find PRUEBA/fuentes/* -type d -regex ".*[0,2,3,4,5,6,7,8,9]" -exec rm -r {} \;$ find PRUEBA/fuentes/* -type d -regex ".*[^1]" -exec rm -r {} \;

(62)$ ls -l /dev/tt*

find /usr/bin -type f

ls /

$ find / -maxdepth 1 -type d

(65)$ find / -user root -type f