psql -X --field-separator ' ' -At -d sachi -f sachi.sql|while read -r f1 f2 f3 f4 f5 f6; do echo "$f3"; done

How do I read a file line by line under UNIX using KSH or BASH shell?
#!/bin/ksh 

#!/bin/bash
## nohup /home/gpadmin/scripts/vacuum.sh > /var/tmp/vacuum_$(date +\%Y\%m\%d_\%H:\%M).log 2>&1 &
export GPHOME=/usr/local/greenplum-db
export MASTER_DATA_DIRECTORY=/data/master/gpseg-1
source $GPHOME/greenplum_path.sh
echo
cat << EOTEXT
************************************************************************
$(date) BEGIN Vacuum of all databases
************************************************************************
EOTEXT
vacuumdb -afx
echo
cat << EOTEXT
************************************************************************
$(date) END Vacuum of all databases
************************************************************************
EOTEXT
echo

How to automatically start sshd (secure shell service) on every system startup on Fedora 16

Fedora 16 is now using systemd. systemd is a system and service manager, it is a replacement for the System V init daemon for Linux. It is intended to provide a better framework for expressing services’ dependencies, allow more work to be done in parallel at system startup, and to reduce shell overhead.

If you want to start sshd manually once, run as root
# systemctl start sshd.service

In order to start it automatically on every system boot, run
# systemctl enable sshd.service

Likewise, you can remove it from system startup
# systemctl disable sshd.service

If you would like to see a list of all available managed services, run
# systemctl -a

ethtool is used for querying settings of an ethernet device and chang- ing them.