165 lines
6.6 KiB
Bash
Executable File
165 lines
6.6 KiB
Bash
Executable File
#!/bin/bash
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## Create by Stefan Sterz <hi@sterzy.com> in 2017
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## General Settings
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SOURCES=(/root /etc /home /boot) # What folder should be saved?
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TARGET="/home/sterzy/backup" # Where should they be saved? (absolute path!)
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EXCLUDEFROM="" # What files are supposed to be excluded?
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MAILADRESS="" # To which email adress should the logs be sent?
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LISTPACKAGES="" # Change to non empty string to save a list of
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# installed packages!
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LOG=$0.log # Log file name & location
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RSYNCCONF=(--delete) # Additional rsync flags
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## SSH Settings
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TOSSH="" # What ssh server stores the backups?
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FROMSSH="" # From what ssh server should the files be
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# backuped?
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# For several reasons TOSSH and FROMSSH cannot
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# be used at the same time!
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TOSSHUSER="" # The ssh user of the system on which the
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# backup will be created
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TOSSHPORT=22 # The ssh port of the system on which the
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# backup will be created
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FROMSSHUSER="" # The ssh user of the system from which the
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# files will be backed up
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FROMSSHPORT=22 # The ssh port of the system from which the
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# files will be backed up
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WEEKS=5 # For how many weeks shall we save backups?
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## Command variables,
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# These should be fine, but if something doesn't work these can be adjusted
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MOUNT="/bin/mount"; FGREP="/bin/fgrep"; SSH="/usr/bin/ssh"; EXPR="/usr/bin/expr"
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LN="/bin/ln"; ECHO="/bin/echo"; DATE="/bin/date"; MKDIR="/bin/mkdir"
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DPKG="/usr/bin/dpkg"; AWK="/usr/bin/awk"; MAIL="/usr/bin/mail"
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CUT="/usr/bin/cut"; TR="/usr/bin/tr"; RSYNC="/usr/bin/rsync"
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## Helpers
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LAST="last"; INC="--link-dest=$TARGET/$LAST"
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# Format log information
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function formatLog ()
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{
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while IFS= read -r line; do
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printf "$($DATE):\t$line\n"
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done
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}
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# Backup function
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# Creates a backup of the folders provides by $SOURCES in $TARGET in the sub
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# directory provided by the first parameter ($1)
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function backup ()
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{
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$ECHO "Creating backup in \"$TOSSH:$TARGET$1\"..." 2>&1 | formatLog >> $LOG
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if [ -n "$LISTPACKAGES" ] && [ -z "$FROMSSH" ]; then
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$ECHO "$DPKG --get-selections | $AWK '!/deinstall|purge|hold/'|$CUT -f1 | $TR 'n' ' '" 2>&1 | formatLog >> $LOG
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$DPKG --get-selections | $AWK '!/deinstall|purge|hold/'|$CUT -f1 |$TR '\n' ' ' >> $LOG 2>&1
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fi
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# Create folders that don't exist
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if [ -n "$S" ] && [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
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$ECHO "$S $TOSSH $MKDIR -p $TARGET$1" 2>&1 | formatLog >> $LOG
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$S $TOSSH "$MKDIR -p \"$TARGET\"$1" 2>&1 | formatLog >> $LOG 2>&1
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if [ $? -ne 0 ]; then
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ERROR=1
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fi
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elif ( [ -n "$S" ] && [ -n "$FROMSSH" ] && [ -z "$TOSSH" ] ) || ( [ -z "$S" ] ); then
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$ECHO "$MKDIR -p $TARGET$1" 2>&1 | formatLog >> $LOG
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$MKDIR -p "$TARGET"$1 2>&1 | formatLog >> $LOG 2>&1
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if [ $? -ne 0 ]; then
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ERROR=1
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fi
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fi
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# Backup files
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for SOURCE in "${SOURCES[@]}"
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do
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if [ -n "$S" ] && [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
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$ECHO "$RSYNC -e \"$S\" -avR \"$SOURCE\" ${RSYNCCONF[@]} \"$TOSSH:$TARGET$1\" $INC --exclude-from=\"$EXCLUDEFROM\"" 2>&1 | formatLog >> $LOG
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$RSYNC -e "$S" -avR "$SOURCE" "${RSYNCCONF[@]}" "$TOSSH:\"$TARGET\"$1" $INC --exclude-from="$EXCLUDEFROM" 2>&1 | formatLog >> $LOG 2>&1
