Manual Reference Pages - FSDIFF (1)
fsdiff - compare filesystem to transcripts
-1 } [
-IVW ] [
-K command ] [
-c checksum ] [
-o file [
-% ] ]
fsdiff reads a command file (the default name is
command.K) to get a list of transcripts. If the command file is empty, the
transcript list is considered to be the null transcript. Included command files
are read depth first. The first
transcript listed has the lowest precedence, the
next higher, and the last has the highest.
If any special files are
special.T transcript will have the absolute highest precedence.
fsdiff walks the filesystem starting at
path and compares the filesystem to the transcripts. Trailing /s on
path are clipped.
If a transcript is
fsdiff checks all attributes of each file system object
( i.e. file, directory, link, etc ).
If the -c option is given, checksums are also compared.
If a transcript is
fsdiff checks only some of the attributes of the file system objects ( see
TRANSCRIPTS section below ).
There is only one
special.T, and it contains references to files that are host specific, eg.
Any discrepancies are printed on the standard output or, with the -o option,
to a file. The default is to print the differences as edits to the
transcript to make it match the filesystem. If the edit direction
chosen is -T or -A, the differences are printed as edits to the file system
to make it match the transcript. A "+" at the beginning of a line
indicates a file must be downloaded. A "-" indicates the given object (
file, directory, link etc ) must be removed.
A transcript contains a list of filesystem objects, eg. directories,
files, symbolic links etc. Transcripts have the following format:
type path [type specific information]
Type is a single letter: h, l, d, c, b, p, s, D, f, a. Path is the encoded
path, where space is "\b", tab is "\t", newline is "\n", carriage return
is "\r", and
\ is "\\". The type specific information varies.
l path target
h path target
Type l is a symbolic link and h is a hard link. Target is encoded like
path. If a symbolic link is listed in a negative transcript, the target
is not checked.
d path mode uid gid [ finder-information ]
D path mode uid gid
s path mode uid gid
p path mode uid gid
Type d is a directory, D is a door, s is a socket and p is
a named pipe. Mode is a 4 digit octal representation of the
permissions. ( see
) uid and gid are the user and group ids in decimal format.
finder-information is used only on Mac OS X machines running on an
HFS+ formatted drive to store directory finder information. If a
directory is listed in a
negative transcript, mode, uid, gid and, if listed, finder-information will
be checked, but the directory itself will not be read.
b path mode uid gid major minor
c path mode uid gid major minor
Type b is a block special file, c is a character special file.
Major and minor are the major and minor device numbers in decimal.
If a character special file is listed in a
negative transcript, only major and minor device number will be checked.
f path mode uid gid mtime size checksum
a path mode uid gid mtime size checksum
Type f is a reuglar file. Mtime is a decimal number of seconds since 1970 GMT.
Size is the size of the file in bytes. Checksum is the base64 encoded
checksum if enabled, otherwise it is "-". If a file is listed in a
negative transcript, only mode, uid and gid will be checked.
Type a is an
applefile, relevant only on Mac OS X machines running on an HFS+ formatted drive.
has Mac OS metadata, and is stored on the server as an AppleSingle file
Everything that applies to
a regular file applies to an applefile, as well.
Transcripts are sorted alphabetically, depth first, and case
sensitively. This means subdirectories have precedence over files
in the same directory: lexically, "/" has highest precedence. So
even though "." normally comes before "/", and:
would come before:
as capitalized characters are higher in precedence than
lowercase ones. Both of the previous two directories would come
Command files have the following format:
Type is k for command file, p for positive, n for negative, s
for special and x for an exclude pattern. The
argument path is either a command file name, transcript name,
or in the case of type special, a full pathname.
# example command file
Lines beginning with "#" are comments, and are skipped. A comment must
be on a line by itself. Blank lines are also skipped. Exclude lines are
wildcard patterns (see radmind(8) DESCRIPTION) of paths that will
be ignored completely, that is, fsdiff will not care if an object matching
an exclude line is present or absent, and will not print out anything
relating to it. Exclude patterns apply to objects on the filesystem and
paths in transcripts. Only special files are unaffected by excludes. For
help determining which files you are excluding, use the -W flag.
If there is no command file, the transcript used is the null transcript.
fsdiff will print out a difference line for every object in the
filesystem, eg. a filesystem snapshot.
Positive and negative transcripts and special files can be removed from a command file by using minus lines. These lines effectively remove all previously referenced lines that match both the type and path of the minus line. Minus lines begin with a -, followed by some amount of whitespace.
Minus lines only apply to transcripts and special files that have already been read from a command file. If a subsequent line or included command file lists the same transcript or special file, it will be once again included.
For example, if you wanted to remove the special file /etc/fstab from the previous example, you could use this command file:
# example command file
- s /etc/fstab
The minus line in this example would match the special file /etc/fstab, causing it to be effectively removed from the command file.
In this example, fsdiff is used to generate a line for the negative
transcript for /tmp.
example% fsdiff -1 /tmp
d /tmp 1777 0 3
A more complete negative transcript might look like this:
example% vi negative.T
f /etc/passwd 0444 0 3 993477914 482 -
d /proc 0555 0 0
d /tmp 1777 0 3
f /var/adm/lastlog 0444 0 1 993662219 976304 -
f /var/adm/messages 0644 0 0 993661335 94910 -
f /var/adm/sulog 0600 0 0 993662246 422 -
f /var/adm/utmpx 0644 0 2 993662219 2604 -
f /var/adm/wtmpx 0644 4 4 993662219 111600 -
f /var/cron/log 0600 0 0 993627000 2694 -
d /xfn 0555 0 0
percentage done progress output. Requires -o option.
no option ||
fsdiff defaults to -A. Future releases will require an option explicitly.
prints out a single transcript line for the given file. This option can be
used to build
produces an applicable transcript.
produces a creatable transcript.
-c checksum ||
be case insensitive when compairing paths.
-K command ||
specifies a command
file name, by default
-o file ||
specifies an output file, default is the standard output.
displays the version number of
fsdiff, a list of supported checksumming algorithms in descending
order of preference and then exits.
prints a warning to the standard error when encountering an object
matching an exclude pattern.
name of the default command file.
name of the special transcript.
The following exit values are returned:
An error occurred.
|RSUG ||FSDIFF (1) ||December 12, 2010 |
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