#Bash 的 mountpoint 命令

mountpoint [OPTION]... FILE

功能

判断文件是否是挂载点。

类型

可执行文件（/usr/bin/mountpoint），属于 util-linux。

参数

OPTION 选项：
- -d, --fs-devno - 查看挂载点对应设备的 主设备号:次设备号
- -q, --quiet - 不打印任何内容，仅通过返回值返回
- --nofollow - 检测符号链接本身，而非其链接的文件
- -x, --devno - 判断文件是否是块设备，如果是则查看该块设备的 主设备号:次设备号
- -h, --help - 显示帮助
- -V, --version - 显示版本
FILE - 要判断的文件

返回值

0 - 是挂载点（或块设备）
1 - 调用失败
32 - 不是挂载点（或块设备）

#示例

$ mountpoint /                  # 查看 / 是否是挂载点
/ is a mountpoint
$ mountpoint /home              # 查看 /home 是否是挂载点
/home is not a mountpoint
$ mountpoint /run               # 查看 /run 是否是挂载点
/run is a mountpoint
$ mountpoint /dev/nvme0n1p1     # 查看 /dev/nvme0n1p1 是否是挂载点
/dev/nvme0n1p1 is not a mountpoint
$ mountpoint /dev/nvme0n1p1 -x  # 查看 /dev/nvme0n1p1 是否是块设备，打印设备号
259:1

#推荐阅读

mountpoint(1) — Linux manual page

#手册

MOUNTPOINT(1)                    User Commands                   MOUNTPOINT(1)

NAME
       mountpoint - see if a directory or file is a mountpoint

SYNOPSIS
       mountpoint [-d|-q] directory|file

       mountpoint -x device

DESCRIPTION
       mountpoint checks whether the given directory or file is mentioned in
       the /proc/self/mountinfo file.

OPTIONS
       -d, --fs-devno
           Show the major/minor numbers of the device that is mounted on the
           given directory.

       -q, --quiet
           Be quiet - don’t print anything.

       --nofollow
           Do not follow symbolic link if it the last element of the directory
           path.

       -x, --devno
           Show the major/minor numbers of the given blockdevice on standard
           output.

       -h, --help
           Display help text and exit.

       -V, --version
           Print version and exit.

EXIT STATUS
       mountpoint has the following exit status values:

       0
           success; the directory is a mountpoint, or device is block device
           on --devno

       1
           failure; incorrect invocation, permissions or system error

       32
           failure; the directory is not a mountpoint, or device is not a
           block device on --devno

ENVIRONMENT
       LIBMOUNT_DEBUG=all
           enables libmount debug output.

NOTES
       The util-linux mountpoint implementation was written from scratch for
       libmount. The original version for sysvinit suite was written by Miquel
       van Smoorenburg.

AUTHORS
       Karel Zak <kzak@redhat.com>

SEE ALSO
       mount(8)

REPORTING BUGS
       For bug reports, use the issue tracker at
       https://github.com/util-linux/util-linux/issues.

AVAILABILITY
       The mountpoint command is part of the util-linux package which can be
       downloaded from Linux Kernel Archive
       <https://www.kernel.org/pub/linux/utils/util-linux/>.

util-linux 2.39.3                 2023-10-23                     MOUNTPOINT(1)

#Bash 的 mountpoint 命令

#示例

#推荐阅读

#手册

显示