man mount

...

mount(8) since v2.27 allows to change the mount options by passing the relevant options along with --bind.
For example:

mount --bind,ro foo foo

This feature is not supported by the Linux kernel; it is implemented in userspace by an additional mount(2)
remounting system call. This solution is not atomic.

The alternative (classic) way to create a read-only bind mount is to use the remount operation, for example:

mount --bind olddir newdir
mount -o remount,bind,ro olddir newdir

Note that a read-only bind will create a read-only mountpoint (VFS entry), but the original filesystem
superblock will still be writable, meaning that the olddir will be writable, but the newdir will be read-only.

It's also possible to change nosuid, nodev, noexec, noatime, nodiratime and relatime VFS entry flags by
"remount,bind" operation. It's impossible to change mount options recursively (for example with -o rbind,ro).

@pq 那第二次 mount 就 -o bind,ro
只读

第一行中 fmask=177,dmask=077

root 权限
mount -t ntfs-3g -o uid=root,gid=root,fmask=133,dmask=022 /dev/sdb1 /mnt/data

username 用户
mount -t ntfs-sg -o bind,uid=username,gid=users /mnt/data/dir /home/uid/path

为什么过了 3 年不给换，这个问题我上次手机换电池，特意问了天才吧，人家说可以换的，当然我买了延保服务。

s/你如 /不如 /

配置到你满意的 mac mini，外加个 4k 显示器
说真的，你如直接 iMac

不是新闻说房租多地下降了么

87 双模 茶

阿里终于压倒数字，成为行内口碑第一差

不知道，该主题最后会被移动到哪儿...

看不到...微博需要登陆，然微博账户早成僵尸大军中的一员了。

降薪...不是道德不道德问题，是违法劳动法的问题...hr 就不会说出这样的话。

商务本的屏幕都不咋样，可视角度低，据说是为了防同事偷窥

x230 总体来说还行，当然你得上 ssd