http://blog.sina.com.cn/s/blog_45497dfa0100w6r3.html sed样例较多，可以参考
http://blog.sina.com.cn/s/blog_6dc9e4cf0100y40g.html
http://blog.csdn.net/ysdaniel/article/details/7905837
-e,-n,-i,-f g,p,r,w,!,d,l,n s//p,s//g,{;} [root@250-shiyan sed]# cat -n grade.txt 1 M.Tansley 05/99 48311 Green 8 40 44 2 J.Lulu 06/99 48317 green 9 24 26 3 P.Bunny 02/99 48 Yellow 12 35 28 4 J.Troll 07/99 4842 Brown-3 12 26 26 5 L.Tansley 05/99 4712 Brown-2 12 30 28 ###其中$d可以换成任何定址符号，例如逗号，正则，数字之类的 ###删除尾行 [root@250-shiyan sed]# sed '$d' 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 ###删除除green行的其它行，相当于取反。 [root@250-shiyan sed]# sed '/green/!d' grade.txt J.Lulu 06/99 48317 green 9 24 26 ###行后插入 [root@250-shiyan sed]# sed '/green/a\aaaaaaaaaaaa' grade.txt M.Tansley 05/99 48311 Green 8 40 44 J.Lulu 06/99 48317 green 9 24 26 aaaaaaaaaaa 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 ###行前插入 [root@250-shiyan sed]# sed '/green/i\aaaaaaaaaaaa' grade.txt M.Tansley 05/99 48311 Green 8 40 44 aaaaaaaaaaa 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 ###替换行 [root@250-shiyan sed]# sed '/green/c\aaaaaaaaaaaa' grade.txt M.Tansley 05/99 48311 Green 8 40 44 aaaaaaaaaaa 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 [root@250-shiyan sed]# sed '1,3y/99/87/' grade.txt M.Tansley 05/88 48311 Green 8 40 44 J.Lulu 06/88 48317 green 8 24 26 P.Bunny 02/88 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 [root@250-shiyan sed]# sed -n 's/$/&aa/p' grade.txt M.Tansley 05/99 48311 Green 8 40 44aa J.Lulu 06/99 48317 green 9 24 26aa P.Bunny 02/99 48 Yellow 12 35 28aa J.Troll 07/99 4842 Brown-3 12 26 26aa L.Tansley 05/99 4712 Brown-2 12 30 28aa c.oi 13/97 8765 wo 34 88 4aa ###成功匹配并替换后写入aa.txt [root@250-shiyan sed]# sed -n 's/$/&aa/w aa.txt' grade.txt ###在green行后读入aa.txt文件。 [root@250-shiyan sed]# sed '/green/r aa.txt' grade.txt M.Tansley 05/99 48311 Green 8 40 44 J.Lulu 06/99 48317 green 9 24 26 # no packages own wtmpaaaaaaaaaaaaaaaaa and btmpaaaaaaaaaaaaaaaaa -- we'll rotate them here /var/log/wtmpaaaaaaaaaaaaaaaaa { create 0664 root utmpaaaaaaaaaaaaaaaaa /var/log/btmpaaaaaaaaaaaaaaaaa { create 0600 root utmpaaaaaaaaaaaaaaaaa 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 c.oi 13/97 8765 wo 34 88 4 ### [root@250-shiyan sed]# sed -n '/file/,/root/s/file/iiiiiiiiiiiiiiii/p' logrotate.conf # rotate log iiiiiiiiiiiiiiiis weekly # create new (empty) log iiiiiiiiiiiiiiiis after rotating old ones # use date as a suffix of the rotated iiiiiiiiiiiiiiii # uncomment this if you want your log iiiiiiiiiiiiiiiis compressed ###默认只替换匹配到的第一个字符串，除非加g，全局替换。 [root@250-shiyan sed]# sed -n 's/tmp/&aaaaaaaaaaaaaaaaa/p' logrotate.conf # no packages own wtmpaaaaaaaaaaaaaaaaa and btmp -- we'll rotate them here /var/log/wtmpaaaaaaaaaaaaaaaaa { create 0664 root utmpaaaaaaaaaaaaaaaaa /var/log/btmpaaaaaaaaaaaaaaaaa { create 0600 root utmpaaaaaaaaaaaaaaaaa ###全局替换并打印，同时写入aa.txt文件。 [root@250-shiyan sed]# sed -n 's/tmp/&aaaaaaaaaaaaaaaaa/gpw aa.txt' logrotate.conf # no packages own wtmpaaaaaaaaaaaaaaaaa and btmpaaaaaaaaaaaaaaaaa -- we'll rotate them here /var/log/wtmpaaaaaaaaaaaaaaaaa { create 0664 root utmpaaaaaaaaaaaaaaaaa /var/log/btmpaaaaaaaaaaaaaaaaa { create 0600 root utmpaaaaaaaaaaaaaaaaa ###只对下一行操作 [root@250-shiyan sed]# sed '/green/{n;s/12/9999/;}' 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 9999 35 28 J.Troll 07/99 4842 Brown-3 12 26 26 L.Tansley 05/99 4712 Brown-3 12 30 28 E.Wo 02/87 76 bule 34 88 5
