Updates basics_of_linux.md

### Navigating

`pwd`

`pwd` - Print working directory

Print working directory

`cd` - Change directory

**`cd`**

`cd ~` - Change directory to your home directory

Change directory

`cd -` - Go back to previous directory

`cd ~`

### Looking at files

**`ls`**  

List files in directory

`ls` - List files in directory

Sort list by time. -time -reverse

`ls -ltr` - Sort list by last modified. -time -reverse

```bash

ls -ltr

```

**`touch`**

Create a new file.

**`file`**

Show info about file.

**`cat`**

`file` - Show info about file.

Output content of file.

`cat` - Output content of file.

**less**

`less` - Output file but thest little bit at a time

Output file but thest little bit at a time

**cp**

### Working with files

Copy

`touch` - Create a new file.

**mkdir**

`cp` - Copy

Make directory.

`mkdir` - Make directory.

To make an entire directory structure add the **-p** flag

```

```bash

# Make entire directory structure

mkdir -p new/thisonetoo/and/this/one

```

**rm**  

Remove file

Remmove recursivly and its content. Very dangerous command!

`rm` - Remove file

```

```bash

# Remove recursively and its content. Very dangerous command!

rm -rf ./directory

```

Watch the command destroy an enire machine: [https://www.youtube.com/watch?v=D4fzInlyYQo](https://www.youtube.com/watch?v=D4fzInlyYQo)

Watch the command destroy an entire machine: [https://www.youtube.com/watch?v=D4fzInlyYQo](https://www.youtube.com/watch?v=D4fzInlyYQo)

`rmdir` - Remove empty directory

**rmdir**

Remove empty directory

**history**