0 
$ find ./ -name "AABE*" ## this returns nothing $ echo $? 0 $ find ./ -name "AWGT*" ## this returns locations of were files matching the criteria ./Atempt3A/AWGT-modified.txt ./Atempt3A/test_will_nov2022/AWGT-modified.txt ./Attempt5_Dec_2022/scripts/AWGT-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/AWGT-modified.txt $ echo $? 0 $ find ./ -type f -name "AWGT*" -o -name "SLIN*" -o -name "AABE*" -o -name "AMDM*" -o -name "ARDE*" -o -name "WTHC*" ## this returns locations of were multiple files matching the criteria ./Atempt3A/AMDM-modified.txt ./Atempt3A/AWGT-modified.txt ./Atempt3A/test_will_nov2022/AWGT-modified.txt ./Atempt3A/WTHC-modified.txt ./Attempt2/164_sites/env_scripts/AMDM-modified.txt ./Attempt2/164_sites/env_scripts/WTHC-modified.txt ./Attempt2/179ish_sites_20220914/AMDM-modified.txt ./Attempt2/179ish_sites_20220914/WTHC-modified.txt ./Attempt5_Dec_2022/again/ARDE-modified.txt ./Attempt5_Dec_2022/again/SLIN-modified.txt ./Attempt5_Dec_2022/scripts/AMDM-modified.txt ./Attempt5_Dec_2022/scripts/AWGT-modified.txt ./Attempt5_Dec_2022/scripts/WTHC-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/AMDM-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/ARDE-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/AWGT-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/SLIN-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/WTHC-modified.txt $ echo $? 0

What I want is the output to show something like: cannot find "AABE*" , or something to this affect can this be done?

related to this question but mine is slighly different Can I make `find` return non-0 when no matching files are found?

EDIT1-Answer

$ find ./ -type f -name "AWGT*" -o -name "SLIN*" -o -name "AZZZ*" -o -name "AMDM*" -o -name "ARDE*" -o -name "AQQQ*" | perl -pe ' BEGIN{ our %h; our $error = 0; } $h{$1}++ if m/(AWGT|SLIN|AZZZ|AMDM|AQQQ)/; END{ for ("AWGT", "SLIN", "AZZZ", "AMDM", "AQQQ") { if ($h{$_} == 0) { $error = 1; warn "cannot find $_\n" } } exit($error) } ' ./Atempt3A/AMDM-modified.txt ./Atempt3A/AWGT-modified.txt ./Atempt3A/test_will_nov2022/AWGT-modified.txt ./Attempt2/164_sites/env_scripts/AMDM-modified.txt ./Attempt2/179ish_sites_20220914/AMDM-modified.txt ./Attempt5_Dec_2022/again/ARDE-modified.txt ./Attempt5_Dec_2022/again/SLIN-modified.txt ./Attempt5_Dec_2022/scripts/AMDM-modified.txt ./Attempt5_Dec_2022/scripts/AWGT-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/AMDM-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/ARDE-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/AWGT-modified.txt ./Attempt5_Dec_2022/scripts - added_morefrom_again_folder/SLIN-modified.txt cannot find AZZZ cannot find AQQQ
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What I would do:

find ./ -type f -name "AWGT*" -o -name "SLIN*" \ -o -name "AABE*" -o -name "AMDM*" -o -name "ARDE*" -o -name "WTHC*" | perl -pe ' BEGIN{ our %h; our $error = 0; } $h{$1}++ if m/(AWGT|SLIN|AABE|AMDM|WTHC)/; END{ for ("AWGT", "SLIN", "AABE", "AMDM", "WTHC") { if ($h{$_} == 0) { $error = 1; warn "cannot find $_\n" } } exit($error) } '
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