In Lab 3 we learned about commands like: echo, grep, head, < , > , | , tail.

“<” command: 

Input gets its contents from the keyboard most likely, but it can be redirected using “<” symbols.

note: use sort to make the output of the screen in order (Alphabetic on this case).

 

 

“>” command:

 

The output almost always it’s display their results on the screen and it’s called standard output. To redirect standard output to a file, the “>” character is used.

note: “>>” add more output information the filename.txt .

 

 

 

“head” command:

 

Display first 10 line of any text or directory.

 

“tail” command:

 

Display last 10 line of any text or directory.

 

 

 

pipe “|” command:

 

Combaining two commans at the same time using “|”. This method is one of the most used on the real world.

 

 

 

“grep” command:

 

a command the searches for names on a specific directory.

 

 

“echo” command:

Is a built in command on linux or any other version of unix. This command is in the bash and C shell.