moving some aliases into dedicated scripts

home/bin/executable_reldate

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+if [[ -z "$1" ]]; then
+    cat << EOF
+reldate - Format or adjust dates
+
+Usage: reldate <date|adjustment>
+
+Examples:
+  reldate "2025-12-12"    # Output: 2025-12-12
+  reldate "+1d"           # Output: tomorrow's date
+  reldate "-1w"           # Output: date 1 week ago
+  reldate "+2m"           # Output: date 2 months from now
+  reldate "-1y"           # Output: date 1 year ago
+
+Adjustments:
+  d = days, w = weeks, m = months, y = years
+  Use + for future, - for past
+
+EOF
+    exit 1
+fi
+
+if [[ "$1" =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2}$ ]]; then
+    date -j -f "%Y-%m-%d" "$1" "+%Y-%m-%d" 2>/dev/null || echo "Invalid date: $1"
+else
+    date -v "$1" "+%Y-%m-%d"
+fi