feat(backup) add backup app

.backup.lst

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+/home/zduno/Code/studia/ZSOP/weather

.gitignore

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+.env

README

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+# ZSOP - zadania domowe
+
+* Patryk
+* Zdunowski
+* 1CG

backup.sh

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+#!/bin/bash
+BACKUP_LIST="$(readlink -e ~/)/.backup.lst"
+
+if [ -n "$BACKUP_LIST" ]
+then
+ touch $BACKUP_LIST
+fi
+
+add() {
+	local add_to_backup=$(readlink -m "$OPTARG")
+	touch $BACKUP_LIST || exit
+
+	if ! grep -Fxq $add_to_backup $BACKUP_LIST
+	then
+	echo $add_to_backup >> $BACKUP_LIST
+	fi
+}
+
+remove() {
+	grep -v $(readlink -m "$OPTARG") $BACKUP_LIST > remove; mv remove $BACKUP_LIST
+	find $BACKUP_LIST -size 0 -delete
+}
+
+backup() {
+	local current_time=`date '+%Y-%m-%d-%H-%M-%S'`
+	local latest_backup_date="$(readlink -e ~/)/.latest_backup_date"
+    local rsync_path="mkdir -p $REMOTE_OR_LOCAL_DEST && rsync" 
+    
+	if [ -n "$1" ] && [ -s "$latest_backup_date" ]
+	then
+	 local latest_backup="$BACKUP_PATH/$(cat $latest_backup_date)"
+	 rsync -Rrtu / --rsync-path="$rsync_path" --compare-dest="$latest_backup" --files-from="$BACKUP_LIST" "$BACKUP_PATH/$current_time"
+    else 
+     rsync -Rrt / --rsync-path="$rsync_path" --files-from="$BACKUP_LIST" "$BACKUP_PATH/$current_time"
+    fi
+     
+    echo "$current_time" > "$latest_backup_date"
+}
+
+do_backup() {
+	if [ -n "$DO_UPDATED_BACKUP" ]
+	then
+	 backup true
+	else
+	 backup
+	fi
+}
+
+help() {
+local AUTHOR=$'Author: \u2605 Patryk Zdunowski\u2605'
+local DESC="Description: Simple script for backup your data."
+local OPTIONS="
+* -a - add new file to defined backup list
+* -r - remove file from defined list
+* -b - send defined files to remote server / local folder
+* -u - update defined files which has differences against latest created backup
+* -h - help
+"
+echo "$AUTHOR"
+echo $DESC
+printf "$OPTIONS"
+
+}
+while getopts "a:r:b:uh" opt; do
+  case $opt in
+    a)
+      add
+      ;;
+    r)
+      remove
+      ;;
+    b)
+      #check if backup path from remote server (bad but only for student project)
+      if [[ $OPTARG == *[:]* ]]
+      then
+       BACKUP_PATH=$OPTARG
+       REMOTE_OR_LOCAL_DEST=$(echo $OPTARG | cut -f2 -d:)
+       
+      else
+       BACKUP_PATH=$(readlink -m "$OPTARG")
+       REMOTE_OR_LOCAL_DEST=$BACKUP_PATH
+       mkdir -p $REMOTE_OR_LOCAL_DEST
+      fi
+      ;;
+    u)
+      DO_UPDATED_BACKUP=true
+      ;;
+    h)
+      SHOW_HELP=true
+      ;;
+  esac
+done
+
+if [ -n "$BACKUP_PATH" ]
+then
+ do_backup 
+fi
+
+if [ -n "$SHOW_HELP" ]
+then
+ help 
+fi