sed 递归替换 [英] Sed substitute recursively

问题描述

echo ddayaynightday |sed 's/day//g'

它结束了daynight

有没有办法让它替代直到不再匹配?

Is there anyway to make it substitute until no more match ?

推荐答案

我的首选形式，对于这种情况:

My preferred form, for this case:

echo ddayaynightday | sed -e ':loop' -e 's/day//g' -e 't loop'

这和其他人的一样，除了它使用多个 -e 命令来组成三行并使用 t 构造——这意味着如果你成功替换了分支"——迭代.

This is the same as everyone else's, except that it uses multiple -e commands to make the three lines and uses the t construct—which means "branch if you did a successful substitution"—to iterate.

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