inotifywait to exec specified command on each file change -> e.g. run "make", "pdflatex", or any other compile/upload or other command of choice! (Thanks https://superuser.com/a/181543/81861 ! )

inotify_exec_on_file_change.sh

#!/bin/bash

# Example usecase:
# inotify_exec_on_file_change.sh /path/phd paper.tex pdflatex paper.tex

dirn="$1"
filen="$2"
shift 2

echo "Watching directory $dirn for changes of file $filen . Watching directory insteaf of file to overcome behaviour of many text editors that replace file - Thanks to Giles and see his answer https://superuser.com/a/181543/81861 for more details. In case of matching even I execute:" $@

#inotifywait -m -e close_write,moved_to,create  "$dirn" |
#inotifywait -m -e close_write  "$dirn" |
#while read -r directory events filename; do
inotifywait -m -e close_write --format '%f'  "$dirn" |
while read -r filename; do
  echo "[inotifywait] "$directory $events $filename
  if [ "$filename" = "$filen" ]; then
    echo "[executing] " "$@"
    "$@"
  else
    echo "[not executing] Due to mismatch in filename. Expected \"$filen\", but received event about \"$filename\""
  fi
done

echo loop reading from inotifywait finished with status $?