grep -v “^$” file1.txt > file2.txt
find . -name “file.txt” OR find -name “file.txt”
find /usr/bin/DIR -name “file.txt”
find -maxdepth 1 -name “file.txt”
find . -name “*dummy*”
find . -iname “file”
find -not -name “file.txt”
! find
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