我有以下清单:
➜ cat list.txt
job titles
site reliability engineer
automation
automation engineer
automation architect
integration specialists
我想得到以下内容list2.txt
:
* job titles
* site reliability engineer
* automation
* automation engineer
* automation architect
* integration specialists
我很确定这对 来说是一份好工作sed
。我知道如何获得“线路的开始”
➜ sed 's/^/foo/g' list.txt
foojob titles
foo site reliability engineer
foo automation
foo automation engineer
foo automation architect
foo integration specialists
我想我也许能够得到“行的开头,后跟任意数量的字符,直到单词的开头”,但这不起作用。
➜ sed 's/^.*\</foo/g' list.txt
job titles
site reliability engineer
automation
automation engineer
automation architect
integration specialists
所以现在我想知道,如何替换“行的开头直到单词的开头,除了附加 * 之外的所有内容”?感谢您的帮助 :)
答案1
一种方法是找到第一个非空白字符,并将项目符号放在它前面
sed 's/[^[:blank:]]/* &/' list.txt
* job titles
* site reliability engineer
* automation
* automation engineer
* automation architect
* integration specialists