Jiepu class notes (1)

Basic AAA knowledge-========================== who command is to display the current user boss @ boss: ~ $ CAT/etc/passwd root: X: 0: 0: Root:/root:/bin/bash daemon: X: 1: 1: daemon:/usr/sbin: /bin/sh bin: X: 2: 2: Bin:/bin/sh SYS: X: 3: SYS:/dev:/bin/sh Sync: x: 4: 65534: Sync:/bin/Sync games: X: 5: 60: games:/usr/games:/bin/sh man: X: 6: 12: Man:/var/Cache/MAN:/bin/sh LP: X: 7: 7: LP:/var/spool/lpd:/bin/sh mail: X: 8: 8: Mail:/var/mail:/bin/sh news: X: 9: 9: News:/var/spool/news:/bin/sh uucp: X: 10: 10: uucp:/var/spool/uucp:/bin/ Sh Proxy: X: 13: 13: proxy:/bin/sh www-data: X: 33: 33: www-data:/var/www: /bin/sh backup: X: 34: 34: Backup:/var/backups:/bin/sh list: X: 38: 38: Mailing List Manager:/var/List: /bin/sh IRC: X: 39: 39: IRCd:/var/run/IRCd:/bin/sh gnats: X: 41: 41: gnats bug-Reporting System (Admin):/var/lib/gnats:/bin/sh nobody: X: 65534: 65534: Nobody:/nonexistent:/bin/sh MYSQL: x: 60008: 60008:/home/MySQL:/bin/sh alias: X: 60000: 60000:/var /Qmail/alias:/bin/sh qmaild: X: 60001: 60000:/var/Qmail:/bin/sh qmaill: X: 60002: 60000 :: /var/Qmail:/bin/sh qmailp: X: 60003: 60000:/var/Qmail:/bin/sh qmailq: X: 60004: 60001 :: /var/Qmail:/bin/sh qmailr: X: 60005: 60001:/var/Qmail:/bin/sh qmails: X: 60006: 60001 :: /var/Qmail:/bin/sh CVS: X: 6009: 6009:/home/CVS:/bin/sh Vpopmail: X: 60007: 60002 :: /home/Vpopmail:/bin/sh sshd: X: 100: 65534:/var/run/sshd:/usr/sbin/nologin t Elnetd: X: 101: 103:/nonexistent:/bin/false BOSS: X: 1000: 104:/home/Boss:/bin/bash chengx: X: 1001: 104:/home/chengx:/bin/bash DOC: X: 1002: 1:/usr/local/boss/Apache/htdocs/DOC:/bin/sh duanxm: x: 1003: 104:/home/duanxm:/bin/bash liangxn: X: 1004: 104:/home/liangxn:/bin/bash zhangzz: X: 1005: 104:/home/zhangzz:/bin/bash yanqm: X: 1006: 104:/home/yanqm:/bin/bash zhanaa: X: 1007: 104 :: /home/zhanaa:/bin/bash zhangbo: X: 1008: 104:/home/zhangbo:/bin/bash lizq: X: 1009: 104:/home/lizq:/bin/bash guojia: X: 1010: 104: :/home/guojia:/bin/bash zhangbq: X: 1011: 104:/home/zhangbq:/bin/bash yujj: X: 1012: 104 :: /home/yujj:/bin/bash fanwe: X: 1013:/home/fanwe:/bin/bash fubl: X: 104: 1014 :: /home/fubl:/bin/bash wanyuan: X: 1015: 104:/home/wanyuan:/bin/bash Guoqi: X: 1016: 104 :: /home/Guoqi:/bin/bash Zhaofeng: X: 1017: 104:/home/Zhaofeng:/bin/B Ash wenyn: X: 1018: 104:/home/wenyn:/bin/bash wukh: X: 1019: 104:/home/wukh:/bin/bash huanggh: x: 1020: 104:/home/huanggh:/bin/bash yanglh: X: 1021:/home/yanglh:/bin/bash xiaoliang: X: 104: 104:/home/xiaoliang:/bin/bash jirong: X: 1023: 104:/home/jirong:/bin/bash chenlz: X: 1024: 104 :: /home/chenlz:/bin/bash hush: X: 1025: 104:/home/hush:/bin/bash luzb: X: 1026: 104 :: /home/luzb:/bin/bash liujun: X: 1027: 104:/home /Liujun:/bin/bash boxue: X: 1028: 104:/home/boxue:/bin/bash liucz: X: 1029: 104:/home/liucz: /bin/bash boss @ BOSS :~ $ BOSS:/home/boss # ID // check the current user ID uid = 0 (Root) gid = 0 (Root) groups = 0 (Root) Boss: /home/boss # echo $ home // view the user's home directory/root BOSS:/home/boss # PWD // view the current directory/home/boss: /home/boss # log onto Telnet 210.43.202.96 login: zhangsan (zhangsan) zhangsf (zhangsanfeng) zhangsf (zhangshanfeng) passwd: Boss (not displayed) Boss @ BOSS :~ $ CAT/etc/passwd | grep chengx: X: 1001: 104:/home/chengx:/bin/bash boss @ BOSS :~ $ All usernames of the AAA Server are stored in/etc/passwd, and passwords are stored in/etc/shadow. Boss @ BOSS :~ $ CD/usr/local/boss @ BOSS:/usr/local/boss $ PWD/usr/local/boss @ boss: /usr/local/boss $ CD/usr/bin boss @ BOSS:/usr/bin $ PWD/usr/bin boss @ BOSS:/usr/bin $ CD boss @ boss: ~ $ PWD/home/boss @ BOSS :~ $ Boss @ BOSS :~ $ Cd./boss @ BOSS :~ $ PWD/home/boss @ BOSS :~ $ CD .. boss @ BOSS:/home $ PWD/home boss @ BOSS:/home $ CD .. /.. /.. /. /. /.. /boss @ BOSS:/$ PWD/boss @ BOSS:/$ boss @ BOSS :~ $ LS-r/chengx @ BOSS :~ $ Touch Apple chengx @ BOSS :~ $ View the detailed attributes of the radwtmp file in the/var/AAA directory of the ADSL dialing data list. 1: CD/var/aaa ls-L/radwtmp 2: ls-L/var/AAA/radwtmp 3: ls-L/var/AAA View Details of all files in the entire directory