backup/backup.sh

144 lines
5 KiB
Bash

#!/bin/bash
## General Settings
SOURCES=(/root /etc /home /boot) # What folder should be saved?
TARGET="/home/sterzy/backup" # Where should they be saved? (absolute path!)
EXCLUDEFROM="" # What files are supposed to be excluded?
MAILADRESS="" # To which email adress should the logs be sent?
LISTPACKAGES="" # Change to non empty string to save a list of
# installed packages!
LOG=$0.log # Log file name & location
RSYNCCONF=(--delete) # Additional rsync flags
## SSH Settings
TOSSH="" # What ssh server stores the backups?
FROMSSH="" # From what ssh server should the files be
# backuped?
# For several reasons TOSSH and FROMSSH cannot
# be used at the same time!
TOSSHUSER="" # The ssh user
TOSSHPORT=22 # The ssh port
FROMSSHUSER="" # The ssh user
FROMSSHPORT=22 # The ssh port
## Command variables,
# These should be fine, but if something doesn't work these can be adjusted
MOUNT="/bin/mount"; FGREP="/bin/fgrep"; SSH="/usr/bin/ssh"
LN="/bin/ln"; ECHO="/bin/echo"; DATE="/bin/date"; MKDIR="/bin/mkdir"
DPKG="/usr/bin/dpkg"; AWK="/usr/bin/awk"; MAIL="/usr/bin/mail"
CUT="/usr/bin/cut"; TR="/usr/bin/tr"; RSYNC="/usr/bin/rsync"
## Helpers
LAST="last"; INC="--link-dest=$TARGET/$LAST"
function backup ()
{
$DATE > $LOG
if [ "$LISTPACKAGES" ] && [ -z "$FROMSSH" ]; then
$ECHO "$DPKG --get-selections | $AWK '!/deinstall|purge|hold/'|$CUT -f1 | $TR '\n' ' '" >> $LOG
$DPKG --get-selections | $AWK '!/deinstall|purge|hold/'|$CUT -f1 |$TR '\n' ' ' >> $LOG 2>&1
fi
# Create folders that don't exist
if [ -n "$S" ] && [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
$ECHO "$S $TOSSH $MKDIR -p $TARGET$1" >> $LOG
$S $TOSSH "$MKDIR -p \"$TARGET\"$1" >> $LOG 2>&1
if [ $? -ne 0 ]; then
ERROR=1
fi
elif ( [ -n "$S" ] && [ -n "$FROMSSH" ] && [ -z "$TOSSH" ] ) || ( [ -z "$S" ] ); then
$ECHO "$MKDIR -p $TARGET$1" >> $LOG
$MKDIR -p "$TARGET"$1 >> $LOG 2>&1
if [ $? -ne 0 ]; then
ERROR=1
fi
fi
# Backup files
for SOURCE in "${SOURCES[@]}"
do
if [ -n $"S" ] && [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
$ECHO "$RSYNC -e \"$S\" -avR \"$SOURCE\" ${RSYNCCONF[@]} \"$TOSSH:$TARGET$1\" $INC " >> $LOG
$RSYNC -e "$S" -avR "$SOURCE" "${RSYNCCONF[@]}" "$TOSSH:\"$TARGET\"$1" $INC >> $LOG 2>&1
if [ $? -ne 0 ]; then
ERROR=1
fi
elif [ -n $"S" ] && [ -z "$TOSSH" ] && [ -n "$FROMSSH" ]; then
$ECHO "$RSYNC -e \"$S\" -avR \"$FROMSSH:$SOURCE\" ${RSYNCCONF[@]} $TARGET$1 $INC" >> $LOG
$RSYNC -e "$S" -avR "$FROMSSH:\"$SOURCE\"" "${RSYNCCONF[@]}" "$TARGET"$1 $INC >> $LOG 2>&1
if [ $? -ne 0 ]; then
ERROR=1
fi
elif [-z "$S"] && [ -z "$TOSSH" ] && [ -z "$FROMSSh" ]; then
$ECHO "$RSYNC -avR \"$SOURCE\" ${RSYNCCONF[@]} $TARGET$1 $INC" >> $LOG
$RSYNC -avR "$SOURCE" "${RSYNCCONF[@]}" "$TARGET"$1 $INC >> $LOG 2>&1
if [ $? -ne 0 ]; then
ERROR=1
fi
fi
done
# Create a link to the latest backup
if [ -n "$S" ] && [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
$ECHO "$S $TOSSH $LN -nsf $TARGET$1 $TARGET$LAST" >> $LOG
$S $TOSSH "$LN -nsf \"$TARGET\"$1 \"$TARGET\"$LAST" >> $LOG 2>&1
if [ $? -ne 0 ]; then
ERROR=1
fi
elif ( [ -n "$S" ] && [ -n "$FROMSSH" ] && [ -z "$TOSSH" ] ) || ( [ -z "$S" ] ); then
$ECHO "$LN -nsf $TARGET$1 $TARGET$LAST" >> $LOG
$LN -nsf "$TARGET"$1 "$TARGET"$LAST >> $LOG 2>&1
if [ $? -ne 0 ]; then
ERROR=1
fi
fi
$DATE >> $LOG
if [ -n MAILADRESS ]; then
if [ -n $ERROR ]; then
$MAIL -s "[Backup] error occured during backup - $LOG" $MAILADRESS < $LOG
else
$MAIL -s "[Backup] backup created successfully - $LOG" $MAILADRESS < $LOG
fi
fi
}
if [ "${TARGET:${#TARGET}-1:1}" != "/" ]; then
TARGET=$TARGET/
fi
if [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
S="$SSH -p $TOSSHPORT -l $TOSSHUSER"
elif [ -z "$TOSSH" ] && [ -n "$FROMSSH" ]; then
S="$SSH -p $FROMSSHPORT -l $FROMSSHUSER"
elif [ -n "$TOSSH" ] && [ -n "$FROMSSH" ]; then
ERROR=1
$ECHO "Plese don't provide to and from ssh information!" >> $LOG
$ECHO "No backup performed!" >> $LOG
fi
# Get date etc.
WEEKDAY=$($DATE +"%u") # %a = weekday as number
DAY=$($DATE +"%d") # %d = day in month as number
MONTH=$($DATE +%m) # %m = month as number
HOUR=$($DATE +"%H") # %H = hour as number
# Create a backup every first day in a month
if [[ $DAY = 1 ]]; then
backup "monthly/$MONTH"
fi
# Create a special backup approx every week
if [[ $WEEKDAY = 7 ]]; then
let WEEK=($DAY+6)/7
backup "weekly/$WEEK"
fi
# Create daily backups
backup "daily/$($DATE +"%A")/$HOUR"