find . -type f -name '*_response.xml' | xargs grep -H -c -i 'success' | grep 0$ | cut -d':' -f1
find . -type f -name '*.xml' -newermt "2020-07-03" ! -newermt "2020-07-04"
https://stackoverflow.com/questions/18339307/find-files-in-created-between-a-date-range
find . -type f -name '*.xml' -print0 | xargs -0 grep -l -i "failed"
grep --include=\*.xml -rnw '/path/to/files' -e "needle" -i
find . -type d -name "*needle*" -print
find . -maxdepth 1 -type f -mmin +15 -exec mv {} ./archived \;
find . -maxdepth 1 -type f -mtime +365 -exec mv {} ./archived \;
find /path/to/directory -type d -exec chmod ugo+x {} \;
https://superuser.com/questions/454795/how-can-i-do-a-recursive-chmod-only-on-directories
find . -name '*needle*' -exec rm -rf {} +
find /path/to/directory -name "*.php" -type f -exec wc -l {} \; | sort -rn | head -n 10