TL;DW
# find with grep
# + concatinates results and runs the command once, faster
find . -name "*.txt" -exec grep -l "somename" '{}' '+'
# run a command for each result individually
find . -name "*.txt" -exec basename '{}' \';' | column
# case insensitive
find -iname "SoMeNaMe.TxT
# file or dir
find -type f
find -type d
# define file owner
find -user Bob
# define file group
find -group wheel
# by permission
find -perm 777
# find by size
find -size +1G
Why? The quotes will be consumed by the shell when you execute the command, unless you do like
"'{}'"