Double execution of a task in Gulp 4, what's the trouble?

Question

linux

When a task is executed, all rules are triggered, when files are changed, watch fixes everything, but sometimes tasks are performed twice. For example, if you change the SASS file after starting the default task, then it can be executed twice. What can be the problem?

gulp.task('code', function() {
  return gulp.src(source+'/*.html')
    .pipe(browserSync.reload({stream: true}))
});

gulp.task('styles', function(){
  return gulp.src(source+'/'+syntax+'/**/*.'+syntax)
    .pipe(sass({ outputStyle: 'expanded' }).on("error", notify.onError()))
    .pipe(autoprefixer(['last 15 versions']))
    .pipe(cleancss({ level: { 1: { specialComments: 'all' } } }))
    .pipe(rename({ prefix: '', suffix: '.min' }))
    .pipe(gulp.dest(source+'/css'))
    .pipe(browserSync.reload({stream: true}))
});

gulp.task('scripts', function() {
  return gulp.src(source+'/js/**/*.js')
    .pipe(concat('scripts.js'))
    .pipe(uglify())
    .pipe(rename({prefix: '', suffix: '.min'}))
    .pipe(gulp.dest(source+'/js'))
    .pipe(browserSync.reload({stream: true}))
});

gulp.task('images', function() {
  return gulp.src(source+'/img/**/*')
    .pipe(cache(imagemin({
      interlaced: true,
      progressive: true,
      svgoPlugins: [{removeViewBox: false}],
      use: [pngquant()]
    })))
    .pipe(gulp.dest(source+'/img'))
});

gulp.task('browser-sync', function() {
  browserSync({
    server: {
      baseDir: source
    },
    notify: false,
  })
});

gulp.task('watch', function() {
  gulp.watch(source+'/*.html', gulp.parallel('code'))
  gulp.watch(source+'/'+syntax+'/**/*.'+syntax, gulp.parallel('styles'))
  gulp.watch(source+'/js/common.js', gulp.parallel('scripts'))
});

gulp.task('default', gulp.series(
  gulp.series('styles', 'scripts', 'images'),
  gulp.parallel('watch', 'browser-sync')
));

Answer 1

Because you need to write #!/bin/bash in the shabang, since it's bash, not pure sh.

Answer 2

Can you post the line from cron?
Your script works for me.
/usr/local/bin/smg1016_cfg_copier is the script itself?

Answer 3

cd mnt

why permanent transition to mnt? especially the path is relative:
then it’s better like this:
file is in /mnt/ ? because the variable contains only its name, and the directory is always taken as the current one, if the absolute path to the file is not specified.