Skripte/bilder_aufnummerieren.sh.sb-92fe0ed5-zC7Bgh

ls *.JPG | awk -F'_' '{ if (NR == 1) {basis = substr($0, 5,4);} k = substr( $0, 5,4); erg = k - basis + 1; ergtext = sprintf("IMG_%04d",erg);  print "mv "$0" "ergtext".JPG";  }' | sh