List all files from the current directory and subdirectories, sorted by modification time, oldest first.

Here's a version that doesn't use find.

Finds all files below the current directory. Orders the result from smallest to largest. Good for finding the largest files in the tree.

This takes quite a while on my system. You may want to test it out with /bin first, or background it and keep working. If you want to get rid of the "No manual entry for [whatever]" and just have the [whatever], use the following sed command after this one finishes. sed -n 's/^No manual entry for \(.*\)/\1/p' nomanlist.txt Show Sample Output

This command, or a derivative like it, is a must-have if you're a server administrator interested in website optimization: https://kinqpinz.info/?%C2%B6=287a7ba6 Command requires Yahoo's YUI, find it here: http://developer.yahoo.com/yui/ Show Sample Output

I had a file named " " (one space) and needed a way to see what the real filename was so I could remove it. sed to the rescue. Show Sample Output

Broaden your knowledge of the utilities available to you in no particular order whatsoever! Then use that knowledge to create more nifty one-liners that you can post here. =p Takes a random number modulo the number of files in $dir, prints the filename corresponding to that number, and passes it as an argument to man.

Great idea camocrazed. Another twist would be to display a different man page based on the day of the year. The following will continuously cycle through all man pages: man $(ls /bin | sed -n $(($(date +%j) % $(ls /bin | wc -l)))p)

Another one. Maybe not the quicker because of the sort command, but it will also look in other man sections. updated with goodevilgenius 'shuf' idea

Doesn't need to be run as root.

Instead of tedious manual mv commands and tabbing, this routine creates a file listing all the filenames in the PWD twice, edit the second instance on each line to the new name, then save the file, the routine does the rest. Feel free to replace nano with your holy war editor of choice. You will get a lot of "mv: 'x' and 'x' are the same file" warnings, these could be cleaned up but the routine works.

wrap it in a function if you like... lastfile () { ls -ltp | sed '1 d' | head -n1 } Show Sample Output

List all files in a directory in reverse order by modified timestamp. When piped through tail the user will see the most recent file name.

executed on SLES 11.2

This was tested on Ubuntu 12.04 (Precise) LTS Server. It returns the name of the symlink within /dev/disk/by-id for the physical drive you specify. Change /dev/sda to the one you want, and replace ata- with scsi- or the appropriate type for your drive. I used this to pre-configure grub-pc during a non-interactive install because I had to tell it which disk to install grub on, and physical disks don't have a UUID such as that blkid provides.

Provides a recursive time ordered list of the current directory over the last 3 minutes. Excluding zero byte files: ls -lF -darth `find . -size +0 -mmin -3` For the last day's files, change "-mmin -3" to "-mtime -1": ls -lF -darth `find . -size +0 -mtime -1` Show Sample Output