Magento delete session files when var/session directory contain a too massive number of sess_* files

cleanup_session.sh

#!/bin/sh
# Place this script in magento/var/ directory

for n in `seq 0 9`
  do
    for u in `seq 0 9`
    do
      for m in `seq 0 9`
        do
          name="sess_"$n$u$m*
          echo $name
          find session/ -name $name -type f -mtime +7 -delete
          echo $name ok
      done
      for m in {a..z}
        do
          name="sess_"$n$u$m*
          echo $name
          find session/ -name $name -type f -mtime +7 -delete
          echo $name ok
      done
    done
      for u in {a..z}
      do
        for m in `seq 0 9`
          do
            name="sess_"$n$u$m*
            echo $name
            find session/ -name $name -type f -mtime +7 -delete
            echo $name ok
        done
        for m in {a..z}
          do
            name="sess_"$n$u$m*
            echo $name
            find session/ -name $name -type f -mtime +7 -delete
            echo $name ok
        done
    done
done

for n in {a..z}
  do
    for u in `seq 0 9`
      do
        for m in `seq 0 9`
          do
            name="sess_"$n$u$m*
            echo $name
            find session/ -name $name -type f -mtime +7 -delete
            echo $name ok
        done
        for m in {a..z}
          do
            name="sess_"$n$u$m*
            echo $name
            find session/ -name $name -type f -mtime +7 -delete
            echo $name ok
        done
    done
    for u in {a..z}
      do
        for m in `seq 0 9`
          do
            name="sess_"$n$u$m*
            echo $name
            find session/ -name $name -type f -mtime +7 -delete
            echo $name ok
        done
        for m in {a..z}
          do
            name="sess_"$n$u$m*
            echo $name
            find session/ -name $name -type f -mtime +7 -delete
            echo $name ok
        done
    done
done