like "tail -f", but works on truncated files, directories, more

 xtail watches the growth of files. It's like running a "tail -f" on
 a bunch of files at once. It notices if a file is truncated and starts
 from the beginning. You can specify both filenames and directories on
 the command line. If you specify a directory, it watches all the files
 in that directory. It will notice when new files are created (and
 start watching them) or when old files are deleted (and stop watching
 them).
 .
 Note that xtail isn't a graphical (X11) program, it runs on a plain tty.
 The name likely comes from "eXtended tail" or such.