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Why am I not able to execute this bash script using php? I have tried exec() as well as shell_exec().
index.php
<?php
$old = getcwd();
echo $old;
chdir($old);
$message=exec("a.sh");
print_r($message);
?>
a.sh
#!bin/bash
echo "i am a" > /opt/lampp/htdocs/a.txt
echo "Done"
I have tried chdir as suggested here, as well as I have checked my disable_functions in php.ini, it doesn't have anything. I have also checked other questions, but none seem to solve my problem.
First, be sure that the shebang is exactly as follow:
#!/bin/bash
Second, be sure that the script is executable using the following command in terminal:
chmod +x /path/to/a.sh
And third, you must to use the full path for the bash script, or in your case, you can use:
$message=exec("$old/a.sh");
And, as an aside note, the following two commands from your php script have no sense:
$old = getcwd();
chdir($old);
They are equivalent with chdir(getcwd()), which change the current directory to ...the current directory, so in fact, nothing happens.
#!bin/bash, not #!/bin/bash as I said which obviously are not the same
Sep 5, 2014 at 17:47
a.txt. What else may be the problem?
Sep 5, 2014 at 17:51
chdir($old)twice? Is that a typo?$oldshows the correct path of a.sh. Asindex.phpanda.share in the same dir.chdirwas there because I copied that from somewhere, then edited the 1st chdir but not the second.a.shhave#!/bin/bashas the first line? Have you triedexec("/bin/bash a.sh")binso it reads#!/bin/bash