Shell Programming and Scripting

#!/bin/sh
# Unload the UV Database
# Suspend the database
uv -admin -L
# Validate the database
uv -admin -R
#Sync any cached data back to disk
sync
# What is the script backing up exactly
backup_files="/home /etc /u2 /usr/spool/uv /boot /opt"
# Where is it backing up to
dest="/backup"
# Create a daily variable for the archive filename and add the hostname to it
day=$(date +%A)
hostname=$(hostname -s)
# Find which week of the month 1-4 it is.
day_num=$(date +%d)
if (( $day_num <= 7 )); then
        week_file="$hostname-week1.tgz"
elif (( $day_num > 7 && $day_num <= 14 )); then
        week_file="$hostname-week2.tgz"
elif (( $day_num > 14 && $day_num <= 21 )); then
        week_file="$hostname-week3.tgz"
elif (( $day_num > 21 && $day_num < 32 )); then
        week_file="$hostname-week4.tgz"
fi
# Find if the Month is odd or even.
month_num=$(date +%m)
month=$(expr $month_num % 2)
if [ $month -eq 0 ]; then
        month_file="$hostname-month2.tgz"
else
        month_file="$hostname-month1.tgz"
fi
# Create archive filename.
if [ $day_num == 1 ]; then
        archive_file=$month_file
elif [ $day != "Saturday" ]; then
        archive_file="$hostname-$day.tgz"
else
        archive_file=$week_file
fi
# Print start status message.
echo
echo "Backing up $backup_files to $dest/$archive_file"
date
# Backup the files using tar.
tar czf $dest/$archive_file $backup_files
# Print end status message.
echo
echo "Backup finished"
date
# Long listing of files in $dest to check file sizes.
ls -lh $dest/
# Release the Database
uv -admin -U

uv -admin -R