Linux 文件系统属性更改

/usr/local/bin/apps # df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/mtdblock2 9828 9828 0 100% /
mdev 20948 0 20948 0% /dev
tmpfs 20948 28 20920 0% /tmp
tmpfs 1024 80 944 8% /var
/dev/nftl_dat0 39664 8036 29580 21% /media/localdata
/dev/nftl_usr0 148768 135936 5152 96% /usr
/dev/nftl0 1570816 194372 1376444 12% /media/usrdata

mount: invalid option -- h
BusyBox v1.8.2 (2009-04-17 16:52:19 CST) multi-call binary

Usage: mount [flags] DEVICE NODE [-o options,more-options]

Mount a filesystem. Filesystem autodetection requires /proc be mounted.

Options:
-a Mount all filesystems in fstab
-r Read-only mount
-t fs-type Filesystem type
-w Read-write mount (default)

-o option:
loop Ignored (loop devices are autodetected)
[a]sync Writes are asynchronous / synchronous
[no]atime Disable / enable updates to inode access times
[no]diratime Disable / enable atime updates to directories
[no]dev Allow use of special device files / disallow them
[no]exec Allow use of executable files / disallow them
[no]suid Allow set-user-id-root programs / disallow them
[r]shared Convert [recursively] to a shared subtree
[r]slave Convert [recursively] to a slave subtree
[r]private Convert [recursively] to a private subtree
[un]bindable Make mount point [un]able to be bind mounted
bind Bind a directory to an additional location
move Relocate an existing mount point
remount Remount a mounted filesystem, changing its flags
ro/rw Mount for read-only / read-write

There are EVEN MORE flags that are specific to each filesystem
You'll have to see the written documentation for those filesystems

文件系统读写：mount -o rw,remount /dev/nftl_usr0

文件系统只读：mount -o ro,remount /dev/nftl_usr0