Command ls<br>
<br>
ls = list directory contents  <br>
<br>
SYNOPSIS<br>
<br>
ls [OPTION]... [FILE]...  <br>
<br>
DESCRIPTION<br>
<br>
List information about the FILEs (the current directory by default).<br>
Mandatory arguments to long options are mandatory for short options too.<br>
<br>
-a, --all<br>
    do not hide entries starting with "." <br>