请问：cp不提示，直接覆盖参数是啥？

warriorys

高人啊！屏蔽alias !学习！

1, unalise
2,\cmd 就是在 shell 裡所輸入的 cmd 不會替換為 alias。

icyfish28

回复 11# 局内人


    From "Bash Reference Manual":

6.6 Aliases
Aliases allow a string to be substituted for a word when it is used as the first word of a simple command. The shell maintains a list of aliases that may be set and unset with the alias and unalias builtin commands.

The first word of each simple command, if unquoted, is checked to see if it has an alias. If so, that word is replaced by the text of the alias. The characters ‘/’, ‘$’, ‘`’, ‘=’ and any of the shell metacharacters or quoting characters listed above may not appear in an alias name. The replacement text may contain any valid shell input, including shell metacharacters. The first word of the replacement text is tested for aliases, but a word that is identical to an alias being expanded is not expanded a second time. This means that one may alias ls to "ls -F", for instance, and Bash does not try to recursively expand the replacement text. If the last character of the alias value is a space or tab character, then the next command word following the alias is also checked for alias expansion.

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maxli1

回复 8# 網中人


8楼强呀，  正解。


   

fjnphn

网大大太强悍了

525478495

   学习了。 膜拜高手！