check inotify usage

check_inotify.sh

#!/bin/bash

total_watches=0
total_instances=0

for pid in $(ls /proc | grep -E "^[0-9]+$"); do
    for fd in $(ls /proc/$pid/fd 2>/dev/null); do
        link=$(readlink /proc/$pid/fd/$fd 2>/dev/null)
        if [[ "$link" == "anon_inode:inotify" ]]; then
            total_instances=$((total_instances + 1))
            # Count lines starting with "inotify" in fdinfo
            count=$(grep "^inotify" /proc/$pid/fdinfo/$fd 2>/dev/null | wc -l)
            total_watches=$((total_watches + count))
        fi
    done
done

limit=$(cat /proc/sys/fs/inotify/max_user_watches)
percent=$(echo "scale=4; $total_watches * 100 / $limit" | bc)

echo "Total watches: $total_watches"
echo "Watch limit: $limit"
echo "Usage percent: $percent%"
echo "Total instances: $total_instances"