date: 2020-10-20T09:26:21+08:00 # 创建日期 author: "Rustle Karl" # 作者

文章

title: "umount 卸载文件系统" # 文章标题

description: "文章描述"

url: "posts/linux/tools/standard/umount" # 设置网页永久链接 tags: [ "linux", "cmd" ] # 标签 series: [ "Linux 学习笔记" ] # 系列 categories: [ "学习笔记" ] # 分类

weight: 20 # 排序优先级 chapter: false # 设置为章节

卸载文件系统

umount [-hV]
umount -a [options]
umount [options] <source> | <directory>

参数	作用
-a, --all	unmount all filesystems
-A, --all-targets	unmount all mountpoints for the given device in the current namespace
-c, --no-canonicalize	don't canonicalize paths
-d, --detach-loop	if mounted loop device, also free this loop device
--fake	dry run ; skip the umount(2) syscall
-f, --force	force unmount (in case of an unreachable NFS system)
-i, --internal-only	don't call the umount.`<type>` helpers
-n, --no-mtab	don't write to /etc/mtab
-l, --lazy	detach the filesystem now, clean up things later
-O, --test-opts `<list>`	limit the set of filesystems (use with -a)
-R, --recursive	recursively unmount a target with all its children
-r, --read-only	in case unmounting fails, try to remount read-only
-t, --types `<list>`	limit the set of filesystem types
-v, --verbose	say what is being done
-h, --help	display this help
-V, --version	display version

umount /dev/sdb2