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fail2ban-python - Man Page

a helper for Fail2Ban to assure that the same Python is used


usage: fail2ban-python [option] ... [-c cmd | -m mod | file | -] [arg] ... Options and arguments (and corresponding environment variables): -b     : issue warnings about comparing bytearray with unicode

(-bb: issue errors)

-B     : don't write .py[co] files on import; also PYTHONDONTWRITEBYTECODE=x -c cmd : program passed in as string (terminates option list) -d     : debug output from parser; also PYTHONDEBUG=x -E     : ignore PYTHON* environment variables (such as PYTHONPATH) -h     : print this help message and exit (also --help) -i     : inspect interactively after running script; forces a prompt even

if stdin does not appear to be a terminal; also PYTHONINSPECT=x

-m mod : run library module as a script (terminates option list) -O     : optimize generated bytecode slightly; also PYTHONOPTIMIZE=x -OO    : remove doc-strings in addition to the -O optimizations -R     : use a pseudo-random salt to make hash() values of various types be

unpredictable between separate invocations of the interpreter, as a defense against denial-of-service attacks

-Q arg : division options: -Qold (default), -Qwarn, -Qwarnall, -Qnew -s     : don't add user site directory to sys.path; also PYTHONNOUSERSITE -S     : don't imply 'import site' on initialization -t     : issue warnings about inconsistent tab usage (-tt: issue errors) -u     : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x

see man page for details on internal buffering relating to '-u'

-v     : verbose (trace import statements); also PYTHONVERBOSE=x

can be supplied multiple times to increase verbosity

-V     : print the Python version number and exit (also --version) -W arg : warning control; arg is action:message:category:module:lineno


-x     : skip first line of source, allowing use of non-Unix forms of #!cmd -3     : warn about Python 3.x incompatibilities that 2to3 cannot trivially fix file   : program read from script file -      : program read from stdin (default; interactive mode if a tty) arg ...: arguments passed to program in sys.argv[1:]

Other environment variables: PYTHONSTARTUP: file executed on interactive startup (no default) PYTHONPATH   : ':'-separated list of directories prefixed to the

default module search path.

The result is sys.path.

PYTHONHOME   : alternate <prefix> directory (or <prefix>:<exec_prefix>).

The default module search path uses <prefix>/pythonX.X.

PYTHONCASEOK : ignore case in 'import' statements (Windows). PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr. PYTHONHASHSEED: if this variable is set to 'random', the effect is the same

as specifying the -R option: a random value is used to seed the hashes of str, bytes and datetime objects.  It can also be set to an integer in the range [0,4294967295] to get hash values with a predictable seed.

See Also



November 2022 fail2ban-python 1.0.2