'find' vs 'mdfind'

[bill99]

Hello,

just came to know about 'mdfind' a few days ago and it seems it does a very good job, e.g. when the location is not known and it does search files and folders at the same time


Question:
But I am wondering why there are compared to 'find' no error messages.... Are the the errors(e.g. because even sudo is not allowed to access certain folders/files) just not displayed?

Thank's a lot in advance!





imac-admin@imac-admins-iMac ~ % sudo find / -type f -name "frutiger"
Password:
find: /System/Volumes/Data/.Spotlight-V100: No such file or directory
find: /System/Volumes/Data/mnt: No such file or directory
find: /System/Volumes/Data/private/var/db/fpsd/dvp: Operation not permitted
find: /System/Volumes/Data/private/var/db/lockdown: Operation not permitted
find: /System/Volumes/Data/private/var/db/searchparty: Operation not permitted

 

[frou]

find is just "dumb" brute-force examining the entire filesystem, while mdfind IIRC is just searching its index that is already maintained on an ongoing basis in the background. So the decision about which locations are off-limits has already been made before you even run the mdfind command.