我是python cgi的新手，使用ubuntu 12.04在apache 2.2.22 http服务器上。我正在编写一个将创建其他Python脚本的脚本。这些创建的脚本必须具有" CHMOD X"权限才能执行。创建脚本的脚本必须提供这些权限，我无法弄清楚如何使其完成此操作。
在创建文件的代码中，我对此感到好奇：
os.system('sudo chmod +x %s.py' %(fname))
这是给出创建的文件" CHMOD X"权限的尝试。OS.System命令不给出创建的脚本" CHMOD X"特权，这可能是因为它不是由具有Sudo特权的服务器运行的。如何让服务器给脚本创建脚本SUDO权限？
完整的代码如下。它是用户帐户创建系统的一部分：
#!/usr/bin/python
import cgi, os
import cgitb
cgitb.enable()
# Retrieve form fields
form = cgi.FieldStorage() # Get POST data
fname = form.getfirst("fname") # Pull fname field data
passw = form.getfirst("passw") # Pull lname field data
# Begin HTML generation
print "Content-Type: text/html; charset=UTF-8" # Print headers
print ""
try:
with open('Users/%s.py' %(fname)):
print '''
<!DOCTYPE html>
<html>
<head>
<link media="screen" type="text/css" rel="stylesheet" href="/style.css"></linK>
<meta charset="UTF-8">
<META http-equiv="refresh" content="3;URL=/cgi-bin/createAccount/createAccount.html">
<meta name="keywords" content="chat, chat.ngrok.com">
<title>Please Wait</title>
<body bgcolor="black">
<div id="navbar">
<ul>
<li><a href="/">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="/">Create Account</a></li>
<li><a href="/">Login</a></li>
<li><a href="/">LinkHere</a></li>
</ul>
</div>
<div class="Container">
<div class="Header"></div>
<div id="fire">
<br>
<h1>Sorry, this username is already taken!</h1>
</div>
</body>
</html>
'''
except IOError:
createU = open('Users/%s.py' %(fname),'w')
createU.write('''#!/usr/bin/python
print "Content-type: text/html; charset=UTF-8"
print ""
print "<!DOCTYPE html>"
print "<html>"
print "<head>"
print "<link media='screen' type='text/css' rel='stylesheet' src='/style.css'></link>"
print "</title>Test</title>"
print "</head>"
print "<body bgcolor='black'>"
print "<div id='navbar'>"
print "<ul>"
print "<a href='/'>Home</a></li>"
print "<a href='/'>About</a></li>"
print "<a href='/'>Create Account</a></li>"
print "<a href='/'>Login</a></li>"
print "<a href='/'>LinkHere</a></li>"
print "</ul>"
print "</div>"
print "<div class='Container'>"
print "<div class='Header'></div>"
print "</body>"
print "</html>"''')
createU.close()
os.system('sudo chmod +x %s.py' %(fname))
print '''
<!DOCTYPE html>
<html>
<head>
<link media="screen" type="text/css" rel="stylesheet" href="/style.css"></linK>
<meta charset="UTF-8">
<meta name="keywords" content="chat, chat.ngrok.com">
<title>Please Wait</title>
<body bgcolor="black">
<div id="navbar">
<ul>
<li><a href="/">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="/">Create Account</a></li>
<li><a href="/">Login</a></li>
<li><a href="/">LinkHere</a></li>
</ul>
</div>
<div class="Container">
<div class="Header"></div>
<div id="fire">
<br>
<h1>Loading... Please Wait!</h1>
</div>
<form action="./test.py" name="FNAME" method="post">
'''
print '<input type="hidden" name="passw" value="%s" />' %(passw)
print '''
</form>
<SCRIPT TYPE="text/JavaScript">document.forms["FNAME"].submit();</SCRIPT>
</form>
</body>
</html>
'''
您是在用户/目录中创建文件，但随后您尝试在该目录之外进行CHMOD。
您的CHMOD命令应为os.system('chmod +x Users/%s.py' %(fname))