I would like to run the number of modify option in the monitored directory and when 3 modify event happened. I would like to run an command.
I have tried the code as shown below, however count variable is not increasing even though modification event happened.
#!/bin/bash
count=0
while :
do
{ inotifywait -m -q -e modify /home/testDir& let count="$count + 1"; } || exit 1
if [ "$count" -eq "3" ]; then
#Do something
count=-250
fi
done
There several issues with your script and the inotify use:
inotifywait -m -q -e modify:
-m: monitor without exiting, so it will never exit, and never print-out anything
-q: will not print-out anything
-e: the modify event does not apply to directories but to files within it
{ inotifywait -m -q -e modify /home/testDir& let count="$count + 1"; } || exit 1
will launch inotifywait in the background, immediately add 1 to count and continue
let count="$count + 1: Is very obsolete. use count=$((count + 1)) instead.
A fixed version:
#!/usr/bin/env sh
count=0
while :; do
{
inotifywait -qe 'modify' /home/lea/t/testDir || exit 1
} >/dev/null 2>&1
count=$((count + 1))
if [ "$count" -eq "3" ]; then
echo 'Do something'
count=-250
fi
done
The issue is in the let statement. You can replace it with:
let "count=count+1";
This answer can also be useful
