Fix typos

src/day_1/terminal_basics.md

@@ -39,7 +39,7 @@ The output is going to be the files and directories in your current path. `ls` s
 
 What if you want to take a look at the content of a different directory at a different path?
 
-To examine this, lets first create a new directory. Enter the command `mkdir empty_house`. Well, you don't see anything? Did the command do something at all? To verify this, run `ls` again. Now you should see your new directory `empty_house` listed too! `mkdir` stands for _make directory_. `empty_house` is just a name for our new directory. You could have used `mkdir Images` for example to create a directory called `Images`.
+To examine this, let's first create a new directory. Enter the command `mkdir empty_house`. Well, you don't see anything? Did the command do something at all? To verify this, run `ls` again. Now you should see your new directory `empty_house` listed too! `mkdir` stands for _make directory_. `empty_house` is just a name for our new directory. You could have used `mkdir Images` for example to create a directory called `Images`.
 
 Is `empty_house` really empty? Let's verify that.
 
@@ -68,7 +68,7 @@ Moving is not the same as renaming, right? Well, `mv` does move a file or direct
 
 I know, it is tricky. Let's take a look at an example that does actually _move_. Enter the command `touch friend2.txt friend3.txt`. This will create two new files at the same time. This way, you don't have to type `touch friend2.txt` **and** `touch friend3.txt`.
 
-Now lets move one of our new text files. Enter `mv friend2.txt happy_house`. Enter `ls` to see that `friend2.txt` did disappear. Let's verify that it now lives in `happy_house`. You could use `mv happy_house` and then `ls` analogously to the strategy above. But it is faster to use `ls` directly. Enter `ls happy_house`:
+Now let's move one of our new text files. Enter `mv friend2.txt happy_house`. Enter `ls` to see that `friend2.txt` did disappear. Let's verify that it now lives in `happy_house`. You could use `mv happy_house` and then `ls` analogously to the strategy above. But it is faster to use `ls` directly. Enter `ls happy_house`:
 
 ```console
 $ ls happy_house
@@ -88,7 +88,7 @@ We did not only move `friend3.txt`. We did also give it a new name in the destin
 
 What if our house is not really _happy_ anymore since a loud friend did move in? Let's remove that loud friend!
 
-Enter `cd happy_house` and then `rm loud_friend.txt`. You will not see any output, but lets see what has changed in the directory:
+Enter `cd happy_house` and then `rm loud_friend.txt`. You will not see any output, but let's see what has changed in the directory:
 
 ```console
 $ ls happy_house
@@ -280,7 +280,7 @@ HOW CAN I EXIT THIS MANUAL? DO I HAVE TO EXIT THE TERMINAL AND OPEN A NEW ONE?
 
 You can exit the manual by pressing the key `q`. You are free now!
 
-Now, lets try the option `-l` that we got from the terminal:
+Now, let's try the option `-l` that we got from the terminal:
 
 ```console
 $ wc -l rules.txt

src/day_2/shell_scripting.md

@@ -140,7 +140,7 @@ This is free software; you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.
 ```
 
-Now lets output the variable that we did define above:
+Now, let's output the variable that we did define above:
 
 ```console
 $ echo $BASH_VERSION
@@ -181,7 +181,7 @@ Hello mo!
 
 We see `Hello mo!` as output. This is because my user name on my machine is `mo`. `USER` is a so called environment variable that is defined for all programs. If you run the script on your machine, you will get your user name instead of `mo`. There are more environment variables like `PATH` which we will learn about later.
 
-Now lets run the following:
+Now, let's run the following:
 
 ```console
 $ USER=Tux ./hello.sh

src/day_4/tasks.md

@@ -4,7 +4,7 @@
 
 > 📍 : This task should be done on the Contabo server after connecting with SSH to the user that you did create yesterday on the server (not admin).
 
-We want to practice compilation and containers, so lets compile in a container!
+We want to practice compilation and containers, so let's compile in a container!
 
 In this task, we want to compile the program `tmate`.