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if [ $? -ne 0 ]; then
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ERROR=1
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fi
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elif [ -n "$S" ] && [ -z "$TOSSH" ] && [ -n "$FROMSSH" ]; then
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$ECHO "$RSYNC -e \"$S\" -avR \"$FROMSSH:$SOURCE\" ${RSYNCCONF[@]} $TARGET$1 $INC --exclude-from=\"$EXCLUDEFROM\"" 2>&1 | formatLog >> $LOG
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$RSYNC -e "$S" -avR "$FROMSSH:\"$SOURCE\"" "${RSYNCCONF[@]}" "$TARGET"$1 $INC --exclude-from="$EXCLUDEFROM" 2>&1 | formatLog >> $LOG 2>&1
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if [ $? -ne 0 ]; then
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ERROR=1
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fi
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elif [-z "$S"] && [ -z "$TOSSH" ] && [ -z "$FROMSSh" ]; then
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$ECHO "$RSYNC -avR \"$SOURCE\" ${RSYNCCONF[@]} $TARGET$1 $INC --exclude-from=\"$EXCLUDEFROM\"" 2>&1 | formatLog >> $LOG
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$RSYNC -avR "$SOURCE" "${RSYNCCONF[@]}" "$TARGET"$1 $INC --exclude-from="$EXCLUDEFROM" 2>&1 | formatLog >> $LOG 2>&1
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if [ $? -ne 0 ]; then
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ERROR=1
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fi
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fi
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done
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# Create a link to the latest backup
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if [ -n "$S" ] && [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
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$ECHO "$S $TOSSH $LN -nsf $TARGET$1 $TARGET$LAST" 2>&1 | formatLog >> $LOG
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$S $TOSSH "$LN -nsf \"$TARGET\"$1 \"$TARGET\"$LAST" 2>&1 | formatLog >> $LOG 2>&1
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if [ $? -ne 0 ]; then
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ERROR=1
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fi
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elif ( [ -n "$S" ] && [ -n "$FROMSSH" ] && [ -z "$TOSSH" ] ) || ( [ -z "$S" ] ); then
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$ECHO "$LN -nsf $TARGET$1 $TARGET$LAST" 2>&1 | formatLog >> $LOG
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$LN -nsf "$TARGET"$1 "$TARGET"$LAST 2>&1 | formatLog >> $LOG 2>&1
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if [ $? -ne 0 ]; then
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ERROR=1
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fi
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fi
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$ECHO "Done creating backup in \"$TOSSH:$TARGET$1\"" 2>&1 | formatLog >> $LOG
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}
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# Clear log
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$ECHO -n "" > $LOG
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# Make sure the provided path is absolute
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if [ "${TARGET:${#TARGET}-1:1}" != "/" ]; then
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TARGET=$TARGET/
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fi
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# Handle SSH info
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if [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
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S="$SSH -p $TOSSHPORT -l $TOSSHUSER"
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elif [ -z "$TOSSH" ] && [ -n "$FROMSSH" ]; then
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S="$SSH -p $FROMSSHPORT -l $FROMSSHUSER"
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elif [ -n "$TOSSH" ] && [ -n "$FROMSSH" ]; then
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ERROR=1
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$ECHO "Plese don't provide to and from ssh information!" 2>&1 | formatLog >> $LOG
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$ECHO "No backup performed!" 2>&1 | formatLog >> $LOG
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exit 1
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fi
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# Get date etc.
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WEEKDAY=$($DATE +"%u") # %a = weekday as number
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DAY=$($DATE +"%d") # %d = day in month as number
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MONTH=$($DATE +%m) # %m = month as number
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HOUR=$($DATE +"%H") # %H = hour as number
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WEEK=$($EXPR $($DATE +"%W") % $WEEKS) # %W = week as number, used to save backups for the past $WEEKS weeks
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# Create a backup every first day in a month
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if [[ $DAY = 01 ]]; then
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backup "monthly/$MONTH-$($DATE +"%B")"
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fi
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# Create a special backup approx every week
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if [[ $WEEKDAY = 7 ]]; then
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backup "weekly/$WEEK"
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fi
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# Create daily backups
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backup "daily/$WEEKDAY-$($DATE +"%A")/$HOUR"
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# Send email if an adress was provided
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if [ -n "$MAILADRESS" ]; then
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if [ $ERROR ]; then
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$MAIL -s "[Backup] error occured during backup - $LOG" $MAILADRESS < $LOG
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else
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$MAIL -s "[Backup] backup created successfully - $LOG" $MAILADRESS < $LOG
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fi
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fi
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