用相同的單詞替換一個詞兩次在UNIX

Question

我怎麼能轉換「一些文字run_id =頭號一些文本」到一個號碼，一個號碼一些文字

之間SOME_TEXT run_id例如我想轉換XYZ run_id = 1到1到1之間的run_id。在這個文本中1不是固定的。

Answer 1

sed 's/run_id = \([[:digit:]]\+\)/run_id between \1 and \1/g' 

使用\(和\)爲捕獲括號。一個 演示

sed 's/run_id = \([[:digit:]]\+\)/run_id between \1 and \1/g' <<END 
some text run_id = 1234 some text 
END 

some text run_id between 1234 and 1234 some text