????/dev/null??????????????豸????????
????/dev/zero???????????
????/dev/tty[0-63]?????????
????/dev/ttyS[0-3]??????
????/dev/lp[0-3]??????
????/dev/console???????
????/dev/fb[0-31]??framebuffer
????/dev/cdrom => /dev/hdc
????/dev/modem => /dev/ttyS[0-9]
????/dev/pilot => /dev/ttyS[0-9]
????/dev/random????????豸
????/dev/urandom????????豸
????(PS????????豸???????????д???????????)
????/dev???μ???????????????
????devf????udev????????????á?
????kobject??sysfs????????????udev?????????sysfs??????′??????豸???
????????????????????????????????????????????????????????????????????????????????????????
????/etc?? ??
??????????????.?????????????????/etc ??.
????/etc/rc   or /etc/rc.d   or /etc/rc*.d  ????????????????м?????е?scripts??scripts????.
????/etc/passwd
???????????????е???????????????????????????????????????????????????.
????/etc/fstab
????????mount -a????(??/etc/rc ???Ч??????????)???mount????????б?. Linux?￡????????swapon -a?????swap???????.
????/etc/group
????????/etc/passwd ?????????????????????.
????/etc/inittab
????init ?????????.
????/etc/issue
????getty ??????????????????.?????????????ζ??????????.????????????????.
????/etc/motd
????Message Of The Day????????????????.????????????????.??????????????????????????????.
????/etc/mtab
??????????????????б?.??scripts???????????mount ???????????.??????????????????????б??????????df ????.
????/etc/shadow
???????????????????????????????????.???????????/etc/passwd ????е????????????/etc/shadow ?У??????????root???.???????????????.
????/etc/login.defs
????login ????????????.
????/etc/printcap
????????/etc/termcap ???????????.?????.
????/etc/profile ?? /etc/csh.login ?? /etc/csh.cshrc
?????????????Bourne??C shells??е????.??????????????????????????????????.
????/etc/securetty
?????????????????????????root???.?????г?????????????????????(?????????)???modem?????紳???????????????????.
????/etc/shells
?????г??????ε?shell.chsh ??????????????????????Χ??????shell.????????FTP???????????ftpd ??????shell??????? /etc/shells ????У??????????????????????.
????/etc/sysconfig
?????????????????