feat(database-dump-cleanup): 添加数据库备份文件清理脚本

database-dump-cleanup.sh

@@ -0,0 +1,115 @@
+#!/bin/sh
+set -eu
+
+# Remove dump files with a given prefix while keeping the most recent N days (default 7).
+
+PROG=${0##*/}
+
+usage() {
+  cat <<USAGE
+Usage: $PROG --prefix=NAME [--dir=DIR] [--days=N]
+
+  --prefix=NAME   Filename prefix to match (required).
+  --dir=DIR       Directory to scan (default: current directory).
+  --days=N        Retention window in days (default: 7).
+  --help          Show this help text.
+USAGE
+}
+
+error() {
+  printf '%s: %s\n' "$PROG" "$1" >&2
+}
+
+die_with_usage() {
+  error "$1"
+  usage >&2
+  exit 1
+}
+
+PREFIX=""
+TARGET_DIR="."
+RETENTION_DAYS=7
+
+while [ "$#" -gt 0 ]; do
+  case $1 in
+    --prefix=*)
+      PREFIX="${1#*=}"
+      ;;
+    --prefix)
+      shift
+      [ "$#" -gt 0 ] || die_with_usage 'Missing value for --prefix'
+      PREFIX="$1"
+      ;;
+    --dir=*)
+      TARGET_DIR="${1#*=}"
+      ;;
+    --dir)
+      shift
+      [ "$#" -gt 0 ] || die_with_usage 'Missing value for --dir'
+      TARGET_DIR="$1"
+      ;;
+    --days=*)
+      RETENTION_DAYS="${1#*=}"
+      ;;
+    --days)
+      shift
+      [ "$#" -gt 0 ] || die_with_usage 'Missing value for --days'
+      RETENTION_DAYS="$1"
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    --)
+      shift
+      break
+      ;;
+    -*)
+      die_with_usage "Unknown option: $1"
+      ;;
+    *)
+      if [ -z "$PREFIX" ]; then
+        PREFIX="$1"
+      else
+        die_with_usage "Unexpected positional argument: $1"
+      fi
+      ;;
+  esac
+  shift
+
+done
+
+if [ -z "$PREFIX" ] && [ "$#" -gt 0 ]; then
+  PREFIX="$1"
+  shift
+fi
+
+if [ -z "$PREFIX" ]; then
+  die_with_usage 'A prefix is required.'
+fi
+
+if [ "$#" -gt 0 ]; then
+  die_with_usage "Unexpected positional argument: $1"
+fi
+
+case $RETENTION_DAYS in
+  ''|*[!0-9]*)
+    die_with_usage "Retention days must be a non-negative integer: $RETENTION_DAYS"
+    ;;
+  *)
+    :
+    ;;
+esac
+
+if [ ! -d "$TARGET_DIR" ]; then
+  error "Directory not found: $TARGET_DIR"
+  exit 1
+fi
+
+# find's +N semantics removes files strictly older than N days, leaving the N day window intact.
+find "$TARGET_DIR" \
+  -maxdepth 1 \
+  -type f \
+  -name "${PREFIX}*" \
+  -mtime +"$RETENTION_DAYS" \
+  -print -delete