Bash/sh-&&之间的差异和 ; [英] Bash/sh - difference between && and ;

问题描述

我通常使用;在一行中组合多个命令，但是有些人更喜欢&&.有什么区别吗?例如，cd ~; cd -和cd ~ && cd -似乎是一样的东西.哪个版本更便于携带，例如会被bash子集(例如Android的shell左右)支持吗?

I normally use ; to combine more than one command in a line, but some people prefer &&. Is there any difference? For example, cd ~; cd - and cd ~ && cd - seems to make the same thing. What version is more portable, e.g. will be supported by a bash-subset like Android's shell or so?

推荐答案

如果先前的命令失败并显示;，则第二个命令将运行.

If previous command failed with ; the second one will run.

但是使用&&时，第二个将无法运行.

But with && the second one will not run.

这是操作之间的惰性"逻辑"AND"操作数.

This is a "lazy" logical "AND" operand between operations.

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