06-28-2017
Script to compare files in 2 folders and delete the large file
Hello, my first thread here.
I've been searching and fiddling around for about a week and I cannot find a solution.
I have been converting all of my home videos to HEVC and sometimes the files end up smaller and sometimes they don't. I am currently comparing all the video files manually and it takes up quite a bit of time.
I was wondering if there is a script that can check the 2 folders and delete the larger of the 2 files and keep the smaller one.
I have the original videos in one directory and the converted in another directory. The filenames are always the same but sometimes the extensions are different.
eg. the destination output file will always have the .mkv extension but the original may have .avi, .mpg, mp4 etc. But the filenames themselves will always be the same.
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LEARN ABOUT CENTOS
iowatcher
iowatcher(1) General Commands Manual iowatcher(1)
NAME
iowatcher - Create visualizations from blktrace results
SYNOPSIS
iowatcher OPTIONS...
DESCRIPTION
iowatcher graphs the results of a blktrace run. It can graph the result of an existing blktrace, start a new blktrace, or start a new blk-
trace and a benchmark run. It can then create an image or movie of the IO from a given trace. iowatcher can produce either SVG files or
movies in mp4 format (with ffmpeg) or ogg format (with png2theora).
OPTIONS
--help Print a brief usage summary.
-d, --device <device>
Controls which device you are tracing. You can only trace one device at a time for now. It is sent directly to blktrace, and only
needed when you are making a new trace.
-D, --blktrace-destination <destination>
Destination for blktrace.
-p, --prog <program>
Program to run while blktrace is run.
-K, --keep-movie-svgs
Keep the SVG files generated for movie mode.
-t, --trace <file|directory>
Controls the name of the blktrace file. iowatcher uses a dump from blkparse, so -t tries to guess the name of the corresponding per
CPU blktrace data files if the dump file doesn't already exist. If you want more than one trace in a given graph, you can specify
-t more than once. If a directory is specified, iowatcher will use the name of the directory as the base name of the dump file and
all trace files found inside the directory will be processed.
-l, --label <label>
Sets a label in the graph for a trace file. The labels are added in the same order the trace files are added.
-m, --movie [spindle|rect]
Create a movie. The file format depends on the extension used in the -o filename.* option. If you specify an .ogv or .ogg exten-
sion, the result will be Ogg Theora video, if png2theora is available. If you use an .mp4 extension, the result will be an mp4
video if ffmpeg is available. You can use any other extension, but the end result will be an mp4. You can use --movie=spindle or
--movie=rect, which changes the style of the IO mapping.
-T, --title <title>
Set a title to be placed at the top of the graph.
-o, --output <file>
Output filename (default: trace.svg).
-r, --rolling <seconds>
Control the duration for the rolling average. iowatcher tries to smooth out bumpy graphs by averaging the current second with sec-
onds from the past. Larger numbers here give you flatter graphs.
-h, --height <height>
Set the height of each graph
-w, --width <width>
Set the width of each graph
-c, --columns <columns>
Numbers of columns in graph output
-x, --xzoom <min:max>
Limit processed time range to min:max
-y, --yzoom <min:max>
Limit processed sectors to min:max
-a, --io-plot-action <action>
Plot given action (one of Q,D,C) in IO graph
-P, --per-process-io
Distinguish between processes in IO graph
-O, --only-graph <graph>
Add a single graph to the output (see GRAPHS). By default all the graphs are included, but with -O you get only the graphs you ask
for. -O may be used more than once.
-N, --no-graph <type>
Remove a single graph from the output (see GRAPHS). This may also be used more than once.
GRAPHS
Choices for -O and -N are:
io, tput, latency, queue_depth, iops, cpu-sys, cpu-io, cpu-irq, cpu-user, cpu-soft
EXAMPLES
Generate graph from the existing trace.dump:
iowatcher -t trace.dump -o trace.svg
Skip the IO graph:
iowatcher -t trace.dump -o trace.svg -N io
Only graph tput and latency:
iowatcher -t trace.dump -o trace.svg -O tput -O latency
Generate a graph from two runs, and label them:
iowatcher -t ext4.dump -t xfs.dump -l Ext4 -l XFS -o trace.svg
Run a fio benchmark and store the trace in trace.dump, add a title to the top, use /dev/sda for blktrace:
iowatcher -d /dev/sda -t trace.dump -T 'Fio Benchmark' -p 'fio some_job_file'
Make a movie from an existing trace:
iowatcher -t trace --movie -o trace.mp4
iowatcher(1)