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1·The dash is longer than the hyphen.

破折号比连字符稍长点。

2·Is there a hyphen between the two words?

这两个词之间有连字符吗？

3·All options should begin with a - (hyphen).

所有选项都应以“-”(连字符)开头。

4·Both stdout and stdin are typically denoted as a hyphen (-).

stdout和stdin通常表示为连字符(-)。

5·Separate words with a hyphen and try not to use too many hyphens.

单独的字词，以连字符和尽量不要使用太多的连字号。

6·The following expressions match all lowercase letters and the hyphen.

下面的表达式匹配所有小写字母和连字符。

7·Zip code, a five- or ten-character string consisting of digits and a hyphen

邮政编码，五或十个字符组成的字符串，包括数字和连字符

8·The hyphen in -bash indicates that the shell instance is a login shell.

bash 中的连字符说明 shell 实例是一个登录 shell。

9·Each byte in a MAC address is separated by either a colon (:) or a hyphen (-).

MAC地址里每个字节都用冒号(：)或连字号(-)分开。

10·O Long run (without a hyphen) is a noun. Long-run (with a hyphen) is an adjective.

“Long run”(没有连字符)是个名词，“Long - run”(由连字符)是个形容词。