Vulhub 漏洞學習之:Fastjson
阿新 • • 發佈:2022-05-25
sys模組
sys.argv
接受命令列傳遞的引數 第一個引數時檔名稱,後續為引數 指令碼內容: #!/usr/bin/python3 import sys name="hello world" print(name) print("-------------------------------"); print("The list of command line arguments:\n", sys.argv) print("-------------------------------"); for i in sys.argv: print(i) 輸出: [root@localhost scripts]# python3 first.py hello1 hello2 hello world ------------------------------- The list of command line arguments: ['first.py', 'hello1', 'hello2'] ------------------------------- first.py hello1 hello2
sys.platform
在linux環境下:
sys.platform 為linux
在windows環境下:
sys.platform 為win32
sys.executable
指令碼: #!/usr/bin/python3 import sys name="hello world" print(name) print("-------------------------------"); print("The list of command line arguments:\n", sys.argv) print("-------------------------------"); for i in sys.argv: print(i) print(sys.platform) print(sys.executable) 輸出: [root@localhost scripts]# python3 first.py hello1 hello2 hello world ------------------------------- The list of command line arguments: ['first.py', 'hello1', 'hello2'] ------------------------------- first.py hello1 hello2 linux /usr/bin/python3
sys.modules
指令碼: #!/usr/bin/python3 import sys name="hello world" print(name) print("-------------------------------"); print("The list of command line arguments:\n", sys.argv) print("-------------------------------"); for i in sys.argv: print(i) print(sys.platform) print(sys.executable) print("-------------------------------"); print(sys.modules) 輸出: [root@localhost scripts]# python3 first.py hello1 hello2 hello world ------------------------------- The list of command line arguments: ['first.py', 'hello1', 'hello2'] ------------------------------- first.py hello1 hello2 linux /usr/bin/python3 ------------------------------- {'builtins': <module 'builtins' (built-in)>, 'sys': <module 'sys' (built-in)>, '_frozen_importlib': <module '_frozen_importlib' (frozen)>, '_imp': <module '_imp' (built-in)>, '_warnings': <module '_warnings' (built-in)>, '_thread': <module '_thread' (built-in)>, '_weakref': <module '_weakref' (built-in)>, '_frozen_importlib_external': <module '_frozen_importlib_external' (frozen)>, '_io': <module 'io' (built-in)>, 'marshal': <module 'marshal' (built-in)>, 'posix': <module 'posix' (built-in)>, 'zipimport': <module 'zipimport' (built-in)>, 'encodings': <module 'encodings' from '/usr/lib64/python3.6/encodings/__init__.py'>, 'codecs': <module 'codecs' from '/usr/lib64/python3.6/codecs.py'>, '_codecs': <module '_codecs' (built-in)>, 'encodings.aliases': <module 'encodings.aliases' from '/usr/lib64/python3.6/encodings/aliases.py'>, 'encodings.utf_8': <module 'encodings.utf_8' from '/usr/lib64/python3.6/encodings/utf_8.py'>, '_signal': <module '_signal' (built-in)>, '__main__': <module '__main__' from 'first.py'>, 'encodings.latin_1': <module 'encodings.latin_1' from '/usr/lib64/python3.6/encodings/latin_1.py'>, 'io': <module 'io' from '/usr/lib64/python3.6/io.py'>, 'abc': <module 'abc' from '/usr/lib64/python3.6/abc.py'>, '_weakrefset': <module '_weakrefset' from '/usr/lib64/python3.6/_weakrefset.py'>, 'site': <module 'site' from '/usr/lib64/python3.6/site.py'>, 'os': <module 'os' from '/usr/lib64/python3.6/os.py'>, 'errno': <module 'errno' (built-in)>, 'stat': <module 'stat' from '/usr/lib64/python3.6/stat.py'>, '_stat': <module '_stat' (built-in)>, 'posixpath': <module 'posixpath' from '/usr/lib64/python3.6/posixpath.py'>, 'genericpath': <module 'genericpath' from '/usr/lib64/python3.6/genericpath.py'>, 'os.path': <module 'posixpath' from '/usr/lib64/python3.6/posixpath.py'>, '_collections_abc': <module '_collections_abc' from '/usr/lib64/python3.6/_collections_abc.py'>, '_sitebuiltins': <module '_sitebuiltins' from '/usr/lib64/python3.6/_sitebuiltins.py'>, 'sysconfig': <module 'sysconfig' from '/usr/lib64/python3.6/sysconfig.py'>, '_sysconfigdata_m_linux_x86_64-linux-gnu': <module '_sysconfigdata_m_linux_x86_64-linux-gnu' from '/usr/lib64/python3.6/_sysconfigdata_m_linux_x86_64-linux-gnu.py'>}
sys.path
該屬性是一個由字串組成的列表,其中各個元素表示的是 Python 搜尋模組的路徑;在程式啟動期間被初始化。
其中第一個元素(也就是path[0])的值是最初呼叫 Python 直譯器的指令碼所在的絕對路徑;如果是在互動式環境下檢視sys.path的值,就會得到一個空字串。
sys.path
輸出:
['/root/scripts', '/usr/lib64/python36.zip', '/usr/lib64/python3.6', '/usr/lib64/python3.6/lib-dynload', '/usr/lib64/python3.6/site-packages', '/usr/lib/python3.6/site-packages']
sys.exit
功能:執行到主程式末尾,直譯器自動退出,但是如果需要中途退出程式,可以呼叫sys.exit函式,帶有一個可選的整數引數返回給呼叫它的程式,表示你可以在主程式中捕獲對sys.exit的呼叫。(0是正常退出,其他為異常)
sys.stdin sys.stdout sys.err