bash

bash

start of file
#!/bin/bash

variable from console
countdirectories=$(ls | wc -l);

argument from console
$1

check variable
if [ $1 ]



#!/bin/bash

date=$(date +%Y-%m-%d)
yesterday=$(date -d "1 day ago" +"%Y-%m-%d")
day_before_yesterday=$(date -d "2 day ago" +"%Y-%m-%d")
if [ $1 ]; then
	if cd $1; then
		count_directories=$(ls -d * | wc -l)
		if [ $count_directories -gt 0 ]; then
			for dir in $(ls -d *); do
				cd $1/$dir
				for dir_inner in $(ls -d *); do
					cd $1/$dir/$dir_inner
					count_inner_directories=$(ls -d * | wc -l)
					if [ $count_inner_directories -gt 3 ]; then
						check=$(find $1/$dir/$dir_inner/ -type d -name $date)
						check2=$(find $1/$dir/$dir_inner/ -type d -name $yesterday)
						check3=$(find $1/$dir/$dir_inner/ -type d -name $day_before_yesterday)
						if [ $check ] && [ $check2 ] && [ $check3 ]; then
							for backup_dir in $(ls -d *); do
								if [ $backup_dir != $date ] && [ $backup_dir != $yesterday ] && [ $backup_dir != $day_before_yesterday ]; then
									rm -r $1/$dir/$dir_inner/$backup_dir;
								fi
							done
						else
							echo 'no';
						fi

					else
						echo 'Error'
					fi
				done
			done
		else
			echo "No directories"
		fi
	else
		echo "no directory"
	fi
else
	echo "Error, need to pass path to directory"
fi