sed 行编辑器知识汇总
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sed 是一种行编辑器，一次处理一行内容，处理时把当前处理的行存储在一个临时缓冲区，称为“模式空间”（pattern space），接着用sed命令处理模式空间中的内容，处理完成后把模式空间中的内容打印到屏幕上，完成一行的编辑。
注：默认情况下sed并不做原地修改，不会修改源文件
sed有两种使用方法
sed [options] command file(s) 直接编写处理命令处理
sed [options] -f scriptfile file(s) 使用预先编写好的sed脚本处理
options：
-n 静默模式，不输出内容到屏幕
-e 多点编辑，一次编辑运行多个编辑命令
-f 指定预先写好的sed‘脚本
-r 使用扩展的正则表达式
-i 修改源文件
地址定界
1、不给地址：对全文进行处理
2、单地址：
#：第#行
/pattrern/:被此处模式匹配到的每一行
3、地址范围：
#,#
#,+#
/pat1/,/pat2/
#,/pat1/
4、~ 步进
sed -n ‘1~2p‘ file 显示基数行
sed -n ‘2~2p‘ file 显示偶数行
[[email protected] mage]# cat 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed -n -e ‘1p‘ -e ‘3,4p‘ -e ‘6,+1p‘ 99 1 X 1 = 1 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 [[email protected] mage]# sed -n -e ‘1p‘ -e ‘3,4p‘ -e ‘6,+1p‘ -e ‘/^9/p‘ 99 1 X 1 = 1 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed -i -n -e ‘1p‘ -e ‘3,4p‘ -e ‘6,+1p‘ -e ‘/^9/p‘ 99 [[email protected] mage]# cat 99 1 X 1 = 1 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed -n ‘1~2p‘ 99 1 X 1 = 1 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed -n ‘2~2p‘ 99 2 X 1 = 2 2 X 2 = 4 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64
编辑命令：
d: 删除
cat -n /etc/passwd |sed ‘1,8d‘ 删掉第1-8行
sed ‘/^$/d‘ /etc/fstab 删掉空行
sed ‘/^#/d‘ /etc/fstab 删掉#开头的行
[[email protected] mage]# sed ‘3,9d‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 [[email protected] mage]# sed -e ‘/^1/d‘ -e ‘/^3/d‘ -e ‘/^5/d‘ -e ‘/^7/d‘ -e ‘/^9/d‘ 99 2 X 1 = 2 2 X 2 = 4 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64
p: 显示模式空间中的内容
cat -n /etc/passwd |sed ‘1,8p‘ 显示全文加匹配到的行
cat -n /etc/passwd |sed -n ‘1,8p‘ 仅显示匹配到的行
sed -n ‘#p‘ 与 sed ‘#d‘ 显示结果正好相反
[[email protected] mage]# sed -n ‘1,5p‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 [[email protected] mage]# sed ‘1,5d‘ 99 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81
a: \text 在指定行后面追加一行或多行文本（\n）
sed -n ‘/^UUID/a \new line 1‘ /etc/fstab
sed -n ‘/^UUID/a \new line 1\nnew line 2‘ /etc/fstab
[[email protected] mage]# sed ‘/^5/a newline1‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 newline1 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed ‘/^5/a newline1\nnewline2‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 newline1 newline2 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81
i: \text 在指定行前面插入一行或多行文本（\n）
sed -n ‘/^UUID/i \new line 1‘ /etc/fstab
sed -n ‘/^UUID/i \new line 1\nnew line 2‘ /etc/fstab
[[email protected] mage]# sed ‘/^5/i newline1‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 newline1 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed ‘/^5/i newline1\nnewline2‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 newline1 newline2 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81
c: \text 替换指定行尾一行或多行文本（\n）
sed -n ‘/^UUID/c \new line 1‘ /etc/fstab
sed -n ‘/^UUID/c \new line 1\nnew line 2‘ /etc/fstab
[[email protected] mage]# sed ‘/^5/c newline1‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 newline1 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed ‘/^5/c newline1\nnewline2‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 newline1 newline2 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81
w: 保存模式空间中内容到指定文件
sed -n ‘/^UUID/w file‘ /etc/fstab
