> –allows the user to input text and using control c paste it
< –allows the user to see the content inside a file in this case the file was helloworld.txt
| – it reads the input that given and and copy ls|less
this command searches for a pattern, for example in this picture I used pic and below you will see all the files that has pic in its name.
head-This command is used to print the first 10 line of a file
tail- this command is used to print the last 10 lines of a file
echo- is a command that prints out what ever you input as an output like cout in c++.