Question

我希望在使用sed命令搜索/替换文件中的文本方面得到您的帮助，具体目的如下。
假设我/tmp/foo有以下内容。

aaa whatever_a1 KEYWORD_1 whatever_a2
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
aaa whatever_aaa1 whatever_aaa2 KEYWORD_1 KEYWORD_2
ddd whatever_d1 whatever_d2 KEYWORD_1

回报应如下：

1。找到/ tmp / foo哪些行包含aaa whatever_a1 KEYWORD_1 whatever_a2＆gt;＆gt;＆gt;将行替换为Hello World

Hello World
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
aaa whatever_aaa1 whatever_aaa2 KEYWORD_1 KEYWORD_2
ddd whatever_d1 whatever_d2 KEYWORD_1

2。 find / tmp / foo哪些行以aaa＆gt;＆gt;＆gt;开头将行替换为Hello World

Hello World
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
Hello World
Hello World
ddd whatever_d1 whatever_d2 KEYWORD_1

3。找到/ tmp / foo哪些行包含aaa和KEYWORD_1＆gt;＆gt;＆gt;将行替换为Hello World

Hello World
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
Hello World
ddd whatever_d1 whatever_d2 KEYWORD_1

4。在开始时找到/ tmp / foo哪些行包含aaa AND KEYWORD_1＆gt;＆gt;＆gt;将行替换为Hello World

Hello World
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
Hello World
ddd whatever_d1 whatever_d2 KEYWORD_1

5。找到/ tmp / foo哪些行包含aaa和KEYWORD_1＆gt;＆gt;＆gt;仅将KEYWORD_1替换为NEW_TEXT

aaa whatever_a1 NEW_TEXT whatever_a2
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
aaa whatever_aaa1 whatever_aaa2 NEW_TEXT KEYWORD_2
ddd whatever_d1 whatever_d2 KEYWORD_1

6。找到/ tmp / foo哪些行包含aaa和KEYWORD_1＆gt;＆gt;＆gt;仅清除KEYWORD_1文字

aaa whatever_a1  whatever_a2
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
aaa whatever_aaa1 whatever_aaa2  KEYWORD_2
ddd whatever_d1 whatever_d2 KEYWORD_1

7。找到/ tmp / foo哪些行包含aaa和KEYWORD_1＆gt;＆gt;＆gt;仅将KEYWORD_1后面的字符串替换为Hello World（将KEYWORD_1保留在行中）

aaa whatever_a1 KEYWORD_1 Hello World
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
aaa whatever_aaa1 whatever_aaa2 KEYWORD_1 Hello World
ddd whatever_d1 whatever_d2 KEYWORD_1

8。找到/ tmp / foo哪些行包含aaa和KEYWORD_1＆gt;＆gt;＆gt;仅将KEYWORD_1的字符串前面替换为Hello World（将KEYWORD_1保留在行中）

Hello World KEYWORD_1 whatever_a2
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
Hello World KEYWORD_1 KEYWORD_2
ddd whatever_d1 whatever_d2 KEYWORD_1

9。找到/ tmp / foo哪些行包含aaa和KEYWORD_1＆gt;＆gt;＆gt;仅将KEYWORD_1后面的字符串替换为Hello World（包括KEYWORD_1文字）

aaa whatever_a1 Hello World
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
aaa whatever_aaa1 whatever_aaa2 Hello World
ddd whatever_d1 whatever_d2 KEYWORD_1

10。找到/ tmp / foo哪些行包含aaa和KEYWORD_1＆gt;＆gt;＆gt;仅将KEYWORD_1的字符串前置替换为Hello World（包括KEYWORD_1文本）

Hello World whatever_a2
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
Hello World KEYWORD_2
ddd whatever_d1 whatever_d2 KEYWORD_1

11。找到/ tmp / foo哪些行包含aaa和KEYWORD_1 AND KEYWORD_2＆gt;＆gt;＆gt;将行替换为Hello World

aaa whatever_a1 KEYWORD_1 whatever_a2
bbb whatever_b1 whatever_b2
ccc whatever_c1 whatever_c2 KEYWORD_1 whatever_c3
aaa whatever_aaa1 whatever_aaa2
Hello World
ddd whatever_d1 whatever_d2 KEYWORD_1

非常感谢，
的Cuong

Answer 1

sed 's/aaa whatever_a1 KEYWORD_1 whatever_a2/Hello World/g' name_of_file.txt

（或者您拥有的任何文件格式）...然后执行＃1然后对特定行进行特定更改，只需执行

sed -e '2s/from_this/to_this/'

