7_streams_and_pipes.Rmd: fix typo

7_streams_and_pipes.Rmd

@@ -62,7 +62,7 @@ cat .bashrc
 
 # Streams manipulation
 
-You can use the `>` character to redirect a flux toward a file. The following command make a copy of your `.bashrc` files.
+You can use the `>` character to redirect a flux toward a file. The following command makes a copy of your `.bashrc` files.
 
 ```sh
 cat .bashrc > my_bashrc
@@ -82,11 +82,11 @@ cal -N 2 > my_cal
 
 What is the content of `my_cal` what happened ?
 
-The `>` command can have an argument, the syntax to redirect **stdout** to a file is `1>` it's also the default option (equivalent to `>`). Here the `-N` option doesn't exists, `cal` throws an error. Errors are sent to **stderr** which have the number 2.
+The `>` command can have an argument, the syntax to redirect **stdout** to a file is `1>` it's also the default option (equivalent to `>`). Here the `-N` option doesn't exist, `cal` throws an error. Errors are sent to **stderr** which have the number 2.
 
 Save the error message in `my_cal` and check the results with `less`.
 
-We have seen tha `>` overwrite the content of the file. Try the following commands:
+We have seen that `>` overwrite the content of the file. Try the following commands:
 
 ```sh
 cal 2020 > my_cal
@@ -96,7 +96,7 @@ cal -N 2 2>> my_cal
 
 Check the results with the command `less`.
 
-The command `>` send the stream from the left to the file on the right. Try the following:
+The command `>` sends the stream from the left to the file on the right. Try the following:
 
 ```sh
 cat < my_cal
@@ -114,7 +114,7 @@ Type some text and type `EOF` on a new line. `EOF` stand for **e**nd **o**f **f*
 
 What happened ? Can you check the content of `my_notes` ? How would you modify this command to add new notes?
 
-Finaly you can redirect a stream toward another stream with the following syntax:
+Finally, you can redirect a stream toward another stream with the following syntax:
 
 ```sh
 cal -N2 2&> my_redirection
@@ -155,7 +155,7 @@ Analyze the following command, what would it do ?
 wget -q -O - http://hgdownload.soe.ucsc.edu/goldenPath/hg38/bigZips/hg38.fa.gz | gzip -dc | less
 ```
 
-Remember that most Unix command process input and output line by line. Which means that you can process huge dataset without intermediate files or huge RAM capacity.
+Remember that most Unix command process input and output line by line. Which means that you can process huge datasets without intermediate files or huge RAM capacity.
 
 > We have users the following commands:
 >