Unix Shell Commands
cat
cat displays the content of a file.
find
find searches the directory tree for a file name that matches the arguments on the command line.
getfacl
getfacl displays information for all files, including proprietar and group.
grep
grep searches for a given text within a file or output.
The difference between find and grep is that the first searchs the filename in a directory tree, and the second finds a text within a file or output.
route
route add adds an entry in the kernel’s IP route table.
tee
tee displays the input as an standard output and also on screen.