etc/passwd 파일의 내용

root:x:0:0:root:/root:/bin/bash

bin:x:1:1:bin:/bin:/sbin/nologin

daemon:x:2:2:daemon:/sbin:/sbin/nologin

adm:x:3:4:adm:/var/adm:/sbin/nologin

lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin

sync:x:5:0:sync:/sbin:/bin/sync

shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown

halt:x:7:0:halt:/sbin:/sbin/halt

mail:x:8:12:mail:/var/spool/mail:/sbin/nologin

news:x:9:13:news:/etc/news:

uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin

operator:x:11:0:operator:/root:/sbin/nologin

games:x:12:100:games:/usr/games:/sbin/nologin

gopher:x:13:30:gopher:/var/gopher:/sbin/nologin

ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin

nobody:x:99:99:Nobody:/:/sbin/nologin

rpm:x:37:37::/var/lib/rpm:/sbin/nologin

vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin

apache:x:48:48:Apache:/var/www:/sbin/nologin

mailnull:x:47:47::/var/spool/mqueue:/sbin/nologin

smmsp:x:51:51::/var/spool/mqueue:/sbin/nologin

rpc:x:32:32:Rpcbind Daemon:/var/lib/rpcbind:/sbin/nologin

distcache:x:94:94:Distcache:/:/sbin/nologin

ntp:x:38:38::/etc/ntp:/sbin/nologin

nscd:x:28:28:NSCD Daemon:/:/sbin/nologin

squid:x:23:23::/var/spool/squid:/sbin/nologin

webalizer:x:67:67:Webalizer:/var/www/usage:/sbin/nologin

tcpdump:x:72:72::/:/sbin/nologin

dbus:x:81:81:System message bus:/:/sbin/nologin

avahi:x:70:70:Avahi daemon:/:/sbin/nologin

hsqldb:x:96:96::/var/lib/hsqldb:/sbin/nologin

torrent:x:499:498:BitTorrent Seed/Tracker:/var/spool/bittorrent:/sbin/nologin

sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin

rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin

nfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologin

haldaemon:x:68:68:HAL daemon:/:/sbin/nologin

xfs:x:43:43:X Font Server:/etc/X11/fs:/sbin/nologin

gdm:x:42:42::/var/gdm:/sbin/nologin

ddrover:x:500:501::/home/02/ddrover:/bin/bash

20024072:x:501:501::/home/02/20024072:/bin/bash

forty21:x:502:500::/home/03/forty21:/bin/bash

bloodeva:x:503:502::/home/02/bloodeva:/bin/bash

happyid:x:504:502::/home/02/happyid:/bin/bash

rebigoon:x:505:500::/home/02/rebigoon:/bin/bash

maruni:x:506:502::/home/02/maruni:/bin/bash

redkais:x:507:501::/home/02/redkais:/bin/bash

hana3486:x:508:500::/home/05/hana3486:/bin/bash

dkyou:x:509:500::/home/00/dkyou:/bin/bash

tjalsghg:x:510:502::/home/02/tjalsghg:/bin/bash

kimdoyeon:x:511:500::/home/05/kimdoyeon:/bin/bash

coolkaze:x:512:502::/home/00/coolkaze:/bin/bash

happy77a:x:513:500::/home/03/happy77a:/bin/bash

a5810:x:514:501::/home/03/a5810:/bin/bash

villainmsh:x:515:502::/home/02/villainmsh:/bin/bash

계정명:패스워드:UID:GID:설명:홈디렉토리:쉘종류

순서로 쓰여 있는 것을 볼 수 있다.

etc/shadow 파일의 내용

root:$1$Ea5zImAf$CS8YGAvGSdEyAe8/s8kvW0:13977:0:99999:7:::

bin:*:13977:0:99999:7:::

daemon:*:13977:0:99999:7:::

adm:*:13977:0:99999:7:::

lp:*:13977:0:99999:7:::

sync:*:13977:0:99999:7:::

shutdown:*:13977:0:99999:7:::

halt:*:13977:0:99999:7:::

mail:*:13977:0:99999:7:::

news:*:13977:0:99999:7:::

uucp:*:13977:0:99999:7:::

operator:*:13977:0:99999:7:::

games:*:13977:0:99999:7:::

gopher:*:13977:0:99999:7:::

