create initial script

backup.sh

@@ -1,106 +1,144 @@
 #!/bin/bash
-# Simple backup with rsync
-# local-mode, tossh-mode, fromssh-mode
 
-SOURCES=(/root /etc /home /boot )
+## General Settings
-TARGET="/home/sterzy/backup"
+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  
 
-# edit or comment with "#"
+## SSH Settings
-#LISTPACKAGES=listdebianpackages        # local-mode and tossh-mode
+TOSSH=""                          # What ssh server stores the backups?
-MONTHROTATE=monthrotate                # use DD instead of YYMMDD
+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
                                   
-RSYNCCONF=(--delete)
-#MOUNTPOINT="/media/daten"               # check local mountpoint
-MAILREC="hi@sterzy.com"
-
-SSHUSER="sterzy"
-#FROMSSH="fromssh-server"
-TOSSH="backup-pi"
-SSHPORT=22
-
-### do not edit ###
 
+## 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"; RM="/bin/rm"
+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"
 
-LOG=$0.log
+function backup () 
+{
   $DATE > $LOG
 
-if [ "${TARGET:${#TARGET}-1:1}" != "/" ]; then
-  TARGET=$TARGET/
-fi
-
   if [ "$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
 
-if [ "$MOUNTPOINT" ]; then
+  # Create folders that don't exist
-  MOUNTED=$($MOUNT | $FGREP "$MOUNTPOINT");
+  if [ -n "$S" ] && [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
-fi
+    $ECHO "$S $TOSSH $MKDIR -p $TARGET$1" >> $LOG  
-
+    $S $TOSSH "$MKDIR -p \"$TARGET\"$1" >> $LOG 2>&1
-if [ -z "$MOUNTPOINT" ] || [ "$MOUNTED" ]; then
+    if [ $? -ne 0 ]; then
-  if [ -z "$MONTHROTATE" ]; then
+      ERROR=1
-    TODAY=$($DATE +%y%m%d)
+    fi  
-  else
+  elif ( [ -n "$S" ] && [ -n "$FROMSSH" ] && [ -z "$TOSSH" ] ) || ( [ -z "$S" ] );  then
-    TODAY=$($DATE +%d)
+    $ECHO "$MKDIR -p $TARGET$1" >> $LOG
-  fi
+    $MKDIR -p "$TARGET"$1 >> $LOG 2>&1 
-
+    if [ $? -ne 0 ]; then
-  if [ "$SSHUSER" ] && [ "$SSHPORT" ]; then
+      ERROR=1
-    S="$SSH -p $SSHPORT -l $SSHUSER";
+    fi 
   fi
 
+  # Backup files
   for SOURCE in "${SOURCES[@]}" 
     do
-      if [ "$S" ] && [ "$FROMSSH" ] && [ -z "$TOSSH" ]; then
+      if [ -n $"S" ] && [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then 
-        $ECHO "$RSYNC -e \"$S\" -avR \"$FROMSSH:$SOURCE\" ${RSYNCCONF[@]} $TARGET$TODAY $INC"  >> $LOG 
+        $ECHO "$RSYNC -e \"$S\" -avR \"$SOURCE\" ${RSYNCCONF[@]} \"$TOSSH:$TARGET$1\" $INC " >> $LOG
-        $RSYNC -e "$S" -avR "$FROMSSH:\"$SOURCE\"" "${RSYNCCONF[@]}" "$TARGET"$TODAY $INC >> $LOG 2>&1 
+        $RSYNC -e "$S" -avR "$SOURCE" "${RSYNCCONF[@]}" "$TOSSH:\"$TARGET\"$1" $INC >> $LOG 2>&1 
         if [ $? -ne 0 ]; then
           ERROR=1
         fi
-      fi 
+      elif [ -n $"S" ] && [ -z "$TOSSH" ] && [ -n "$FROMSSH" ]; then
-      if [ "$S" ]  && [ "$TOSSH" ] && [ -z "$FROMSSH" ]; then
+        $ECHO "$RSYNC -e \"$S\" -avR \"$FROMSSH:$SOURCE\" ${RSYNCCONF[@]} $TARGET$1 $INC"  >> $LOG 
-        $ECHO "$RSYNC -e \"$S\" -avR \"$SOURCE\" ${RSYNCCONF[@]} \"$TOSSH:$TARGET$TODAY\" $INC " >> $LOG
+        $RSYNC -e "$S" -avR "$FROMSSH:\"$SOURCE\"" "${RSYNCCONF[@]}" "$TARGET"$1 $INC >> $LOG 2>&1 
-        $RSYNC -e "$S" -avR "$SOURCE" "${RSYNCCONF[@]}" "$TOSSH:\"$TARGET\"$TODAY" $INC >> $LOG 2>&1 
         if [ $? -ne 0 ]; then
           ERROR=1
         fi
-      fi
+      elif [-z "$S"] && [ -z "$TOSSH" ] && [ -z "$FROMSSh" ]; then
-      if [ -z "$S" ]; then
+        $ECHO "$RSYNC -avR \"$SOURCE\" ${RSYNCCONF[@]} $TARGET$1 $INC"  >> $LOG 
-        $ECHO "$RSYNC -avR \"$SOURCE\" ${RSYNCCONF[@]} $TARGET$TODAY $INC"  >> $LOG 
+        $RSYNC -avR "$SOURCE" "${RSYNCCONF[@]}" "$TARGET"$1 $INC  >> $LOG 2>&1 
-        $RSYNC -avR "$SOURCE" "${RSYNCCONF[@]}" "$TARGET"$TODAY $INC  >> $LOG 2>&1 
         if [ $? -ne 0 ]; then
           ERROR=1
         fi
       fi
   done 
 
-  if [ "$S" ] && [ "$TOSSH" ] && [ -z "$FROMSSH" ]; then
+  # Create a link to the latest backup
-    $ECHO "$SSH -p $SSHPORT -l $SSHUSER $TOSSH $LN -nsf $TARGET$TODAY $TARGET$LAST" >> $LOG  
+  if [ -n "$S" ] && [ -n "$TOSSH" ] && [ -z "$FROMSSH" ]; then
-    $SSH -p $SSHPORT -l $SSHUSER $TOSSH "$LN -nsf \"$TARGET\"$TODAY \"$TARGET\"$LAST" >> $LOG 2>&1
+    $ECHO "$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 [ $? -ne 0 ]; then
       ERROR=1
     fi 
   fi
-  if ( [ "$S" ] && [ "$FROMSSH" ] && [ -z "$TOSSH" ] ) || ( [ -z "$S" ] );  then
+
-    $ECHO "$LN -nsf $TARGET$TODAY $TARGET$LAST" >> $LOG
-    $LN -nsf "$TARGET"$TODAY "$TARGET"$LAST  >> $LOG 2>&1 
-    if [ $? -ne 0 ]; then
-      ERROR=1
-    fi 
-  fi
-else
-  $ECHO "$MOUNTPOINT not mounted" >> $LOG
-  ERROR=1
-fi
   $DATE >> $LOG
-if [ -n "$MAILREC" ]; then
+
-  if [ $ERROR ];then
+  if [ -n MAILADRESS ]; then  
-    $MAIL -s "Error Backup $LOG" $MAILREC < $LOG
+    if [ -n $ERROR ]; then
+      $MAIL -s "[Backup] error occured during backup - $LOG" $MAILADRESS < $LOG
     else
-    $MAIL -s "Backup $LOG" $MAILREC < $LOG
+      $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/$WEEK"
+fi
+
+# Create daily backups
+backup "daily/$DAY-$HOUR"
+
+
+