Perl Assignment #10: File Tests

CS 447/647

Spring, 2012

Due: 4/10/12

Read chapter 12 of Learning Perl. Do exercises 1 and 2.

Submit your assign10.txt and handson10.txt via Web Campus.

Hands-On Exercise

Hands-on is on the other side

Setup NFS – for reference see: https://help.ubuntu.com/community/NFSv4Howto

Sudo bash

apt-get install nfs-kernel-server

mkdir -p /export/home

mount --bind /home /export/home

cp /etc/fstab /etc/fstab.save

# Make sure you use >> so you don't overwrite /etc/fstab

echo "/home /export/home none bind 0 0" >> /etc/fstab

# Make the following change to nfs-kernel-server

vim /etc/default/nfs-kernel-server

NEED_SVCGSSD=no # no is default

# Make the following changes to nfs-common

vim /etc/default/nfs-common

NEED_IDMAPD=yes

NEED_GSSD=no # no is default

cp /etc/exports /etc/exports.save

# Make sure you use >> so you don't overwrite /etc/exports

# If you install from offcampus you need to change the network

# numbers below to match what you have at home

cat >> /etc/exports <<EOF

/export 134.197.34.0/24(rw,fsid=0,insecure,no_subtree_check,async)

/export/home 134.197.34.0/24(rw,nohide,insecure,no_subtree_check,async)

EOF

reboot

sudo bash

mkdir /nfshome

# Substitute your hostname or IP for cselabX in these commands

mount -t nfs4 -o proto=tcp,port=2049 cselabX:/ /nfshome

ls -l /nfshome

# Make the mount permanent in fstab

echo "cselabX:/home /nfshome nfs4 _netdev,auto 0 0" >> /etc/fstab

Setup Autofs – For reference see: https://help.ubuntu.com/community/Autofs

apt-get install autofs

cp /etc/auto.master /etc/auto.master.save

echo "/nfs /etc/auto.nfs" >> /etc/auto.master

echo "cselabX -fstype=nfs4 cselabX:/home" >> /etc/auto.nfs

# Restart Autofs so changes will take effect

service autofs stop

service autofs start

ls -l /nfs/cselabX

script handson10.txt

PS1='$ '

tail /etc/exports /etc/fstab /etc/auto.master /etc/auto.nfs

df -h |grep home

exit