System information

An Introduction to Shells in General
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here is provided "as is", and there is no guarantee that any of the examples shown will work in your
particular application.
Revision 1.02 October 2002 55
5.3.31 mount
Syntax: mount [flags] device directory [-o options,more-options]
Mount a filesystem.
Flags:
-a: Mount all filesystems in fstab.
-f: "Fake" Add entry to mount table but don't mount it.
-n: Don't write a mount table entry.
-o option: One of many filesystem options, listed below.
-r: Mount the filesystem read-only.
-t fs-type: Specify the filesystem type.
-w: Mount for reading and writing (default).
Options for use with the "-o" flag:
async/sync: Writes are asynchronous / synchronous.
atime/noatime: Enable / disable updates to inode access times.
dev/nodev: Allow use of special device files / disallow them.
exec/noexec: Allow use of executable files / disallow them.
loop: Mounts a file via loop device.
suid/nosuid: Allow set-user-id-root programs / disallow them.
remount: Re-mount 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. see the
written documentation for those.
Example:
$ mount
/dev/hda3 on / type minix (rw)
proc on /proc type proc (rw)
devpts on /dev/pts type devpts (rw)
$ mount /dev/fd0 /mnt -t msdos -o ro
$ mount /tmp/diskimage /opt -t ext2 -o loop
5.3.32 mv
Syntax: mv SOURCE DEST or: mv SOURCE... DIRECTORY
Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.
Example:
$ mv /tmp/foo /bin/bar
5.3.33 poweroff
Syntax: poweroff
Halt the system and request that the kernel shut off the power.