shell_exec with manually installed commands

Question

I cannot seem to get this to work:

shell_exec("/anaconda/bin/scrapy crawl script_v5 -a calln=D5 -o output_D5.csv");

I suspect commands manually installed don't work.

In addition, I was trying to dump the $PATH to know where it searches, but

shell_exec("echo $PATH");

returns NULL.

Why is this so, and how do I solve it?

By the way, I ran the script from a browser calling to localhost where MAMP is running.

https://stackoverflow.com/questions/1941755/getting-output-and-exit-status-from-shell-exec — Ole Haugset, Oct 20 '17 at 10:44
@TobiasF. Yes it returns output like "echo hello" or "type echo" perfectly. — forgodsakehold, Oct 20 '17 at 10:47
Since you are using double quotes, `$PATH` will be interpreted as a PHP variable, it will not reference your OS' `$PATH` system variable. — George, Oct 20 '17 at 10:47
thank you @George for pointing that out. But how about the first line of code? It doesn't work. Is it because of permissions? — forgodsakehold, Oct 20 '17 at 10:50
@humanitiesclinic I'm afraid I could only speculate, but permissions would be my first assumption, yes. (Assuming you can run this script without issue using command line) — George, Oct 20 '17 at 10:58

score 0 · Answer 1 · answered Oct 20 '17 at 10:51

0

Most of the server disabled this function because of high-risk security issue

shell_exec();

so you should read the file and then get your output. using

fopen()

answered Oct 20 '17 at 10:51

Himel Rana

1 Answers1