grep 文本文件中的所有 .js url

Question

有一个文件a.txt

https://site.tld/anythingjs.html
https://site.tld/b.txt
https://site.tld/a.js
https://site.tld/b.js?query=1
http://site.tld/c.js
http://site.tld/d.js

我想 grep 所有 .js 扩展 URL，所以我尝试了这个，但它没有显示 https://site.tld/b.js?query=1

$ cat a.txt | grep '.js$'

https://site.tld/a.js
http://site.tld/c.js
http://site.tld/d.js

当我尝试这个时，它还 select js 来自任何地方的名字

$ cat a.txt | grep '.js$*'

https://site.tld/anythingjs.html
https://site.tld/a.js
https://site.tld/b.js?query=1
http://site.tld/c.js
http://site.tld/d.js

提前致谢

Answer 1

只是逃离 .用 \

$ cat a.txt
https://site.tld/anythingjs.html
https://site.tld/b.txt
https://site.tld/a.js
https://site.tld/b.js?query=1
http://site.tld/c.js
http://site.tld/d.js

$ grep '\.js' a.txt
https://site.tld/a.js
https://site.tld/b.js?query=1
http://site.tld/c.js
http://site.tld/d.js

grep 文本文件中的所有 .js url

grep all .js urls from text file

linux

bash

terminal

grep

command