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dat/ncdu-man
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@ -1,4 +1,4 @@
ncdu(1) ncdu manual ncdu(1)
ncdu(1) ncdu manual ncdu(1)
@ -11,32 +11,33 @@ SYNOPSIS
DESCRIPTION
ncdu (NCurses Disk Usage) is a curses-based version of the well-known 'du', and
provides a fast way to see what directories are using your disk space.
ncdu (NCurses Disk Usage) is a curses-based version of the well-known 'du',
and provides a fast way to see what directories are using your disk space.
OPTIONS
-h Print a small help message
-q Quiet mode. While calculating disk space, ncdu will update the screen 10
times a second by default, this will be decreased to once every 2 seconds
in quiet mode. Use this feature to save bandwidth over remote connec‐
tions.
-q Quiet mode. While calculating disk space, ncdu will update the
screen 10 times a second by default, this will be decreased to once
every 2 seconds in quiet mode. Use this feature to save bandwidth
over remote connections.
-r Read-only mode. This will disable the built-in file deletion feature.
-r Read-only mode. This will disable the built-in file deletion fea‐
ture.
-v Print version.
-x Only count files and directories on the same filesystem as the specified
dir.
-x Only count files and directories on the same filesystem as the spec‐
ified dir.
--exclude PATTERN
Exclude files that match PATTERN. This argument can be added multiple
times to add more patterns.
Exclude files that match PATTERN. This argument can be added multi‐
ple times to add more patterns.
-X FILE, --exclude-from FILE
Exclude files that match any pattern in FILE. Patterns should be sepa‐
rated by a newline.
Exclude files that match any pattern in FILE. Patterns should be
separated by a newline.
KEYS
@ -57,21 +58,21 @@ KEYS
a Toggle between showing disk usage and showing apparent size.
d Delete the selected file or directory. An error message will be shown
when the contents of the directory do not match or do not exist anymore
on the filesystem.
d Delete the selected file or directory. An error message will be
shown when the contents of the directory do not match or do not
exist anymore on the filesystem.
t Toggle dirs before files when sorting.
g Toggle between showing percentage, graph, both, or none. Percentage is
relative to the size of the current directory, graph is relative to the
largest item in the current directory.
g Toggle between showing percentage, graph, both, or none. Percentage
is relative to the size of the current directory, graph is relative
to the largest item in the current directory.
e Show/hide 'hidden' or 'excluded' files and directories. Please note that
even though you can't see the hidden files and directories, they are
still there and they are still included in the directory sizes. If you
suspect that the totals shown at the bottom of the screen are not cor‐
rect, make sure you haven't enabled this option.
e Show/hide 'hidden' or 'excluded' files and directories. Please note
that even though you can't see the hidden files and directories,
they are still there and they are still included in the directory
sizes. If you suspect that the totals shown at the bottom of the
screen are not correct, make sure you haven't enabled this option.
i Show information about the current selected item.
@ -81,44 +82,45 @@ KEYS
HARD LINKS
Every disk usage analysis utility has its own way of (not) counting hard links.
There does not seem to be any universally agreed method of handling hard links,
and it is even inconsistent among different versions of ncdu. This section
explains what each version of ncdu does.
Every disk usage analysis utility has its own way of (not) counting hard
links. There does not seem to be any universally agreed method of handling
hard links, and it is even inconsistent among different versions of ncdu.
This section explains what each version of ncdu does.
ncdu 1.5 and below does not support any hard link detection at all: each link is
considered a separate inode and its size is counted for every link. This means
that the displayed directory sizes are incorrect when analyzing directories
which contain hard links.
ncdu 1.5 and below does not support any hard link detection at all: each
link is considered a separate inode and its size is counted for every link.
This means that the displayed directory sizes are incorrect when analyzing
directories which contain hard links.
ncdu 1.6 has basic hard link detection: When a link to a previously encountered
inode is detected, the link is considered to have a file size of zero bytes.
Its size is not counted again, and the link is indicated in the browser inter‐
face with a 'H' mark. The displayed directory sizes are only correct when all
links to an inode reside within that directory. When this is not the case, the
sizes may or may not be correct, depending on which links were considered as
"duplicate" and which as "original". The indicated size of the topmost directory
(that is, the one specified on the command line upon starting ncdu) is always
correct.
ncdu 1.6 has basic hard link detection: When a link to a previously encoun‐
tered inode is detected, the link is considered to have a file size of zero
bytes. Its size is not counted again, and the link is indicated in the
browser interface with a 'H' mark. The displayed directory sizes are only
correct when all links to an inode reside within that directory. When this
is not the case, the sizes may or may not be correct, depending on which
links were considered as "duplicate" and which as "original". The indicated
size of the topmost directory (that is, the one specified on the command
line upon starting ncdu) is always correct.
ncdu 1.7 has improved hard link detection. Each file that has more than two
links has the "H" mark visible in the browser interface. Each hard link is
counted exactly once for every directory it appears in. The indicated size of
each directory is therefore, correctly, the sum of the sizes of all unique
inodes that can be found in that directory. Note, however, that this may not
always be same as the space that will be reclaimed after deleting the directory,
as some inodes may still be accessible from hard links outside it.
ncdu 1.7 has improved hard link detection. Each file that has more than two
links has the "H" mark visible in the browser interface. Each hard link is
counted exactly once for every directory it appears in. The indicated size
of each directory is therefore, correctly, the sum of the sizes of all
unique inodes that can be found in that directory. Note, however, that this
may not always be same as the space that will be reclaimed after deleting
the directory, as some inodes may still be accessible from hard links out‐
side it.
BUGS
Directory hard links are not supported. They will not be detected as being hard
links, and will thus be scanned and counted multiple times.
Directory hard links are not supported. They will not be detected as being
hard links, and will thus be scanned and counted multiple times.
Some minor glitches may appear when displaying filenames that contain multibyte
or multicolumn characters.
Some minor glitches may appear when displaying filenames that contain
multibyte or multicolumn characters.
Please report any other bugs you may find at the bug tracker, which can be found
on the web site at http://dev.yorhel.nl/ncdu
Please report any other bugs you may find at the bug tracker, which can be
found on the web site at http://dev.yorhel.nl/ncdu
AUTHOR
@ -130,4 +132,4 @@ SEE ALSO
ncdu-1.8 Nov 3, 2011 ncdu(1)
ncdu-1.8 Nov 3, 2011 ncdu(1)