☰

使用组权限搜索文件

tag-icon • tag-icon permissions zsh wildcards
使用组权限搜索文件

如果我需要使用组权限搜索文件，我使用以下命令

echo **/*(AIE)

其中 AIE 代表读/写/执行。

对于所有者和组权限，使用的限定符分别是 rwx 和 RWX。
使用 AIE 背后的想法是什么？

答案1

示例的命令参数

echo **/*(AIE)

zsh使用;的全局语法例如，
它不适用于。bash

中的字符()是全局限定符；多个限定符按逻辑组合AND- 也就是说，它们都需要应用。

因此上面的命令显示了该组可读、可写和可执行的文件名。他们拥有由 设定的权限chmod g+rwx。


按权限搜索文件的更便携方法是使用-perm的 测试find，例如：

find -perm -g=rwx

除了独立于 shell 工作之外，语法也更具可读性。


从man zshall：

Glob Qualifiers
    Patterns used for filename generation  may  end  in  a  list  of  qualifiers
    enclosed in parentheses.  The qualifiers specify which filenames that other‐
    wise match the given pattern will be inserted in the argument list.

    If the option BARE_GLOB_QUAL is set, then a trailing set of parentheses con‐
    taining no `|' or `(' characters (or `~' if it is special) is taken as a set
    of glob qualifiers.  A glob subexpression that would normally  be  taken  as
    glob  qualifiers, for example `(^x)', can be forced to be treated as part of
    the glob pattern  by  doubling  the  parentheses,  in  this  case  producing
    `((^x))'.

    If  the  option EXTENDED_GLOB is set, a different syntax for glob qualifiers
    is available, namely `(#qx)' where x is any of the same glob qualifiers used
    in  the  other  format.   The qualifiers must still appear at the end of the
    pattern.  However, with this syntax multiple glob qualifiers may be  chained
    together.   They  are  treated  as  a  logical AND of the individual sets of
    flags. [...]

    [ ... ]

    A      group-readable files (0040)
    I      group-writable files (0020)
    E      group-executable files (0010)
    R      world-readable files (0004)
    W      world-writable files (0002)
    X      world-executable files (0001)

请参阅man zshall | less '+/Glob Qualifiers'或pinfo zsh

相关内容