>>>cat datafile
Steve Blenheim:238-923-7366:95 Lantham 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:322-222-222:3332 PIne Street,Dearborn,mi 2334:5/53/341:3344
Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Btty Boop:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
任务1：将Boop替换为BOOP：
>>> sed -e 's/Boop/BOOP/g' datafile
Steve Blenheim:238-923-7366:95 Lantham 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:322-222-222:3332 PIne Street,Dearborn,mi 2334:5/53/341:3344
Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Btty BOOP:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
任务2：删除前3行：
>>> sed -e '1,3d' datafile
Norma Corder:322-222-222:3332 PIne Street,Dearborn,mi 2334:5/53/341:3344
Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Btty Boop:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
任务3：显示1-3行：
>>> sed -n -e '1,3p' datafile
Steve Blenheim:238-923-7366:95 Lantham 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
任务4：删除包含Boop行：
>>> sed -e '/Boop/d' datafile
Steve Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Igor Chevsky:385-375-8395:3567 Populus Place,Caldwell,NJ 23875:6/18/68:23400
Norma Corder:322-222-222:3332 PIne Street,Dearborn,mi 2334:5/53/341:3344
Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
任务5：显示生日在5-6月之间的行：
ps：每行末为生日字段，如11/12/56为56年11月12日
>>> sed -n -e '/[:::][5,6][:/:]/p' datafile
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:322-222-222:3332 PIne Street,Dearborn,mi 2334:5/53/341:3344
Btty Boop:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
## ps :sed中特殊字符用[::]包起来，如特殊字符\则是用[:\:]表示
也可用以下命令：
>>> sed -n -e '/:6[^0-9]/,/:5[^0-9]/p' datafile
任务6：把三个星号（***）添加到以Steve开头的行：
>>> sed -e 's/^Steve/***Steve/g' datafile
***Steve Blenheim:238-923-7366:95 Lantham 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:322-222-222:3332 PIne Street,Dearborn,mi 2334:5/53/341:3344
Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Btty Boop:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
任务7：用C-O-R-D-E-R取代包含Corder的行：
>>> sed -e 's/^.*Corder.*$/C-O-R-D-E-R/g' datafile
Steve Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Betty Boop:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
Igor Chevsky:385-375-8395:3567 Populus Place,Caldwell,NJ 23875:6/18/68:23400
C-O-R-D-E-R
Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Btty Boop:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
ps:也可用以下方法：
>>> sed -e '/Corder/s/.*/C-O-R-D-E-R/g' datafile
任务8：将Steve Blenheim的生日改为11/11/11：
>>> sed -e '/Steve Blenheim/s/:[0-9]*\/.*\/.*:/:11\/11\/11:/' datafile
Steve Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/11/11:20300
Betty Boop:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
Igor Chevsky:385-375-8395:3567 Populus Place,Caldwell,NJ 23875:6/18/68:23400
Norma Corder:322-222-222:3332 PIne Street,Dearborn,mi 2334:5/53/341:3344
Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Btty Boop:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
任务9：删除所有空白行：
>>> sed -e '/^$/d' datafile
任务10：写一个脚本，在第一行之前插入Begin；在文件末尾添加The end；删除以3344结尾的
记录；显示文件内容，把姓和名颠倒：
>>> cat handle.sed
/3344/d
1iBegin
$aThe end
s/^\([a-zA-Z]\+\) \([a-zA-Z]\+\)\(.*\)/\2 \1\3/g
>>> sed -f handle.sed datafile
Begin
Blenheim Steve:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Boop Betty:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
Chevsky Igor:385-375-8395:3567 Populus Place,Caldwell,NJ 23875:6/18/68:23400
Blenheim:238-923-7366:95 Lantham Lane,Easton,PA 83755:11/12/56:20300
Boop Btty:245-836-8357:635 Cutesy Lane,Hollywood,CA 91464:6/23/23:14500
The end
