I'm working on a shell script using Python (Python 2.6.x version).
The subprocess package has been used. I searched and found that some people use shell=True and others don't. I don't see the difference.
subprocess.call("date", shell=True)
subprocess.call("date")
has the same result value. I don't know what you're doing.
python
There is a difference when handing over the factor to the Byeongryeong word.
Running with shell=True usually runs without a separate validation, as shell commands are issued, making it vulnerable to shell injection
If you add the factor to the command as shown below, you can check the difference.
For shell = True
>>> call("ls /", shell = True)
Applications System Volumes dev installer.failurerequests private usr
Library TMVersion.ini bin etc net sbin var
Network Users cores home opt tmp
0
For shell = False
>>> call("ls /", shell = False)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 523, in call
return Popen(*popenargs, **kwargs).wait()
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 711, in __init__
errread, errwrite)
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1343, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
More detailed descriptions are provided in the document below.
https://docs.python.org/2/library/subprocess.html
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