#!/bin/bash
# Backup script for Gentoo Linux
# Author: Reto Glauser aka blinkeye
# Homepage: http://blinkeye.ch
# Mailto: stage4 at blinkeye dot ch
# Date: 23.03.2005
# If you need further infos check out this post: http://forums.gentoo.org/viewtopic.php?p=1751698#1751698
version=v1.2
# these are the commands we actually need for the backup
command_list="echo tar hostname date split"
# verify that each command we use exists
for command in $command_list; do
path=`which $command | grep "no $command in"`
if [ ! -x `which $command` -a "$path" ]; then
echo -e "\n\nERROR: $command not found! Check your commands and/or your \$PATH"
exit -1
fi
done
# options for the tar command
tarOptions="--create --absolute-names --preserve-permissions --totals --bzip2 --ignore-failed-read --verbose --file"
# where to put the stage4
stage4Location=/mnt/backup/stage4
# name prefix
stage4prefix=$(hostname)-stage4-`date +\%d.\%m.\%Y`
# these files/directories are always excluded
default_exclude_list="
--exclude=/tmp/*
--exclude=/var/tmp/*
--exclude=/lost+found/*
--exclude=/dev/*
--exclude=/proc/*
--exclude=/mnt/*
--exclude=/sys/*
--exclude=/usr/portage/*
--exclude=/var/log/*
--exclude=$stage4Location"
# depending on your choice these files or directories will additionally be excluded
custom_exclude_list="
--exclude=/usr/src/*
--exclude=/opt/mathematica
--exclude=/usr/share/smssend
--exclude=/home/*"
# check the folder/files stored in $default_exclude_list exist
for exclude in $default_exclude_list; do
if [ ! -e "`echo "$exclude" | cut -d'=' -f2 | cut -d'*' -f1`" ]; then
echo -e "\n\nERROR: `echo "$exclude" | cut -d'=' -f2` not found! Check your \$default_exclude_list"
fi
done
# check the folder/files stored in $custom_exclude_list exist
for exclude in $custom_exclude_list; do
if [ ! -e "`echo "$exclude" | cut -d'=' -f2 | cut -d'*' -f1`" ]; then
echo -e "\n\nERROR: `echo "$exclude" | cut -d'=' -f2` not found! Check your \$custom_exclude_list"
fi
done
# print out the version
echo -e "\nBackup script $version"
echo -e "==================="
# how do you want to backup?
echo -e "\nWhat do you want to do? (Use CONTROL-C to abort)\n
(1) Minimal backup
(2) Interactive backup"
while [ "$option" != '1' -a "$option" != '2' ]; do
echo -en "\nPlease enter your option: "
read option
done
case $option in
1)
stage4Name=$stage4Location/$stage4prefix-minimal
final_command="tar $default_exclude_list $custom_exclude_list $tarOptions $stage4Name.tar.bz2 / /var/log/emerge.log"
;;
2)
for folder in $custom_exclude_list; do
echo -en "Do you want to backup" `echo "$folder" | cut -d'=' -f2`"? (y/n) "
read answer
while [ "$answer" != 'y' -a "$answer" != 'n' ]; do
echo "please enter y or n"
read answer
done
if [ "$answer" == 'n' ]; then
default_exclude_list="$default_exclude_list $folder"
fi
done
stage4Name=$stage4Location/$stage4prefix-custom
final_command="tar $default_exclude_list $tarOptions $stage4Name.tar.bz2 / /var/log/emerge.log"
;;
esac
# show what will be done
echo -e "\n* creating the stage4 at $stage4Location with the following options:\n\n"$final_command
# everything is set, are you sure to continue?
echo -ne "\nDo you want to continue? (y/n) "
read answer
while [ "$answer" != 'y' ] && [ "$answer" != 'n' ]; do
echo "please enter y or n"
read answer
done
if [ "$answer" == 'y' ]; then
# mount boot
echo -e "\n* mount boot"
mount /boot >/dev/null 2>&1
# if necessary, create the stage4Location
if [ ! -d "$stage4Location" ] ; then
echo "* creating directory $stage4Location"
mkdir -p $stage4Location
fi
# check whether the file already exists
if [ -a "$stage4Name.tar.bz2" ]; then
echo -en "\nDo you want to overwrite $stage4Name.tar.bz2? (y/n) "
read answer
while [ "$answer" != 'y' ] && [ "$answer" != 'n' ]; do
echo "please enter y or n"
read answer
done
if [ "$answer" == 'n' ]; then
echo -e "\n* There's nothing to do ... Exiting"
exit 0;
fi
fi
# do the backup
time $final_command
# copy the current world file to the stage4 location
echo -e "\n* creating stage4 overview $stage4Name.txt"
cp /var/lib/portage/world $stage4Name.txt >/dev/null 2>&1
# we finished, clean up
echo "* stage4 is done"
echo "* umounting boot"
umount /boot
else
echo -e "\n* There's nothing to do ... Exiting"
fi
#Uncomment the following command if you want to split the archive in cd size chunks:
#split --suffix-length=1 --bytes=670m $stage4Name.tar.bz2 "$stage4Name".tar.bz2_ && echo "* splitting is done"
