[KornLee]

本命令涵盖了grep的用法,感兴趣的兄弟们可以练练手(作业?)
关于sed和awk的练习题陆续推出
grep命令练习
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 23875:6/18/68:23400Norma 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 29358:3/19/35:22350Jose 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
1.显示所有包含San的行
2.显示所有以J开始的人名所在的行
3.显示所有以700结尾的行
4.显示所有不包括834的行
5.显示所有生日在December的行
6.显示所有电话号码的区号为498的行
7.显示所有这样的行:它包含一个大写字母,后跟四个小写字母,一个冒号,一个空格,和一
个大写字母
8.显示姓以K或k开头的行
9.显示工资为六位数的行,并在前面加行号
10.显示包括Lincoln或lincoln的行,并且grep对大小写不敏感.

[KornLee]

别的都会,就是第七道题有些绕得慌
不知道兄弟们做得如何?

[kj501]

第七道题应该没有匹配才对。在题目中的冒号后面没空格，都是数字。

[artou]

我来学习一下：

1 cat datafile | grep San
2 cat datafile | grep ^J
3 cat datafile | grep 700$
4 cat datafile | grep -v 834
5 cat datafile | grep [:::]12[:/:]
6 不太明白意思
7 cat datafile | grep [A-Z][a-z][a-z][a-z][a-z][:::][[:space:]][A-Z]
8 cat datafile | grep -i [a-z][[:blank:]]k
9 cat datafile | grep -n ([1-9][0-9][0-9][0-9][0-9][0-9])$
10 cat datafile | egrep -i "Lincoln|lincoln"

[KornLee]

5.javalee//home/javalee/x:grep '\(:\)\(12\)\/' datafile
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

6.javalee//home/javalee/x:cut -f2 -d: datafile | grep ^498 #false,没有那个区号

8.javalee//home/javalee/x>grep -i '[a-z][ ]k' datafile

9.javalee//home/javalee/x>grep -n '[0-9][0-9][0-9][0-9][0-9][0-9]$' datafile

10.javalee//home/javalee/x>grep -i '[L|l]incoln' datafile

[KornLee]

sed命令练习
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
1.把Jon's的名字改成Jonathan.
2.删除头三行
3.显示5-10行
4.删除包含Lane的行.
5.显示所有生日在November-December之间的行
6.把三个星号(***)添加到也Fred开头的行
7.用JOSE HAS RETIRED取代包含Jose的行
8.把Popeye的生日改成11/14/46
9.删除所有空白行
10.写一个脚本,将:
.在第一行之前插入标题PERSONNEL FILE.
.删除以500结尾的工资
.显示文件内容,把姓和名颠倒
.在文件末尾添加THE END

[artou]

1 sed -e 's/Jon/Jonathan/ datafile
2 sed -e '1,3d' datafile
3 sed -n '5,10p' datafile
4 sed -e '/Lane/d' datafile
5 sed -n '/[:::]1[1-2][:/:]/p' datafile
6 sed -e 's/^Fred/***Fred/' datafile
7 sed -e 's/^Jose.*/JOSE HAS RETIRE/g' datafile
8 cat datafile | grep Popeye | sed -e 's/3\/19\/35/11\/14\/46/'
9 sed -e '/^$/d' datafile
10 不会

[KornLee]

创建sed脚本步骤:
1,建立一个脚本
如:

avalee//home/javalee/x>cat sedfile
#this is sedfile
1i\
this is example
$ a\
end

2.用sed -f 执行sedfile脚本

javalee//home/javalee/x>sed -f sedfile datafile
this is example
Steve Blenheim:238-923-7366:95 Latham Lane, Easton, PA 83755:11/12/56:20300
....
Vinh Tranh:438-910-7449:8235 Maple Street, Wilmington, VM 29085:9/23/63:68900
end

[ykwj121]

第8个好象不对，不过我也不会，用比较笨的方式实现：
sed -e '/Popeye/s/:.\/.*\/.*:/:11\/14\/46:/' datafile
sed -e '/Popeye/s/:..\/.*\/.*:/:11\/14\/46:/' datafile
那个月份的一位和两位不知道怎么匹配比较好。

[KornLee]

第八行artou写的没错,

javalee//home/javalee/x>sed -n 's/3\/19\/35/11\/14\/46/p' datafile| grep ^P
Popeye Sailor:156-454-3322:945 Bluto Street, Anywhere, USA 29358:11/14/46:22350

[ykwj121]

呵呵，第8个应该是：
sed -e '/Popeye/s/[1-9]*\/.*\/.*:/:11\/14\/46:/' datafile

我不是说他写法错了，我是说这样做的意义就不大了。
这个题目的意思是把一个文件里面Popeye的生日改了。（事实是这个错误的生日也许没人关心是多少）
而如果匹配了名字后，还要去先看他原来的生日是多少，再匹配来修改就不爽了。
所以应该是找到名字后，自动修改生日那一栏，不管原来生日是什么数字。

而且输出后应该还是一个完整的文件，而不是Popeye的那一行。

[KornLee]

嗯~有道理! 谢谢
那个grep命令有些多余
javalee//home/javalee/x>sed -n 's/3\/19\/35/11\/14\/46/p' datafile
Popeye Sailor:156-454-3322:945 Bluto Street, Anywhere, USA 29358:11/14/46:22350

[ykwj121]

最后一个还没有最后定稿，我分开用了很多临时文件来完成，看起来就很丑:o ，而且sed也只用了一次
但我必须去睡觉了，呵呵，请高手指点吧。

#! /bin/sh
cut -d: -f1 datafile >cut1
cut -d: -f2,3,4,5 datafile >cut2
awk '{print $2" "$1}' cut1 >cut3
paste -d: cut3 cut2 >cut4
sed -e 's/[1-9]*500//' cut4>cut0
awk 'BEGIN {print "\t\tPERSONNEL FILE\n"} {print $0} END {"THE END"}' cut0

[ykwj121]

改了一下，现在脚本变成：

#! /bin/sh
paste -d: `cut -d: -f1 datafile |awk '{print $2" "$1}'>tmp0` `cut -d: -f2,3,4,5
datafile >tmp1` |sed -e 's/[1-9]*500$//'|awk 'BEGIN{print "\t\t\tPERSONNEL FILE"
} {print $0} END{print "\t\t\tTHE END"}'

[artou]

谢谢两位，受益非浅。。。