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1楼 cwking726 2009-12-07 # nl datafile
1 northwest NW Charles Main 3.0 .98 3 34 2 western WE Sharon Gray 5.3 .97 5 23 3 southwest SW Lewis Dalsass 2.7 .8 2 18 4 southern SO Suan Chin 5.1 .95 4 15 5 southeast SE Patricia Hemenway 4.0 .7 4 17 6 eastern EA TB Savage 4.4 .84 5 20 7 northeast NE AM Main Jr. 5.1 .94 3 13 8 north NO Margot Weber 4.5 .89 5 9 9 central CT Ann Stephens 5.7 .94 5 13 # cat datafile northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southern SO Suan Chin 5.1 .95 4 15 southeast SE Patricia Hemenway 4.0 .7 4 17 eastern EA TB Savage 4.4 .84 5 20 northeast NE AM Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 central CT Ann Stephens 5.7 .94 5 13 # more datafile
northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southern SO Suan Chin 5.1 .95 4 15 southeast SE Patricia Hemenway 4.0 .7 4 17 eastern EA TB Savage 4.4 .84 5 20 northeast NE AM Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 central CT Ann Stephens 5.7 .94 5 13 datafile: END
#
# sed '/^eastern/i\
> new line begin\ > ***************' datafile northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southern SO Suan Chin 5.1 .95 4 15 southeast SE Patricia Hemenway 4.0 .7 4 17 new line begin *************** eastern EA TB Savage 4.4 .84 5 20 northeast NE AM Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 central CT Ann Stephens 5.7 .94 5 13 # sed '/eastern/{n;s/AM/Archie/;}' datafile
northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southern SO Suan Chin 5.1 .95 4 15 southeast SE Patricia Hemenway 4.0 .7 4 17 eastern EA TB Savage 4.4 .84 5 20 northeast NE Archie Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 central CT Ann Stephens 5.7 .94 5 13 # sed -e '/northeast/h' -e '$g' datafile
northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southern SO Suan Chin 5.1 .95 4 15 southeast SE Patricia Hemenway 4.0 .7 4 17 eastern EA TB Savage 4.4 .84 5 20 northeast NE AM Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 central CT Ann Stephens 5.7 .94 5 13 northeast NE AM Main Jr. 5.1 .94 3 13 # sed -e '/northeast/h' -e '/CT/{g;}' datafile
northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southern SO Suan Chin 5.1 .95 4 15 southeast SE Patricia Hemenway 4.0 .7 4 17 eastern EA TB Savage 4.4 .84 5 20 northeast NE AM Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 northeast NE AM Main Jr. 5.1 .94 3 13 # sed -e '/northeast/h' -e '/CT/{G;}' datafile
northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southern SO Suan Chin 5.1 .95 4 15 southeast SE Patricia Hemenway 4.0 .7 4 17 eastern EA TB Savage 4.4 .84 5 20 northeast NE AM Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 central CT Ann Stephens 5.7 .94 5 13 northeast NE AM Main Jr. 5.1 .94 3 13 # sed -e '/northeast/h' -e '$g' datafile
northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southern SO Suan Chin 5.1 .95 4 15 southeast SE Patricia Hemenway 4.0 .7 4 17 eastern EA TB Savage 4.4 .84 5 20 northeast NE AM Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 central CT Ann Stephens 5.7 .94 5 13 northeast NE AM Main Jr. 5.1 .94 3 13 # sed -e '/northeast/h' -e '$G' datafile
northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southern SO Suan Chin 5.1 .95 4 15 southeast SE Patricia Hemenway 4.0 .7 4 17 eastern EA TB Savage 4.4 .84 5 20 northeast NE AM Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 central CT Ann Stephens 5.7 .94 5 13 northeast NE AM Main Jr. 5.1 .94 3 13
# nl datafile
northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 23 southwest SW Lewis Dalsass 2.7 .8 2 18 18 southern SO Suan Chin 5.1 .95 4 15 15 southeast SE Patricia Hemenway 4.0 .7 4 17 17
eastern EA TB Savage 4.4 .84 5 20 20 northeast NE AM Main Jr. 5.1 .94 3 13 13 north NO Margot Weber 4.5 .89 5 9 9 central CT Ann Stephens 5.7 .94 5 13 13 #vi sedding2
1 /western/,/southeast/{ 2 /^ *$/d 3 /Suan/{h;d;} } 4 /Ann/g 5 s/TB \(Savage\)/Thomas \1/ 注：2删除空行 4匹配模式Ann，g将暂存缓冲区内的行复制到模式缓冲区里，从而覆盖模式缓冲区的 内容
# sed -f sedding2 datafile
northwest NW Charles Main 3.0 .98 3 34 western WE Sharon Gray 5.3 .97 5 23 southwest SW Lewis Dalsass 2.7 .8 2 18 southeast SE Patricia Hemenway 4.0 .7 4 17 eastern EA Thomas Savage 4.4 .84 5 20 northeast NE AM Main Jr. 5.1 .94 3 13 north NO Margot Weber 4.5 .89 5 9 southern SO Suan Chin 5.1 .95 4 15 # sed 's/...$//' datafile
northwest NW Charles Main 3.0 .98 3 western WE Sharon Gray 5.3 .97 5 southwest SW Lewis Dalsass 2.7 .8 2
southern SO Suan Chin 5.1 .95 4 southeast SE Patricia Hemenway 4.0 .7 4 eastern EA TB Savage 4.4 .84 5 northeast NE AM Main Jr. 5.1 .94 3 north NO Margot Weber 4.5 .89 central CT Ann Stephens 5.7 .94 5 # sed 's/....//' datafile
hwest NW Charles Main 3.0 .98 3 34 ern WE Sharon Gray 5.3 .97 5 23 hwest SW Lewis Dalsass 2.7 .8 2 18
hern SO Suan Chin 5.1 .95 4 15 heast SE Patricia Hemenway 4.0 .7 4 17 ern EA TB Savage 4.4 .84 5 20 heast NE AM Main Jr. 5.1 .94 3 13 h NO Margot Weber 4.5 .89 5 9 ral CT Ann Stephens 5.7 .94 5 13 # sed 's/^....//' datafile
hwest NW Charles Main 3.0 .98 3 34 ern WE Sharon Gray 5.3 .97 5 23 hwest SW Lewis Dalsass 2.7 .8 2 18
hern SO Suan Chin 5.1 .95 4 15 heast SE Patricia Hemenway 4.0 .7 4 17 ern EA TB Savage 4.4 .84 5 20 heast NE AM Main Jr. 5.1 .94 3 13 h NO Margot Weber 4.5 .89 5 9 ral CT Ann Stephens 5.7 .94 5 13
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