大部分类unix程序都使用短横线(-)来表示选项。
Most Unix-like programs use a leading dash (-) to indicate options.
要在域之间使用短横线代替冒号来打印这个文件的内容,命令如下。
To print the file using a dash in place of the colon delimiter between fields, the command is.
由于—的替代文本是一个字符引用,因此它等同于输入一个短横线字符。
Because the replacement text for - is a character reference, it's exactly the same as typing an en dash character.
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