A command-line tool written just for lark: in communications theory the assumption is that a 0-bit is as likely as 1, but how is the situation in filesystems?
usage: countbits.py [-h] [-d DIR [DIR ...]] [-nr] [-s] [--db DBPATH]
[WILDCARD [WILDCARD ...]]
Count the bits (0/1 ratio) in file system files.
positional arguments:
WILDCARD one or more filename patterns to match
optional arguments:
-h, --help show this help message and exit
-d DIR [DIR ...], --directory DIR [DIR ...]
directories to process, filesystem root by default
-nr, --nonrecursive skip subdirectories
-s, --statsonly show accumulated statistics and exit
--db DBPATH cache-database path, by default in program directory.
Use :memory: or empty string for no caching.
My result:
TOTAL ZERO/ONE 58% vs 42% 99,950,872,411 bytes 699,763 files
-------------------------------------------------------------------------------
.dll 63% vs 37% 15,686,096,949 bytes 25,414 (16% size)
.avi 51% vs 49% 12,809,622,256 bytes 180 (13% size)
.bin 61% vs 39% 8,762,136,890 bytes 314 (9% size)
.exe 55% vs 45% 7,777,679,103 bytes 6,413 (8% size)
.db 62% vs 38% 6,963,647,404 bytes 384 (7% size)
<NO EXTENSION> 54% vs 46% 3,935,827,090 bytes 36,492 (4% size)
.jpg 51% vs 49% 2,709,945,949 bytes 15,781 (3% size)
.txt 62% vs 38% 2,652,266,242 bytes 16,982 (3% size)
.pdf 50% vs 50% 2,598,121,519 bytes 1,475 (3% size)
.msi 51% vs 49% 2,353,022,146 bytes 241 (2% size)
.dat 51% vs 49% 1,724,590,136 bytes 3,105 (2% size)
.html 56% vs 44% 1,523,280,768 bytes 41,992 (2% size)
.jar 58% vs 42% 1,384,024,774 bytes 2,817 (1% size)
.xml 61% vs 39% 1,117,032,485 bytes 7,034 (1% size)
.o 69% vs 31% 1,016,419,994 bytes 13,390 (1% size)
..
It depends heavily on file types, but in general 0 is slightly more represented.
Simple convenience wrapper class for SQLite.
Example usage:
db.init(":memory:", "CREATE TABLE test (id INTEGER PRIMARY KEY, val TEXT)")
db.insert("test", val=None)
for i in range(5): db.insert("test", {"val": i})
db.fetch("test", id=1)
db.fetchall("test", order="val", limit=3)
db.update("test", {"val": "new"}, val=None)
db.fetchall("test", val=("IN", range(3)))
db.delete("test", id=5)
db.execute("DROP TABLE test")Command-line tool for detecting duplicate files.
usage: duplicates.py [-h] [-d DIR [DIR ...]] [-t [...]] [-r] [-s]
[WILDCARD [WILDCARD ...]]
List files having the same content.
positional arguments:
WILDCARD one or more filename patterns to match
optional arguments:
-h, --help show this help message and exit
-d DIR [DIR ...], --directory DIR [DIR ...]
directories to process, defaults to working directory
-t [ ...], --type [ ...]
file types to match (image, audio, video)
-r, --recursive process subdirectories
-s, --sizeonly match by file size only
Simple network relay program - allows any number of clients to make a network connection, relays sent data between all clients. Can log data to local db.
usage: relayserver.py [-h] [-p PORT] [--db [DB]] [--verbose] [-t]
A simple network relay server to exchange data between clients.
optional arguments:
-h, --help show this help message and exit
-p PORT, --port PORT TCP port to use, 9000 by default
--db [DB] SQLite database to log traffic to, if any. If DB not
given, defaults to 'relaylog.db' in program directory.
--verbose print activity messages
-t, --test do a test run with dummy clients
Simple serial port reader-writer class using background threads. Needs pyserial.
Example usage:
import serialclient
def callback(data):
print("Incoming serial data: %r." % data)
client = serialclient.SerialClient("/dev/ttyAMA0", 115200, callback)
client.start()
client.send("outgoing data is queued and written in the background")Command-line tool for advancing/delaying movie subtitle timestamps.
usage: shift_subtitles.py SUBTITLEFILE SECONDS
Shifts subtitle timestamps in an SRT file by a given amount.
Command-line tool for making video thumbnails by invoking Media Player Classic. Windows-only.
usage: thumbnails_mpc.py [WILDCARD [WILDCARD ...]]
Creates thumbnails for videos in current directory, using Media Player Classic.
All sorts of handy little utility functions accumulated over the years.
Published in 2015 by Erki Suurjaak.
Released as free open source software under the
Creative Commons CC0 1.0 Universal Public Domain Dedication.
