find . -type f-size +100M-size -80M-exec ls -l {} +
-size n[cwbkMG]
File uses n units of space, rounding up. The following suffixes can be
used:
`b' for 512-byte blocks (this is the default if no suffix is used)
`c' for bytes
`w' for two-byte words
`k' for Kibibytes (KiB, units of 1024 bytes)
`M' for Mebibytes (MiB, units of 1024 * 1024 = 1048576 bytes)
`G' for Gibibytes (GiB, units of 1024 * 1024 * 1024 = 1073741824
bytes)