cleanup unnecessary code / print number processed datasets

README.md

@@ -18,17 +18,16 @@ Script to check zfs snapshot counts and age of oldest most recent snapshot. Spec
 
 ## Options
 
-```bash
+- `-d, --dataset <dataset>`: Dataset to check (required; can be repeated for multiple)
--d, --dataset <dataset>         Dataset to check (required, repeat for multiple)
+- `-p, --prefix <prefix>`: Snapshot prefix (default: `zrepl_`)
--e, --exclude <dataset>         Exclude dataset (repeat for multiple)
+- `-f, --format <format>`: Timestamp format (see [below](#timestamp-formats--f))
--p, --prefix <prefix>           Snapshot prefix (default: zrepl_)
+- `-s, --max-snapshots <num>`: Max snapshots per dataset
--f, --format <format>           Timestamp format (see [below](#timestamp-formats--f))
+- `-m, --max-age <duration>`: Max age (e.g., 31s, 17m, 24h)
--s, --max-snapshots <num>       Max snapshots per dataset
+- `-r, --recursive`: Include sub-datasets
--m, --max-age <duration>        Max age (e.g., 31s, 17m, 24h)
+- `-e, --exclude <dataset>`: Exclude dataset (can be repeated for multiple)
--r, --recursive                 Include sub-datasets
+- `-v, --verbose`: Show detailed table
--v, --verbose                   Show detailed table
+- `-n, --err-for-no-snapshots`: Error if no snapshots found
--n, --err-for-no-snapshots      Error if no snapshots found
+- `-h, --help`: Show help message
-```
 
 ## Timestamp Formats (`-f`)
 

checkSnapshots.sh

@@ -17,7 +17,7 @@ ERR_FOR_NO_SNAPSHOTS=false
 FORMAT=""
 
 usage() {
-    echo "Usage: $0 -d|--dataset <dataset> [-d|--dataset <dataset>...] [-p|--prefix <prefix>] [-f|--format <format>] [-m <duration>] [-s|--max-snapshots <num>] [-e|--exclude <dataset>] [-r|--recursive] [-v|--verbose] [-n|--err-for-no-snapshots]"
+    echo "Usage: $0 -d|--dataset <dataset> [-d|--dataset <dataset>...] [-p|--prefix <prefix>] [-f|--format <format>] [-m <duration>] [-s|--max-snapshots <num>] [-e|--exclude <dataset>] [-r|--recursive] [-v|--verbose] [-n|--err-for-no-snapshots] [-h|--help]"
     echo "  -d, --dataset              ZFS dataset to check (can be specified multiple times)"
     echo "  -e, --exclude              Dataset to exclude (can be specified multiple times)"
     echo "  -p, --prefix               Snapshot prefix (default: zrepl_)"
@@ -27,6 +27,7 @@ usage() {
     echo "  -r, --recursive            Include all sub-datasets of specified datasets"
     echo "  -v, --verbose              Print per-dataset snapshot count and age"
     echo "  -n, --err-for-no-snapshots Return error if any dataset has no snapshots"
+    echo "  -h, --help                 Show this help message"
     exit 1
 }
 
@@ -44,20 +45,6 @@ duration_to_seconds() {
     esac
 }
 
-# timestamp_to_epoch() {
-#     # Format: YYYYMMDD_HHMMSS_mmm
-#     local timestamp="$1"
-#     local year="${timestamp:0:4}"
-#     local month="${timestamp:4:2}"
-#     local day="${timestamp:6:2}"
-#     local hour="${timestamp:9:2}"
-#     local minute="${timestamp:11:2}"
-#     local second="${timestamp:13:2}"
-
-#     # Convert to epoch using date command (assuming UTC)
-#     date -u -d "${year}-${month}-${day} ${hour}:${minute}:${second}" +%s 2>/dev/null
-# }
-
 # Format age in seconds to human-readable format
 format_age() {
     local total_seconds="$1"
@@ -356,6 +343,7 @@ if [[ "$VERBOSE" == "true" ]]; then
     echo ""
 fi
 
+echo "Datasets processed: ${#DATASETS_TO_PROCESS[@]}"
 echo "Max snapshots: $MAX_SNAPSHOT_COUNT ($MAX_SNAPSHOT_DATASET)"
 echo "Oldest most recent snapshot age: $TIME_DIFF_FORMATTED ($OLDEST_SNAPSHOT_DATASET)"