As described in ISO POSIX (2003), all files in the system are organized in a directed graph, known as the file hierarchy, rooted at /. These files can be spread out over several underlying devices. The mount command shall attach the file system found on some underlying device to the file hierarchy.
invoke verbose mode. The mount command shall provide diagnostic
mount all filesystems (of the given types) mentioned in /etc/fstab.
If the -a option is also present, fork a new incarnation of mount for each device to be mounted. This will do the mounts on different devices or different NFS servers in parallel.
cause everything to be done except for the actual system call; if it's not obvious, this `fakes' mounting the file system.
mount without writing in /etc/mtab. This is necessary for example when /etc is on a read-only file system.
ignore mount options not supported by a filesystem type. Not all filesystems support this option.
mount the file system read-only. A synonym is -o ro.
mount the file system read/write. (default) A synonym is -o rw.
If the file /proc/partitions is supported, mount the partition that has the specified label.
If the file /proc/partitions is supported, mount the partition that has the specified uuid.
indicate a file system type of vfstype.
More than one type may be specified in a comma separated list. The list of file system types can be prefixed with no to specify the file system types on which no action should be taken.
options are specified with a -o flag followed by a comma-separated string of options. Some of these options are only useful when they appear in the /etc/fstab file. The following options apply to any file system that is being mounted:
The behaviors specified in this section are expected to disappear from a future version of the LSB; applications should only use the non-LSB-deprecated behaviors.
output version and exit.