[[email protected] mage]# sed -n ‘2~2p‘ 99 2 X 1 = 2 2 X 2 = 4 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 [[email protected] mage]# sed -n ‘2~2w file‘ 99 [[email protected] mage]# cat file 2 X 1 = 2 2 X 2 = 4 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64
=: 显示模式空间中行的行号
sed ‘/^UUID/=‘ /etc/fstab
[[email protected]eISO mage]# sed -n ‘/^5/=‘ 99 5
r: 读取文件到符合匹配条件的每一行后
sed ‘6r file‘ /etc/fstab 读取file内容插入到fstab文件第6行后面
[[email protected] mage]# cat file aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa [[email protected] mage]# sed ‘^6r file‘ 99 sed: -e expression #1, char 1: unknown command: `^‘ [[email protected] mage]# sed ‘6r file‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed ‘/^6/r file‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81
!: 对地址定界取反
cat -n /etc/passwd |sed ‘1,8!d‘ 删掉第1-8行以外的行
[[email protected] mage]# sed ‘1~2d‘ 99 2 X 1 = 2 2 X 2 = 4 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 [[email protected] mage]# sed ‘1~2!d‘ 99 1 X 1 = 1 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81
s///: 替换，支持其他分隔符 [email protected]@@ s###
替换标记：
g: 行内全局替换
i: 忽略字符大小写
[[email protected] ~]# sed -n ‘[email protected]@&[email protected]‘ /etc/passwd root+++++++++++++:x:0:0:root+++++++++++++:/root+++++++++++++:/bin/bash operator:x:11:0:operator:/root+++++++++++++:/sbin/nologin ftp:x:14:50:FTP User:/var/ft+++++++++++++p:/sbin/nologin
[[email protected] mage]# sed ‘s/X/*/‘ 99 1 * 1 = 1 2 * 1 = 2 2 X 2 = 4 3 * 1 = 3 3 X 2 = 6 3 X 3 = 9 4 * 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 5 * 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 6 * 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 * 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 * 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 * 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed ‘s/X/*/g‘ 99 1 * 1 = 1 2 * 1 = 2 2 * 2 = 4 3 * 1 = 3 3 * 2 = 6 3 * 3 = 9 4 * 1 = 4 4 * 2 = 8 4 * 3 = 12 4 * 4 = 16 5 * 1 = 5 5 * 2 = 10 5 * 3 = 15 5 * 4 = 20 5 * 5 = 25 6 * 1 = 6 6 * 2 = 12 6 * 3 = 18 6 * 4 = 24 6 * 5 = 30 6 * 6 = 36 7 * 1 = 7 7 * 2 = 14 7 * 3 = 21 7 * 4 = 28 7 * 5 = 35 7 * 6 = 42 7 * 7 = 49 8 * 1 = 8 8 * 2 = 16 8 * 3 = 24 8 * 4 = 32 8 * 5 = 40 8 * 6 = 48 8 * 7 = 56 8 * 8 = 64 9 * 1 = 9 9 * 2 = 18 9 * 3 = 27 9 * 4 = 36 9 * 5 = 45 9 * 6 = 54 9 * 7 = 63 9 * 8 = 72 9 * 9 = 81 [[email protected] mage]# sed ‘s/x/*/g‘ 99 1 X 1 = 1 2 X 1 = 2 2 X 2 = 4 3 X 1 = 3 3 X 2 = 6 3 X 3 = 9 4 X 1 = 4 4 X 2 = 8 4 X 3 = 12 4 X 4 = 16 5 X 1 = 5 5 X 2 = 10 5 X 3 = 15 5 X 4 = 20 5 X 5 = 25 6 X 1 = 6 6 X 2 = 12 6 X 3 = 18 6 X 4 = 24 6 X 5 = 30 6 X 6 = 36 7 X 1 = 7 7 X 2 = 14 7 X 3 = 21 7 X 4 = 28 7 X 5 = 35 7 X 6 = 42 7 X 7 = 49 8 X 1 = 8 8 X 2 = 16 8 X 3 = 24 8 X 4 = 32 8 X 5 = 40 8 X 6 = 48 8 X 7 = 56 8 X 8 = 64 9 X 1 = 9 9 X 2 = 18 9 X 3 = 27 9 X 4 = 36 9 X 5 = 45 9 X 6 = 54 9 X 7 = 63 9 X 8 = 72 9 X 9 = 81 [[email protected] mage]# sed ‘s/x/*/gi‘ 99 1 * 1 = 1 2 * 1 = 2 2 * 2 = 4 3 * 1 = 3 3 * 2 = 6 3 * 3 = 9 4 * 1 = 4 4 * 2 = 8 4 * 3 = 12 4 * 4 = 16 5 * 1 = 5 5 * 2 = 10 5 * 3 = 15 5 * 4 = 20 5 * 5 = 25 6 * 1 = 6 6 * 2 = 12 6 * 3 = 18 6 * 4 = 24 6 * 5 = 30 6 * 6 = 36 7 * 1 = 7 7 * 2 = 14 7 * 3 = 21 7 * 4 = 28 7 * 5 = 35 7 * 6 = 42 7 * 7 = 49 8 * 1 = 8 8 * 2 = 16 8 * 3 = 24 8 * 4 = 32 8 * 5 = 40 8 * 6 = 48 8 * 7 = 56 8 * 8 = 64 9 * 1 = 9 9 * 2 = 18 9 * 3 = 27 9 * 4 = 36 9 * 5 = 45 9 * 6 = 54 9 * 7 = 63 9 * 8 = 72 9 * 9 = 81 [[email protected] mage]# sed ‘s/x/*/i‘ 99 1 * 1 = 1 2 * 1 = 2 2 X 2 = 4 3 * 1 = 3&nbs以上是关于sed 行编辑器知识汇总的主要内容，如果未能解决你的问题，请参考以下文章