04-25-2016
Quote:
Originally Posted by
robertkwild
i want to make a bash script so it can monitor directory sizes ie if it stays the same size (for a certain time) i want it to run the script
Please clarify what you mean by "size of a directory": A "directory" as such is a data structure in a filesystem and has no "size" that could change.
Do you mean the (sum of the sizes of the) file(s) in a certain directory? Like a directory being filled with files (say, by ftp or similar means) and you want to process the directory only when this process has stopped?
If so: there is the
du command that should do what you want. You can specify the directory and use the "-s" option to make the calculation recurse through the underlying hierarchy. I suggest you first read the man page of
du to see what it can do and then construct a small loop which checks if the reurned value changes or doesn't change. There is no need for something like
watch or whatnot where a simple shell-loop is sufficient.
I hope this helps.
bakunin
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NcdT(1) General Commands Manual NcdT(1)
NAME
ncdt - directory tree printer with extended capabilities
SYNOPSIS
ncdt [-db?] [--dirs] [--bitrate] [--prefix text ] [--help] [ directory [ name ]]
DESCRIPTION
ncdt is a small utility for printing directory trees. It has some additional features not found in tree(1). Additional capabilities are:
- size field for directories displays the summary size of directory subtree instead of the size of the special file (which is somewhat
more useful)
- sizes are displayed in a more readable format (that's a minor improvement, but it helps a little)
- MP3 files are detected; additional info is displayed for them (which is probably the nicest thing about NcdT) The info is displayed
in a compact form, like <2:53 v168JR+> where 2:53 is play time, v (if present) means the file is encoded using VBR, 168 is bitrate
(average bitrate for VBR files), J describes channel encoding (Mono, Stereo, Joint-Stereo, Dual channel), R (if present) means the
file has a RIFF header at the beginning, + (if present) means the file has ID3v2 tag attached - (if present) means there's no ID3
tag at all (none of these means there's only ID3v1 tag present).
NcdT is particularily nice for indexing CDs.
OPTIONS
-d --dirs
Print only directories, omit files. This mode is a rough equivalent of du(1).
-b --bitrate
Print bitrate info for directories. Bitrates are displayed both for ordinary files and directories. If all MP3 files in a given
directory subtree have the same bitrate only one number is printed, if they have various bitrates the range is printed.
--prefix text
Prefix listing with given text. This option is not intended for general use. It might be used by programs using NcdT to index CDsor
doing similar operations to record additional information.
-? --help
Display usage summary.
USAGE
When called without any parameters ncdt displays directory tree for current directory (.).
When called with one parameter ncdt displays directory tree for specified directory.
When called with two parameters ncdt displays directory tree for the directory specified as its first parameter. Second parameter is used
as directory label for the top level directory (instead of directory name from parameter 1).
EXAMPLES
ncdt prints directory tree for the current directory. It will be labeled .
ncdt /usr
prints directory tree of /usr. It will be labeled /usr
ncdt /cdrom 'CD #21'
prints directory tree of /cdrom. It will be labeled CD #21
ncdt -db /cdrom
lists directory sizes, play times and bitrate ranges
SEE ALSO
tree(1), du(1)
BUGS
NcdT uses quite a lot of memory. It's also not very fast, but on a decent CPU it should not be noticeable.
There are no real bugs I'm aware of. I don't think there are any now.
AUTHOR
Pawel Wiecek <coven@vmh.net>
NcdT(1)