command line list all files in directory & all combinations

I have a folder containing 7 mp4 videos. I found a script that is able to combine two video's together in one video (split screen)

Now, I need to have a script that is able to return me all possibilities of video comparisons.

Example: my video directory (ex: only three files)
VID1.mp4
VID2.mp4
VID3.mp4

and what I need is a script that returns this:

VID1.mp4 VID2.mp4
VID1.mp4 VID3.mp4
VID2.mp4 VID1.mp4
VID2.mp4 VID3.mp4
VID3.mp4 VID1.mp4
VID3.mp4 VID2.mp4

Answers


Algorithm: Iterate through all the .mp4 files (f1). Inside that loop, iterate through all the .mp4 files again (f2). If f1 != f2, then process the combination.

Assuming that your script to combine videos is called combine-videos.sh, here's a script to do what you are asking (I named it combo-script.sh):

#!/bin/sh

for f1 in `ls *.mp4`
do
  for f2 in `ls *.mp4`
  do
    if [ $f1 != $f2 ]
    then
      echo combine-videos.sh $f1 $f2
    fi
  done
done

Remove the echo when you are ready to actually run the script. Testing:

$ touch VID1.mp4 VID2.mp4 VID3.mp4
$ sh combo-script.sh
combine-videos.sh VID1.mp4 VID2.mp4
combine-videos.sh VID1.mp4 VID3.mp4
combine-videos.sh VID2.mp4 VID1.mp4
combine-videos.sh VID2.mp4 VID3.mp4
combine-videos.sh VID3.mp4 VID1.mp4
combine-videos.sh VID3.mp4 VID2.mp4

Note that this script assumes that the .mp4 files are in the same directory as the script.


Need Your Help

How Do I Access Document Fields From Meteor Spacebars #with Template Helper?

meteor coffeescript spacebars

This code should display document fields first_name and last_name, instead it generates an "Uncaught Error: Unknown helper 'first_name'" error:

Saving array into multiple rows

php mysql curl

Hey how could I save array into multiple row in database please? I am using mysql database with php.