Commands for File System Administration
Most commands for file system administration have both a generic component and a file
system–specific component. Whenever possible, you should use the generic commands, which call the
file system–specific component. The following table lists the generic commands for file system
administration. These commands are located in the /usr/sbin directory.
Table 17-1 Generic Commands for File System Administration
Command |
Description |
Man Page |
|---|
clri |
Clears inodes |
clri(1M) |
df |
Reports the number
of free disk blocks and files |
df(1M) |
ff |
Lists file names and statistics for a
file system |
ff(1M) |
fsck |
Checks the integrity of a file system and repairs any damage
found |
fsck(1M) |
fsdb |
Debugs the file system |
fsdb(1M) |
fstyp |
Determines the file system type |
fstyp(1M) |
labelit |
Lists or provides labels for
file systems when they are copied to tape (for use only by the
volcopy command) |
labelit(1M) |
mkfs |
Creates a new file system |
mkfs(1M) |
mount |
Mounts local and remote file systems |
mount(1M) |
mountall |
Mounts all
file systems that are specified in the virtual file system table (/etc/vfstab) |
mountall(1M) |
ncheck |
Generates
a list of path names with their inode numbers |
ncheck(1M) |
umount |
Unmounts local and remote
file systems |
mount(1M) |
umountall |
Unmounts all file systems that are specified in the virtual file
system table (/etc/vfstab) |
mountall(1M) |
volcopy |
Creates an image copy of a file system |
volcopy(1M) |
How File System Commands Determine the File System Type
The generic file system commands determine the file system type by following this
sequence:
From the -F option, if supplied.
By matching a special device with an entry in the /etc/vfstab file (if the special device is supplied). For example, fsck first looks for a match against the fsck device field. If no match is found, the command then checks the special device field.
By using the default specified in the /etc/default/fs file for local file systems and in the /etc/dfs/fstypes file for remote file systems.
Manual Pages for Generic and Specific File System Commands
Both the generic commands and specific commands have manual pages in the man pages section 1M: System Administration Commands.
The manual pages for the generic file system commands provide information about generic
command options only. The manual page for a specific file system command has
information about options for that file system. To look at a manual page
for a specific file system, append an underscore and the abbreviation for the
file system type to the generic command name. For example, to see the
specific manual page for mounting a UFS file system, type the following:
$ man mount_ufs
