在使用sed的特定行之前插入多行文本

Question

我想在特定行之前插入幾行文本，但在嘗試添加新行字符時仍然出現sed錯誤。我的命令看起來像：

sed -r -i '/Line to insert after/ i Line one to insert \\ 
    second new line to insert \\ 
    third new line to insert' /etc/directory/somefile.txt 

所報告的錯誤是：

sed: -e expression #1, char 77: unterminated `s' command 

我嘗試使用\n，\\（如上例），無字可言，只是移動第二行到下一行。我也試過類似的東西：

sed -r -i -e '/Line to insert after/ i Line one to insert' 
    -e 'second new line to insert' 
    -e 'third new line to insert' /etc/directory/somefile.txt 

編輯！：道歉，我希望在現有的文本之前插入，而不是之後！

Answer 1

這應該工作：

sed -i '/Line to insert after/ i Line one to insert \ 
second new line to insert \ 
third new line to insert' file 

Answer 2

sed -i '/Line to insert after/ i\ 
Line one to insert\ 
second new line to insert\ 
third new line to insert' /etc/directory/somefile.txt 

Answer 3

這可能會爲你工作（GNU sed的&擊）：

sed -i $'/Line to insert after/a\line1\\nline2\\nline3' file 

Answer 4

對於除個別線路簡單替代其他任何東西，用awk代替爲了簡單，清晰，魯棒性等等等等。

要插入之前行：

awk ' 
{ print } 
/Line to insert after/ { 
    print "Line one to insert" 
    print "second new line to insert" 
    print "third new line to insert" 
} 
' /etc/directory/somefile.txt 

Answer 5

這LL從第一行。對於如作品：如果你想從一個文件中的第三行插入，替換「1I

awk ' 
/Line to insert before/ { 
    print "Line one to insert" 
    print "second new line to insert" 
    print "third new line to insert" 
} 
{ print } 
' /etc/directory/somefile.txt 

要在行後面插入「到」3i「。

sed -i '1i line1'\\n'line2'\\n'line3' 1.txt 

cat 1.txt 

line1 
line2 
line3 
Hai 

Answer 6

符合POSIX標準，並在OS X上運行，我用下面的（單引號線和空行是用於演示）：

sed -i "" "/[pattern]/i\\ 
line 1\\ 
line 2\\ 
\'line 3 with single quotes\` 
\\ 
" <filename>