Increase number of stored copies

keep_n_backups_for_templates.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+set -e
+
+BACKUP_DIR="../backups"
+
+if [ ! -d "$BACKUP_DIR" ]; then
+  mkdir "$BACKUP_DIR"
+  echo "Folder $BACKUP_DIR created"
+fi
+
+if [ "$#" -ne 2 ]; then
+  echo "Usage: $0 N prefix"
+  exit 1
+fi
+
+N=$1
+PREFIX=$2
+
+FOLDERS=($(find . -maxdepth 1 -type d -name "${PREFIX}*" -printf "%f\n"))
+
+# echo "Finded foldors: ${FOLDERS[@]}"  # дебаг вывод чтобы посмотреть на то, какие папки нашлись по префиксу
+
+copy_folder() {
+  local folder=$1
+  local timestamp=$(date +"%Y_%m_%d_%H_%M")
+  local new_folder_name="${folder}_${timestamp}"
+  echo "Start copy $folder into $BACKUP_DIR/$new_folder_name"
+  cp -r -f "$folder" "$BACKUP_DIR/$new_folder_name"
+  echo "Folder $folder copied into $BACKUP_DIR/$new_folder_name"
+}
+
+for folder in "${FOLDERS[@]}"; do
+  if [ -d "$folder" ]; then
+    copy_folder "$folder"
+  else
+    echo "Folder $folder doesn't exist."
+  fi
+done
+
+clean_old_copies() {
+  local folder=$1
+  local pattern="${folder}_*"
+  local copies=("$BACKUP_DIR"/$pattern)
+  # echo ${copies[@]}   # дебаг вывод чтобы посмотреть на то, как ищутся копии
+
+  if [ ${#copies[@]} -gt $N ]; then
+    local num_to_delete=$(( ${#copies[@]} - N ))
+    for ((i=0; i<num_to_delete; i++)); do
+      echo "Started deleting ${copies[i]}"
+      rm -rf "${copies[i]}"
+      echo "Deleted old copy ${copies[i]}"
+    done
+  fi
+}
+
+for folder in "${FOLDERS[@]}"; do
+  clean_old_copies "$folder"
+done