grep,awk,sed实例
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 29085:9/23/63:689001.显示包含San的行
#grep San datafile #sed -n /San/p datafile #awk /San/ datafile2.显示以J开头的人名所在的行
#grep ^J datafile #sed -n /^J/p datafile #awk /^J/ datafile3.显示700结尾的行
#grep 700$ datafile #sed -n /700$/p datafile #awk /700$/ datafile4.显示不包834的行
#grep -v 834 datafile #sed -n '/834/!p' datafile #awk '$0 !~ /834/' datafile5.显示生日12月的行
#grep :12/ datafile #sed -n '/:12\//p' datafile #sed -n '\#:12/#p' datafile #awk /:12[:/:]/ datafile6.显示电话号码的区号为834的行
#grep :834- datafile #sed -n /:834-/p datafile #awk /:834-/ datafile7.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
#grep '[A-Z][a-z]\{4\}, [A-Z]' datafile
#sed -n '/[A-Z][a-z]\{4\}, [A-Z]/p' datafile
#awk --posix '/[A-Z][a-z]{4}, [A-Z]/' datafile 8.显示姓以K或k开头的行
#grep ^[Kk] datafile9.显示工资为六位数的行,并在前面加行号------------??????有错，请读者帮我纠正-----
#grep -n '\[0-9]\{6\}$\' datafile 10.显示包括Lincoln或lincoln的行,并且grep对大小写不敏
#grep -i [Ll]incoln datafile
文件grade.txt
M.Tansley 05/99 48311 Green 8 40 44
J.Lulu 06/99 48317 green 9 24 26
P.Bunny 02/99 48 Yellow 12 35 28
J.Troll 07/99 4842 Brown-3 12 26 26
L.Tansley 05/99 4712 Brown-2 12 30 28
---打印整个文件
awk '{ print }' grade.txt
awk '{ print $0 }' grade.txt
---打印第1以及第4字段
awk '{ print $1, $4 }' grade.txt ---打印表头
awk 'BEGIN {print "Name Belt\n----------------------"}{ print $1, "\t", $4 }' grade.txt
---下面代码打印$4 包含 Brown 的行
awk '$4 ~ /Brown/ {print}' grade.txt ---非精确匹配
awk '$3 ~ /48/ {print}' grade.txt ---精确匹配
awk '$3 == "48" {print}' grade.txt ---
匹配第一个字段的第三个字符是‘a’
awk '$1 ~ /^...a/' grade.txt--- '或'匹配，使用 ‘|’ ，需使用括号括起来
awk '$0 ~ /(Yellow|Brown)/' grade.txt---
awk '/[Gg]reen/' grade.txt---
awk '$6 < $7 {print $0, "$1 Try better at the next comp"}' grade.txt ---
awk '$4 != "Brown-2" {print $0}' grade.txt ---
awk '$0 !~ /Brown/' grade.txt