Are there any solutions to this command(shell code) problem

I have some shell codes looks like:

while read line; do echo $line; done < (ls -la $path)

but, get an error “-bash: syntax error near unexpected token `(‘” which i can’t fix it. I do know the pipeline command can also do it well. likes

ls -la $path | while read line; do echo $line; done

but actually I wish to do something in the loops like change the global value

while read line; $((count++)); done 

and the pipeline didn’t work.

Answer

The correct syntax for process substitution is:

while read line; do echo $line; done < <(ls -la $path)

But anyways, doing it this way is not a good idea at all, use a for loop instead:

for fname in "$path"/* "$path"/.*; do
  echo "$fname"
done

And if you need to get information about a file in the loop, use stat.