87 lines
2.3 KiB
Bash
Executable File
87 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
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# === Config ===
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BACKUP_NAME="$(hostname)_backup"
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BACKUP_SRC="$HOME/docs $HOME/pics $HOME/code $HOME/dls"
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PASSWORD_ENTRY="misc/backup-archive-password"
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# Known external backup drives (UUID-based mount points)
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BACKUP_DRIVE_PATHS=(
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"/run/media/opal/e1f36c5c-4775-4549-8edc-1fa4d273b82e"
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"/run/media/opal/790e21c0-77d3-4119-ad86-e9a6857fc89d"
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)
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# === Find first mounted backup drive ===
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for path in "${BACKUP_DRIVE_PATHS[@]}"; do
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if [ -d "$path" ] && mountpoint -q "$path"; then
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DRIVE_ROOT="$path"
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break
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fi
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done
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if [ -z "$DRIVE_ROOT" ]; then
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echo "❌ No backup drive found."
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exit 1
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fi
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# === Create backup directory on drive ===
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BACKUP_TARGET_DIR="$DRIVE_ROOT/backups/desktop_backups"
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mkdir -p "$BACKUP_TARGET_DIR"
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# === Create archive directly on the drive ===
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TODAY=$(date +%F)
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ARCHIVE="$BACKUP_TARGET_DIR/${BACKUP_NAME}_${TODAY}.7z"
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PASSWORD=$(gopass show "$PASSWORD_ENTRY")
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if [ -z "$PASSWORD" ]; then
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echo "❌ Failed to get password from gopass"
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exit 1
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fi
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echo "📦 Creating archive directly at $ARCHIVE..."
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7z a -mhe=on -p"$PASSWORD" "$ARCHIVE" $BACKUP_SRC
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if [ $? -ne 0 ]; then
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echo "❌ 7z compression failed"
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exit 1
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fi
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# === Retention policy ===
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echo "🧹 Applying retention policy..."
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BASE="${BACKUP_NAME}_"
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find "$BACKUP_TARGET_DIR" -maxdepth 1 -name "${BASE}*.7z" | while read -r file; do
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fname=$(basename "$file")
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date_part=$(echo "$fname" | sed -E "s/^${BASE}([0-9]{4}-[0-9]{2}-[0-9]{2})\.7z$/\1/")
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if ! date -d "$date_part" >/dev/null 2>&1; then
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echo "⚠️ Skipping unrecognized file: $fname"
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continue
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fi
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day_of_week=$(date -d "$date_part" +%u) # 7 = Sunday
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day_of_month=$(date -d "$date_part" +%d) # 01 = first of month
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month_day=$(date -d "$date_part" +%m-%d) # 01-01 = Jan 1
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age_days=$(( ( $(date +%s) - $(date -d "$date_part" +%s) ) / 86400 ))
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keep=0
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if [ "$month_day" = "01-01" ]; then
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keep=1 # yearly
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elif [ "$day_of_month" = "01" ] && [ "$age_days" -le 180 ]; then
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keep=1 # monthly
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elif [ "$day_of_week" = "7" ] && [ "$age_days" -le 28 ]; then
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keep=1 # weekly
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elif [ "$age_days" -le 3 ]; then
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keep=1 # daily
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fi
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if [ "$keep" -eq 1 ]; then
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echo "📌 Keeping: $fname"
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else
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echo "🗑 Deleting: $fname"
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rm -f "$file"
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fi
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done
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echo "✅ Backup complete."
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