Shell脚本shebang为未知的道路

Question

是否可以在不知道要执行的程序路径的情况下指定shebang行？

也许不指定路径

#!node

或指定几个选项

#!/usr/local/bin/node
#!/usr/bin/node

跨平台解决方案的额外点(各种风格的linux,BSD,OSX等......)

Answer 1

/usr/bin/env 特别考虑了跨平台解决方案.

env executes utility after modifying the environment as specified on
the command line.  The option name=value specifies an environmental
variable, name, with a value of value.  The option `-i' causes env
to completely ignore the environment it inherits.

If no utility is specified, env prints out the names and values of
the variables in the environment, with one name=value pair per line.

所以有些东西:

#!/usr/bin/env node

将跨平台和"正确的方式".