I noticed that if I run ls -F on a directory, some of the entries have a * or a @ after them. spuder@ubuntu:~$ ls -F /sbin acpi_available* getpcaps* lvmconf* ntfscp* start-stop-daemon* agetty* getty* lvmdiskscan@ ntfslabel* status@ alsa* halt@ lvmdump* ntfsresize* stop@ alsactl* hdparm* lvmsadc@ spuder@ubuntu:~$ ls -F ~ daq-0.6.1/ examples.desktop noname-cache.lib snort-2.9.1/ Templates/ Desktop/
![What do the symbols displayed by ls -F mean?](https://cdn-ak-scissors.b.st-hatena.com/image/square/b464c2cda694ab68f456c208dff3f30700a47c13/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Funix%2FImg%2Fapple-touch-icon%402.png%3Fv%3D32fb07f7ce26)