###对不连续行执行操作，即指定行的删除
[root@250-shiyan sed]# sed -i '1s/$/#&/;4s/$/#&/' grade.txt
[root@250-shiyan sed]# cat grade.txt
#
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-3 12 30 28
E.Wo 02/87 76 bule 34 88 5
###针对不连续行操作
[root@250-shiyan sed]# sed '1d;3d;5d' grade.txt
J.Lulu 06/99 48317 green 9 24 26
J.Troll 07/99 4842 Brown-3 12 26 26#
E.Wo 02/87 76 bule 34 88 5
###标签函数应用，较难理解。定义标签p1,执行替换操作，当A或B到达3个时。 [root@250-shiyan sed]# cat > file A B [root@250-shiyan sed]# sed '{:p1;/A/s/A/AA/;/B/s/B/BB/;/[AB]{3}/b;b p1;}' file AAA BBB ###列出非打印字符 [root@250-shiyan sed]# sed -n 'l' 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-3 12 30 28$ E.Wo 02/87 76 bule 34 88 5$
###第三行打印完就退出
[root@250-shiyan sed]# sed '3q' logrotate.conf
# see "man logrotate" for details
# rotate log files weekly
weekly
其中：test_sed的内容是： 1234567890 2345678901 3456789012 4567890123 sed 'y/1234567890/ABCDEFGHIJ/' test_sed ABCDEFGHIJ BCDEFGHIJA CDEFGHIJAB DEFGHIJABC 注意变换关系是按两个list的位置对应变换 sed 's/01/Ab/g' test_sed 1234567890 23456789Ab 3456789Ab2 456789Ab23 注意：第一行的0，1没有分别替换为A,b test.txt,内容如下： http://www.5566.cn/produce/20070804112/315613171.shtml http://bj.5566.cn/produce/20070804112/31581217.shtml http://sz.5566.cn/produce/2008090412/31581247.shtml 要求如下：将http://*.5566.cn/替换成/home/html/www.5566.cn # sed -n 's/http.*.cn//home/html/www.5566.cn/gp' test.txt /home/html/www.5566.cn/produce/20070804112/315613171.shtml /home/html/www.5566.cn/produce/20070804112/31581217.shtml /home/html/www.5566.cn/produce/2008090412/31581247.shtml
[root@250-shiyan sed]# sed '3q' logrotate.conf # see "man logrotate" for details # rotate log files weekly weekly -e选项允许在同一行里执行多条命令。 sed -e '1,5d' -e 's/test/check/'example 如例子所示，第一条命令删除1至5行，第二条命令用 check替换test。命令的执行顺序对结果有影响。如果两个命令都是替换命令，那么第一个替换命令将影响第二个替换命令的结果。 一个比-e更好的命令是--expression。它能给sed表达式赋值。 sed --expression='s/test/check/' --expression='/love/d' example
[root@manage ~]# cat qq qqqqqqqqqqqq ddddddddddd wwwwwwwwwwww
在第二行插入换行与uuuu行。 是换行 [root@manage ~]# sed -i '2i\nuuuuuuuuu' qq [root@manage ~]# cat qq qqqqqqqqqqqq uuuuuuuuu ddddddddddd wwwwwwwwwwww
[root@manage ~]# cat qq qqqqqqqqqqqq uuuuuuuuu ddddddddddd wwwwwwwwwwww
在第三行后插入 [root@manage ~]# sed -i '3a\n111111111' qq [root@manage ~]# cat qq qqqqqqqqqqqq uuuuuuuuu ddddddddddd 111111111 wwwwwwwwwwww
将第三行替换 [root@manage ~]# sed -i '3c22' qq [root@manage ~]# cat qq qqqqqqqqqqqq uuuuuuuuu 22 111111111 wwwwwwwwwwww
删除第4行到第6行
[root@manage ~]# sed -i '4,6d' qq
[root@manage ~]# cat qq
qqqqqqqqqqqq
uuuuuuuuu
22
一次插入多行
[root@manage ~]# cat qq
qqqqqqqqqqqq
aaa
bbb
ccc
uuuuuuuuu
22
[root@manage ~]# sed -i '2i 5a ee; bbb fff; ccc oooooo;' qq
[root@manage ~]# cat qq
qqqqqqqqqqqq
5a ee;
bbb fff;
ccc oooooo;
aaa
bbb
ccc
uuuuuuuuu
22