Display the current directory sorted by time, in reverse order.	ls -ltr
Count files in the current directory.	ls -l | wc -l
Display files between 1 and 2 days old.	find . -ctime 1 | xargs ls -l
Display files more than 2 days old.	find . -ctime +2 | xargs ls -l | less
Delete unconditionally files older than 2 days.	find . -ctime +2 | xargs rm -f
Display files modified between 6 and 9 minutes ago.	find . -mmin +5 -mmin -10 | xargs ls -l
Move files created more than 1020 minutes ago from the current directory into the 20070512/ directory .	find . -cmin +1020 | xargs -i mv {} 20070512/
List files between 1200 minutes and 1600 minutes old, matching the pattern index* .	find . -mmin +1200 -mmin -1600 -name 'index*' | xargs ls -l
To a subdirectory depth of 3, find files in subdirectories containing 'abc' in their names and having a size greater than 200 bytes.	find . -maxdepth 3 -type f -name "*abc*" -size +200c
To a subdirectory depth of 3, find files in subdirectories with a name of target and a size greater than 200 characters, and rename them to target.large .	find . -maxdepth 20 -type f -name "target" -size +200c -exec mv "{}" "{}".large \;
For a maximum subdirectory depth of 20, find files named index.php, index.php3, index.html, or index.htm that contain the text "<script>function" and write what is found to output file "script_functions.txt" (finds certain kinds of injected spam).	find ./ -maxdepth 20 -type f \( -name "index.php" -o -name "index.php3" -o -name "index.html" -o -name "index.htm" \) -exec grep -H --line-buffered "<script>function" '{}' >> ./script_functions.txt \;
In the current directory, find files with names beginning "__132." and pass each one to grep, to search for the string "<script>function" within each file pasted from the find command.	find . -name "__132.*" -exec grep -i '<script>function' "{}" \;
rename every file in the directory to only the second and third nodes delimited by ".", dropping the first node in the filename	ls -1 ./ | awk -F. '{print "mv "$1"."$2"."$3" "$2"."$3 }' | sh