rstrip,strip,lstrip三個函數主要用於移除字串中的滿足條件的字元,傳入參數是一個字元數組,它們分別表示匹配並去掉右邊、兩邊、左邊的字元。當沒有參數傳入時,strip()表示去除首尾空格,其它兩個函數同理。code:>>> str = '\tgood to say you,you are a good guys!doddoog! \n'>>> nospace = str.strip()>>> nospace'good to
三人決鬥問題(槍手博弈)題目是這樣的:A、B、C三人進行決鬥。A 的射擊命中率是三分之一,也就是說如果他努力的話,他平均每三槍可以擊中一次;B 的射擊命中率是二分之一;C 的射擊命中率是一(也就是百分之百)。由於 A 的命中率最低,為公平起見,他們讓 A 先射,然後是 B(如果他還活著的話),然後是 C(如果他還活著的話)。再然後是
1.例子echo %time:~0,-1% 顯示時間字元,從第0個到最後一個C:\Documents and Settings>echo %time:~0,-1%19:00:22.3C:\Documents and Settings>echo %time%19:00:29.49C:\Documents and Settings>echo %date:~2,-1%12-09-27 星期C:\Documents and Settings>echo %date:~,3% /
未作整理。。。NS3中的包IP首部校正和功能是預設關閉的,需要主動設定才行。。Just because ns-3 disable the checksum, you can enable it by GlobalValue::Bind ("ChecksumEnabled", BooleanValue (true)); in ns-3.8: CalcChecksum attribute changes Four IPv4 CalcChecksum attributes (which enable
找了很多資料,很少有關於Scapy 下載和安裝的。關聯地址:http://www.secdev.org/projects/scapy/doc/installation.html Windows¶Scapy is primarily being developed for Unix-like systems and works best on those platforms. But the latest version of Scapy supports Windows
Show only SMTP (port 25) and ICMP traffic: tcp.port eq 25 or icmpShow only traffic in the LAN (192.168.x.x), between workstations and servers -- no Internet: ip.src==192.168.0.0/16 and ip.dst==192.168.0.0/16TCP buffer full -- Source is instructing
options:-c <packets per file>Splits the packet output to different files based on uniform packet counts with a maximum of <packets per file> each. Each output file will be created with a suffix -nnnnn, starting with 00000. If the
source address : http://www.linuxjournal.com/article/6788?page=0,1 1.Byte Order: the Endianness Two types of endianness exist, big endian and little endian. Big endian refers to the method that stores the most significant byte of an integer at