Script to set up IBM PDP AIX machines

setuppdp.sh

#!/bin/sh
#
# Note: On AIX, /bin/sh is Korn Shell. Don't use Bashisms here!

# Partitions are too small to be useful. Expand them.
chfs -a size=+2000000 /usr
chfs -a size=+2000000 /opt
chfs -a size=+2000000 /home
chfs -a size=+2000000 /var
chfs -a size=+2000000 /tmp

# Limits are too low for comfort. Increase them.
# REMEMBER TO REBOOT THE LPAR AFTER MAKING THESE CHANGES OTHERWISE THEY WON'T TAKE EFFECT!
chsec -f /etc/security/limits -s default -a "rss=-1"
chsec -f /etc/security/limits -s default -a "nofiles=50000"
chsec -f /etc/security/limits -s default -a "data=-1"
chsec -f /etc/security/limits -s default -a "stack=-1"

# Installing sudo is handy; that way you don't need to be root all the time.
rpm -i ftp://ftp.software.ibm.com/aix/freeSoftware/aixtoolbox/RPMS/ppc/sudo/sudo-1.6.9p23-2noldap.aix5.3.ppc.rpm

# Let anyone in the staff group (namely, your user ID) run anything as root.
echo '%staff    ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers

# Remove security.pkcs11 otherwise SSH negotiation may fail
installp -u security.pkcs11