????10??Linux???????????Щ???????λ??

????-rw-r--r--?????????????????- --- --- ---????λ??

???????????????????????????-???????????c???????豸??character????b??????豸??block????d???????directory????l????????????link????????????????????????????????λ??User???????????????????????????λ??Group??????????????????????????????λ??Other??????????λ??????????r??????????w??д??????x????????????????????λ??????????????????????????-rwxrwxrwx??????????????- --- --- ---??

?????????趨??????chmod????????λ??chmod ugoa+/-/=rwx filename/directory?????磺

??????????aaa?????????????- --- --- ---??

????chmod u+rw aaa??????????λ?????д??????????????- rw- --- ---??

????chmod g+r aaa?????????????????????????????- --- r-- ---??

????chmod ugo+rw aaa??????????飬?????????????????????д??????????- rw- rw- rw-??

???????aaa?????????- rwx rwx rwx??

????chmod u-x aaa?????????????????????????- rw- rwx rwx??

??????????aaa??????????- rwx r-x r-x?????????

????chmod u=rwx??go=rx aaa

????11??makefile???????????????

????????????е??????????????????????????????????????????С?makefile?????????е???????????Щ?????????????Щ?????????????Щ?????????±???????????и?????????????????makefile?????Shell???????????????????в??????????makefile??????????——“?????????”?????д??????????make?????????????????????????????????????????Ч???make?????????????????????makefile????????????????????????????IDE??????????????磺Delphi??make??Visual C++??nmake??Linux??GNU??make???????makefile??????????????????????????

????12??????OSI???????Layer1????·??Layer2???????Layer3??????

????????????·????????????????????????????????????·????

??????·????????????Э?飬???в????????????????????????????????????????·??

??????????????????????????·??????????????????????????????

????13???????ж???ж??CPU??????????

?????ж????????????????????????κη??????????????賬??????????CPU????ж?????????е??????????????????????????????????????????????ж????????л?????μ??????е?????

????14???????????????????????????????????????棿?????????????Σ????????????????????????

????????????????????????????????????洢??????豸???????????????????????Щ??????????????????????????????С?4K???????????????????????С??4K???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????+???????????????????????????