| 命令 | 功能 |
|---|---|
| a\ | 在当前行后添加一行或多行。多行时除最后一行外，每行末尾需用“\”续行 |
| c\ | 用此符号后的新文本替换当前行中的文本。多行时除最后一行外，每行末尾需用""续行 |
| i\ | 在当前行之前插入文本。多行时除最后一行外，每行末尾需用""续行 |
| d | 删除行 |
| h | 把模式空间里的内容复制到暂存缓冲区 |
| H | 把模式空间里的内容追加到暂存缓冲区 |
| g | 把暂存缓冲区里的内容复制到模式空间，覆盖原有的内容 |
| G | 把暂存缓冲区的内容追加到模式空间里，追加在原有内容的后面 |
| l | 列出非打印字符 |
| p | 打印行 |
| n | 读入下一输入行，并从下一条命令而不是第一条命令开始对其的处理 |
| q | 结束或退出sed |
| r | 从文件中读取输入行 |
| ! | 对所选行以外的所有行应用命令 |
| s | 用一个字符串替换另一个 |
| g | 在行内进行全局替换 |
| w | 将所选的行写入文件 |
| x | 交换暂存缓冲区与模式空间的内容 |
| y | 将字符替换为另一字符（不能对正则表达式使用y命令） |
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ cat log.txt
2 this is a test
3 Are you like awk
This's a test
10 There are orange,apple,mongo
增加a
在第二行后增加新行
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed '2a happy' log.txt
2 this is a test
3 Are you like awk
happy
This's a test
10 There are orange,apple,mongo
在第二行后增加多行 \n换行符
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed '2a happy\nchinese\nnew\nyear' log.txt
2 this is a test
3 Are you like awk
happy
chinese
new
year
This's a test
10 There are orange,apple,mongo
删除d
删除第二行
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed '2d' log.txt
2 this is a test
This's a test
10 There are orange,apple,mongo
删除1-3行
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed '1,3d' log.txt
10 There are orange,apple,mongo
删除第二行后的所有行
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed '2,$d' log.txt
2 this is a test
插入i
在第二行前插入
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed '2i love' log.txt
2 this is a test
love
3 Are you like awk
This's a test
10 There are orange,apple,mongo
替换c
将第二行替换掉
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed '2c lololololo' log.txt
2 this is a test
lololololo
This's a test
10 There are orange,apple,mongo
将2-4行替换掉
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed '2,4c lololololo' log.txt
2 this is a test
lololololo
输出p
输出第三行
-n是仅显示script处理后的结果，常和p一起连用
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed -n '3p' log.txt
This's a test
输出第1-3行
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed -n '1,3p' log.txt
2 this is a test
3 Are you like awk
This's a test
搜寻
搜寻并输出包含“is”的行
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed -n '/is/p' log.txt
2 this is a test
This's a test
搜寻并删除包含“is”的行
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed '/is/d' log.txt
3 Are you like awk
10 There are orange,apple,mongo
搜索并替换is为was(单词精确替换加<>)
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed 's/is/was/g' log.txt
2 thwas was a test
3 Are you like awk
Thwas's a test
10 There are orange,apple,mongo
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed 's/\<is\>/was/g' log.txt
2 this was a test
3 Are you like awk
This's a test
10 There are orange,apple,mongo
多点编辑 -e
删除3-4行，然后将test替换为practice
[yangyang@izuf6btm1dq2w64mt5q889z practice]$ sed -e '3,4d' -e 's/test/practice/g' log.txt
2 this is a practice
3 Are you like awk
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