File says permission denied, despite the fact that I have run 'chmod 777' on the file

Question

I recently installed jGRASP on ChromeOS Crostini (like debian linux). Whenever I try to run any .java file in the IDE, this is the output:

(Cannot run program "/home/aarnap/jgrasp_bdl206_16/jgrasp/internal_bin/sys_run": error=13, Permission denied)
Check permissions on the file.

This is despite the fact that I have modified the permissions of the file 'sys_run' multiple times

Steps I took to try and solve this problem:

1. Run chmod +x on the file
2. Run chmod 777 on the file

Running the file myself via terminal works fine

Here is the output of ls -l after chmod +x sys_run:

rwxr-xr-x 1 aarnap aarnap   23104 Mar 28 16:38 sys_run

And the output after chmod 777 sys_run

-rwxrwxrwx 1 aarnap aarnap   23104 Mar 28 16:38 sys_run

Expected output: jGRASP does not give me a permission error and the .java file successfully launches Actual output: jGRASP gives me a permission error

Answer 1

Fixed; 'that other guy' comment was technically correct. I was using chmod by itself on each folder and its children instead of using chmod -R. The -R stands for recursive and greatly simplifies the process as you only need to do it on the parent folder.

So I ran: chmod -R jgrasp_bdl206_16