今天，我在尝试为 Twitter 编写密码生成器的代码时被当场抓获。
import string as s,random;print ''.join(random.sample(s.letters+s.digits+s.punctuation,9))
90 个字符。由于这是很多空闲空间，我决定提高标准并使其也可执行。
echo -e "#!/usr/bin/python\nimport string as s,random;print ''.join(random.sample(s.letters+s.digits+s.punctuation,9))">pg;chmod +x pg;./pg
139 个字符。很好，除了很明显 bash 窒息在感叹号上。
badp@delta:~$ echo -e "#!/usr/bin/python\nimport string as s,random;print ''.join(random.sample(s.letters+s.digits+s.punctuation,9))">pg;chmod +x pg;./pg
bash: !/usr/bin/python\nimport: event not found
讨厌的感叹号。“让我们逃离它，”我想！毕竟我有一个备用角色。
echo -e "#\!/usr/bin/python\nimport string as s,random;print ''.join(random.sample(s.letters+s.digits+s.punctuation,9))">pg;chmod +x pg;./pg
明显地...
badp@delta:~$ echo -e "#\!/usr/bin/python\nimport string as s,random;print ''.join(random.sample(s.letters+s.digits+s.punctuation,9))">pg;chmod +x pg;./pg
./pg: line 2: syntax error near unexpected token `('
./pg: line 2: `import string as s,random;print ''.join(random.sample(s.letters+s.digits+s.punctuation,9))'
badp@delta:~$ cat pg
#\!/usr/bin/python …