroot/lib
cp -v /lib/{libm.so.5,libkvm.so.7,libelf.so.2} newroot/lib
cp -v /lib/{lib80211.so.1,libjail.so.1,libsbuf.so.6,libbsdxml.so.4} newroot/lib

sudo chroot newroot/ /bin/sh

pwd # inside container


############################
#        jail demo         #
############################

# make and copy dirs
mkdir jail1 jail2
cp -r newroot/* jail1/
cp -r newroot/* jail2/


# create jail using command line args
sudo jail -c path=/home/vagrant/jail1 mount.devfs interface=em0 ip4.addr=10.0.2.16 allow.raw_sockets=1 command=/bin/sh
sudo jail -c path=/home/vagrant/jail2 mount.devfs interface=em0 ip4.addr=10.0.2.17 allow.raw_sockets=1 command=/bin/sh

# view processes with Jail ID (jid) etc
ps -axo uid,pid,jid,args

############################
#     demo commands        #
############################
pwd
ls -l
echo "hello world"
sleep 10
id -u $USER 
ps
ping 
ifconfig

What is this repository for or does it work for?