[ Thanks to Borys
Musielak for this link. ]
“Unix systems provide a number of commands to manage files and
directories. Their strong point is the ability to use them in a
rather simple manner against a group of files/directories meeting
certain conditions. For example all the files satisfying specific
criteria can be deleted or have their names changed en masse.“1. ls
“It is very frequently used command. It redirects directory
contents to standard output. If issued without any path it will
list current directory (where we are at present)…”