Q:

Node exec doesn't have permission to execute script

Up until recently, it has worked fine, but when I tried to use it today, it did not work properly.  It returns the following error: 

Error: Command failed: /bin/sh -c
  /home/pi/RPi-Computer-Power/RPi-Server/routes/../scripts/hash.js
  12345678 /bin/sh: 1:
  /home/pi/RPi-Computer-Power/RPi-Server/routes/../scripts/hash.js:
  Permission denied

I am extremely confused because when I try to run the script from the command line, it works perfectly; /home/pi/RPi-Computer-Power/RPi-Server/routes/../scripts/hash.js 12345 executes flawlessly. 
This is the code where I try to execute the script. ( index.js)
exec(__dirname+"/../scripts/"+req.params.script+" "+req.body.params, function(err, stdout, stderr) {
        console.log("err: ",err,"stdout: ",stdout,"stderr: ",stderr);
        if(err){
          res.send("<a href='/'>< Back</a> <b>Program Error:</b> "+err.toString());
          return;
        }
        //res.send("<a href='/'>< Back</a> <b>Program Output:</b> <div style='white-space:pre-line>'"+stdout+stderr+"</div>");
        res.render("programOutput", {output: stdout});
      });

If anyone has any help, thank you in advance. 
Neil

A:

Two things come to mind:
1) Make sure that the script you are trying to execute is executable ex: chmod +x /folder/script
2) The default terminal shell on many Linux distributions is bash.  The error you displayed includes using /bin/sh -c, which would default in many Linux distributions to dash (yes, a different default shell for the terminal and for running scripts without the terminal).  Thus, since it seems to work in bash, try to evoke the script with bash -c /folder/script.