[OS] English Premier League

#!/bin/bash
if [ $# -ne 1 ]
then
    echo "USAGE: `basename $0` source_folder"
    exit 1
fi
FROM=$1
touch results.txt
#get all folders with the name koloX in the argument1 directory where X is a number
folders=`ls -R $FROM | grep ^d | awk 'print $9' | grep ^kolo[0-9][0-9]*`
for folder in $folders
do
    #each of deez folder has exactly one .rez file with tha same name so put its insides into our results.txt
    echo `cat "${FROM}/${folder}/${folder}.rez"` >> results.txt
done
#leave out the rows that include losses, that info is not at our interest
#not sure about the echo usage I must say but there shouldn't be a problem
echo `cat results.txt | grep -v ^l` > results.txt
#we are unaware which teams are participating, thus use uniq
TEAMS=`cat results.txt | awk -F, '{print $2}' | uniq`
#create a file that shows the standings of the league table with team name in one column and number of points in the other
touch standings.txt
GAMES=`cat results.txt`
for team in $TEAMS
do
    points=0
    #we wanna calculate number of points for each team by counting in how many rows they appear
    #I suppose I should've gone with `cat results.txt | awk -F, '{print $2}' | grep ^$team | wc -l`, but I didn't think of it until now..
    for game in $GAMES
    do
        team_name=`$game | awk -F, '{print $2}'`
        if [ "$team_name" == "$team" ]
        points=`expr $points + 1`
    done
    echo "$points $team" >> standings.txt
done
#sort the standings, as those with most points are on top
sort -n -r standings.txt | cat standings.txt