NAME(名稱)

access - 確定文件是否可以存取訪問  

SYNOPSIS(總覽)

access -mode file  

DESCRIPTION (描述)

如果 file 可以在特定模式下存取訪問,那么成功退出. mode 為 rwx 中的一個或多個字符, 這里的 r 表示可讀, w 表示可寫,而 x 表示可執(zhí)行.

access 和 test 之間的區(qū)別在于后者查看權(quán)限位,而前者使用 access(2) 系統(tǒng)調(diào)用進行檢查.當文件系統(tǒng)以只讀方式被掛載時,兩者就有區(qū)別了.

OPTIONS(選項)

access 接受以下附加的選項:

--help

打印幫助信息并退出.

--version

打印版本信息并退出. 

SEE ALSO(另見)

access(2)

#p#

NAME

access - determine whether a file can be accessed  

SYNOPSIS

access -mode file  

DESCRIPTION

Exit successfully if file can be accessed with the specified mode. mode is one or more letters of rwx, where r is for readable, w is for writable, and x is for executable.

The difference between access and test is that the latter looks at the permission bits, while the former checks using the access(2) system call. This makes a difference when file systems have been mounted read-only.  

OPTIONS

access accepts the following additional options:

--help

Print help message and exit.

--version

Print version information and exit.

SEE ALSO

access(2)