其中2表示第2行，或5表示第5行，等等。 Sed可以产生一些非常强大的单线。

Answer 2

你可能对awk更开心，例如：

查找/ tmp / foo哪些行包含aaa whatever_a1 KEYWORD_1 whatever_a2＆gt;＆gt;＆gt;将行替换为Hello World

awk＆＃39; / aaa whatever_a1 KEYWORD_1 whatever_a2 / {$ 0 =＆＃34; Hello World＆＃34; 1＆＃39;的/ tmp /富
找到/ tmp / foo哪些行以aaa＆gt;＆gt;＆gt;开头将行替换为Hello World

awk＆＃39; / ^ aaa / {$ 0 =＆＃34; Hello World＆＃34; 1＆＃39;的/ tmp /富
查找/ tmp / foo哪些行包含aaa AND KEYWORD_1＆gt;＆gt;＆gt;将行替换为Hello World

awk＆＃39; / aaa /＆amp;＆amp; / KEYWORD_1 / {$ 0 =＆＃34; Hello World＆＃34; 1＆＃39;的/ tmp /富
在开头找到/ tmp / foo哪些行包含aaa AND KEYWORD_1＆gt;＆gt;＆gt;将行替换为Hello World

awk＆＃39; / ^ aaa /＆amp;＆amp; / KEYWORD_1 / {$ 0 =＆＃34; Hello World＆＃34; 1＆＃39;的/ tmp /富
查找/ tmp / foo哪些行包含aaa AND KEYWORD_1＆gt;＆gt;＆gt;仅将KEYWORD_1替换为NEW_TEXT

awk＆＃39; / aaa / {sub（/ KEYWORD_1 /，＆＃34; NEW_TEXT＆＃34;）} 1＆＃39;的/ tmp /富
查找/ tmp / foo哪些行包含aaa AND KEYWORD_1＆gt;＆gt;＆gt;仅清除KEYWORD_1文本

awk＆＃39; / aaa / {sub（/ KEYWORD_1 /，＆＃34;＆＃34;）} 1＆＃39;的/ tmp /富
查找/ tmp / foo哪些行包含aaa AND KEYWORD_1＆gt;＆gt;＆gt;将KEYWORD_1后面的字符串替换为仅Hello World（将KEYWORD_1保持在行中）

awk＆＃39; / aaa / {sub（/ KEYWORD_1。* /，＆＃34; KEYWORD_1 Hello World＆＃34;）} 1＆＃39;的/ tmp /富
查找/ tmp / foo哪些行包含aaa AND KEYWORD_1＆gt;＆gt;＆gt;将KEYWORD_1的字符串前面替换为Hello World（将KEYWORD_1保持在行中）

awk＆＃39; / aaa / {sub（/.* KEYWORD_1 /，＆＃34; Hello World KEYWORD_1＆＃34;）} 1＆＃39;的/ tmp /富
查找/ tmp / foo哪些行包含aaa AND KEYWORD_1＆gt;＆gt;＆gt;将KEYWORD_1后面的字符串替换为仅Hello World（包括KEYWORD_1文本）

awk＆＃39; / aaa / {sub（/ KEYWORD_1。* /，＆＃34; Hello World＆＃34;）} 1＆＃39;的/ tmp /富
查找/ tmp / foo哪些行包含aaa AND KEYWORD_1＆gt;＆gt;＆gt;将KEYWORD_1的字符串前面替换为仅Hello World（包括KEYWORD_1文本）

awk＆＃39; / aaa / {sub（/.* KEYWORD_1 /，＆＃34; Hello World＆＃34;）} 1＆＃39;的/ tmp /富
查找/ tmp / foo哪些行包含aaa AND KEYWORD_1 AND KEYWORD_2＆gt;＆gt;＆gt;将行替换为Hello World

awk＆＃39; / aaa /＆amp;＆amp; / KEYWORD_1 /＆amp;＆amp; / KEYWORD_2 / {$ 0 =＆＃34; Hello World＆＃34; 1＆＃39;的/ tmp /富

请注意，如果您不想在替换文本sub(/KEYWORD.*/,"KEYWORD foo")中明确重复搜索到的密钥，则可以将GNU awk用于gensub（）：$0=gensub(/(KEYWORD).*/,"\1 foo","")。此外，如果您不想在另一个字符串的中间找到/替换KEYWORD，您可以使用GNU awk的\<和\>字分隔符来隔离它它

有多种条件的sed

2 个答案: