sed用法

一、sed命令

二、sed选项

三、正则表达式

四、例题解答

题目 1：显示包含 San 的行
]#sed -n ‘/San/p’ datafile

题目 2：显示以 J 开头的人名所在的行
]#sed -n /^J/p datafile

题目 3：显示 700 结尾的行
]#sed -n ‘/700$/p’ datafile

题目 4：显示不包 834 的行
]#sed -n ‘/834/! p’ datafile

题目 5：显示电话号码的区号为 834 的行
]#sed -n /:834-/p datafile

题目 6：显示这样的行:它包含一个大写字后跟四个小写字母,逗号,空格,和一个大写字母
]#sed -n ‘/[A-Z][a-z]{4}, [A-Z]/p’ datafile

题目 7：显示以 K 或 k 开头的行
]#sed -n ‘/^[Kk]/p’ datafile

题目 8：显示工资为六位数的行
]#sed -n ‘/:[0-9]{6}$/p’ datafile

题目 9：显示包括 Lincoln 或 lincoln 的行
]#sed -n ‘/[Ll]incoln/p’ datafile

题目 10：把 Jon 的名字改成 Jonathan
]#sed -n s/Jon/Jonathan/p datafile

题目 11：删除文件头 3 行内容
]#sed 1,3d datafile

题目 12：显示 5-10 行
]#sed -n 5,10p datafile

题目 13：把三个星*添加到有 Fred 的行
]#sed -n /^Fred/s/$/*/p datafile

题目 14：删除空白行
]#sed ‘/^$/d’ datafile

文件：datafile
Steve Blenheim:238-923-7366:95 Latham Lane, Easton, PA 83755:11/12/56:20300
Betty Boop:245-836-8357:635 Cutesy Lane, Hollywood, CA ,91464:6/23/23:14500
Igor Chevsky:385-375-8395:3567 Populus Place, Caldwell, NJ 23875:6/18/68:23400
Norma Corder:397-857-2735:74 Pine Street, Dearborn, MI 23874:3/28/45:245700
Jennifer Cowan:548-834-2348:583 Laurel Ave., Kingsville, TX 83745:10/1/35:58900
Jon DeLoach:408-253-3122:123 Park St., San Jose, CA 04086:7/25/53:85100
Karen Evich:284-758-2857:23 Edgecliff Place, Lincoln, NB 92086:7/25/53:85100
Karen Evich:284-758-2867:23 Edgecliff Place, Lincoln, NB 92743:11/3/35:58200
Karen Evich:284-758-2867:23 Edgecliff Place, Lincoln, NB 92743:11/3/35:58200
Fred Fardbarkle:674-843-1385:20 Parak Lane, DeLuth, MN 23850:4/12/23:780900
Fred Fardbarkle:674-843-1385:20 Parak Lane, DeLuth, MN 23850:4/12/23:780900
Lori Gortz:327-832-5728:3465 Mirlo Street, Peabody, MA 34756:10/2/65:35200
Paco Gutierrez:835-365-1284:454 Easy Street, Decatur, IL 75732:2/28/53:123500
Ephram Hardy:293-259-5395:235 CarltonLane, Joliet, IL 73858:8/12/20:56700
James Ikeda:834-938-8376:23445 Aster Ave., Allentown, NJ 83745:12/1/38:45000
Barbara Kertz:385-573-8326:832 Ponce Drive, Gary, IN 83756:12/1/46:268500
Lesley Kirstin:408-456-1234:4 Harvard Square, Boston, MA 02133:4/22/62:52600
William Kopf:846-836-2837:6937 Ware Road, Milton, PA 93756:9/21/46:43500
Sir Lancelot:837-835-8257:474 Camelot Boulevard, Bath, WY 28356:5/13/69:24500
Jesse Neal:408-233-8971:45 Rose Terrace, San Francisco, CA 92303:2/3/36:25000
Zippy Pinhead:834-823-8319:2356 Bizarro Ave., Farmount, IL 84357:1/1/67:89500
Arthur Putie:923-835-8745:23 Wimp Lane, Kensington, DL 38758:8/31/69:126000
Popeye Sailor:156-454-3322:945 Bluto Street, Anywhere, USA 29358:3/19/35:22350
Jose Santiago:385-898-8357:38 Fife Way, Abilene, TX 39673:1/5/58:95600
Tommy Savage:408-724-0140:1222 Oxbow Court, Sunnyvale, CA 94087:5/19/66:34200
Yukio Takeshida:387-827-1095:13 Uno Lane, Ashville, NC 23556:7/1/29:57000
Vinh Tranh:438-910-7449:8235 Maple Street, Wilmington, VM 29085:9/23/63:68900