ftp:*:13977:0:99999:7:::

nobody:*:13977:0:99999:7:::

rpm:!!:13977:0:99999:7:::

vcsa:!!:13977:0:99999:7:::

apache:!!:13977:0:99999:7:::

mailnull:!!:13977:0:99999:7:::

smmsp:!!:13977:0:99999:7:::

rpc:!!:13977:0:99999:7:::

distcache:!!:13977:0:99999:7:::

ntp:!!:13977:0:99999:7:::

nscd:!!:13977:0:99999:7:::

squid:!!:13977:0:99999:7:::

webalizer:!!:13977:0:99999:7:::

tcpdump:!!:13977:0:99999:7:::

dbus:!!:13977:0:99999:7:::

avahi:!!:13977:0:99999:7:::

hsqldb:!!:13977:0:99999:7:::

torrent:!!:13977:0:99999:7:::

sshd:!!:13977:0:99999:7:::

rpcuser:!!:13977:0:99999:7:::

nfsnobody:!!:13977:0:99999:7:::

haldaemon:!!:13977:0:99999:7:::

xfs:!!:13977:0:99999:7:::

gdm:!!:13977:0:99999:7:::

ddrover:$1$p9DFZ6PW$Zc9c97W3T./dy6iwtMJTI1:6594:0:99999:7:::

20024072:$1$rpkxjIlW$c52z8whyejOtzPHPPCMh..:6594:0:99999:7:::

forty21:$1$dD8VFdj7$nsvcsG1/jF8j1oiltwukq1:6594:0:99999:7:::

bloodeva:$1$Ibsu0dIh$P9o3GUMO4ybTBxRGPz5051:6594:0:99999:7:::

happyid:$1$ddSY2JKo$VzDtzG8YGuiCziYO9ZVlO1:6594:0:99999:7:::

rebigoon:$1$oFCWG3Gl$20IalQvH1B3QaRFaIazZi.:6594:0:99999:7:::

maruni:$1$o2sFv6CC$5agDhmRFU3QV/umMxfxrQ1:6594:0:99999:7:::

redkais:$1$V8o8C4fv$n6.1Gtz/MZJumEOPlahqc/:6594:0:99999:7:::

hana3486:$1$HPTIcyos$GBxnOJTqMPF7Vr.rLcOm0/:6594:0:99999:7:::

dkyou:$1$XHERABF9$ai8LPlbVgYGmqpASW2lPI0:6594:0:99999:7:::

tjalsghg:$1$W1o7fZo2$O/OOx16eOS3aEaGoRkO4z1:6594:0:99999:7:::

kimdoyeon:$1$448z5CGc$sb/qRvE/Vu/Jc24hDsqpq/:6594:0:99999:7:::

coolkaze:$1$ezp03KjJ$/M2EGD93QvQAEtd2btn0R.:6594:0:99999:7:::

happy77a:$1$bPyWkHex$xkyq/C0965M/2xD3ydGlT.:6594:0:99999:7:::

a5810:$1$qNx9R3hm$X1SeQNTbkoFiKIBIDYYvV0:6594:0:99999:7:::

villainmsh:$1$m/LaBhKe$hn/M.asKR.QJnfCT4YIUQ0:6594:0:99999:7:::

/etc/shadow 파일 구조
   username:password:lastchg: min:max:warn: inactive:expire:flag
    . lastchg 최근 패스워드 변경일 (1970년 1월 1일 기준의 날짜 수)
    . min 패스워드 변경 후, 재설정을 위한 대기일 수
    . max 패스워드 유효기간
    . warn 패스워드 변경 경고 시간
    . inactive 패스워드 유효 기간  (5일이면, 5일에 한번은 들어가야 된다.)
    . expire 패스워드 만료 기간 이후 계정을 사용할 수 없게 되는 기간
    . flag 현재는 사용되지 않으며, 0으로 지정

etc/skel

하위의

.bash_profile 파일의 내용

# .bash_profile

# Get the aliases and functions

if [ -f ~/.bashrc ]; then

        . ~/.bashrc

fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH

.bash_logout 파일의 내용

# ~/.bash_logout

/usr/bin/clear

.bashrc 파일의 내용

# .bashrc

# Source global definitions

if [ -f /etc/bashrc ]; then

        . /etc/bashrc

fi

# User specific aliases and functions