#I have the next line
#./dir1/d1_copy/d12/f12.txt | 2022 03 10
#to get the last field i have to reverse the line, then cut the first field and reverse again
echo "./dir1/d1_copy/d12/f12.txt | 2022 03 10" | rev | cut -d/ -f1 | rev
#result f12.txt | 2022 03 10
#syntax
#command | rev | cut -d(field separator char.) -f1 | rev