fixed/enhanced command-line documentation

doc/gitlab-basics/command-line-commands.md

@@ -7,17 +7,19 @@ In Git, when you copy a project you say you "clone" it. To work on a git project
 When you are on your Dashboard, click on the project that you'd like to clone.
 To work in the project, you can copy a link to the Git repository through a SSH
 or a HTTPS protocol. SSH is easier to use after it's been
-[setup](create-your-ssh-keys.md). While you are at the **Project** tab, select
-HTTPS or SSH from the dropdown menu and copy the link using the 'Copy to clipboard'
+[set up](create-your-ssh-keys.md). While you are at the **Project** tab, select
+HTTPS or SSH from the dropdown menu and copy the link using the _Copy URL to clipboard_
 button (you'll have to paste it on your shell in the next step).
 
 ![Copy the HTTPS or SSH](img/project_clone_url.png)
 
 ## On the command line
 
+This section has examples of some basic shell commands that you might find useful. For more information, search the web for _bash commands_.
+
 ### Clone your project
 
-Go to your computer's shell and type the following command:
+Go to your computer's shell and type the following command with your SSH or HTTPS URL:
 
 ```
 git clone PASTE HTTPS OR SSH HERE
@@ -25,33 +27,45 @@ git clone PASTE HTTPS OR SSH HERE
 
 A clone of the project will be created in your computer.
 
->**Note:** If you clone your project via an URL that contains special characters, make sure that they are URL-encoded.
+>**Note:** If you clone your project via a URL that contains special characters, make sure that characters are URL-encoded.
 
-### Go into a project, directory or file to work in it
+### Go into a project directory to work in it
 
 ```
-cd NAME-OF-PROJECT-OR-FILE
+cd NAME-OF-PROJECT
 ```
 
-### Go back one directory or file
+### Go back one directory
 
 ```
-cd ../
+cd ..
 ```
 
-### View what’s in the directory that you are in
+### List what’s in the current directory
 
 ```
 ls
 ```
 
-### Create a directory
+### List what’s in the current directory that starts with `a`
+
+```
+ls a*
+```
+
+### List what’s in the current directory that ends with `.md`
+
+```
+ls *.md
+```
+
+### Create a new directory
 
 ```
 mkdir NAME-OF-YOUR-DIRECTORY
 ```
 
-### Create a README.md or file in directory
+### Create a README.md file in the current directory
 
 ```
 touch README.md
@@ -62,6 +76,12 @@ nano README.md
 #### Press: enter
 ```
 
+### Show the contents of the README.md file
+
+```
+cat README.md
+```
+
 ### Remove a file
 
 ```
@@ -74,12 +94,18 @@ rm NAME-OF-FILE
 rm -r NAME-OF-DIRECTORY
 ```
 
-### View history in the command line
+### View command history
 
 ```
 history
 ```
 
+### Execute command 123 from history
+
+```
+!123
+```
+
 ### Carry out commands for which the account you are using lacks authority
 
 You will be asked for an administrator’s password.
@@ -88,8 +114,14 @@ You will be asked for an administrator’s password.
 sudo
 ```
 
-### Tell where you are
+### Show which directory I am in
 
 ```
 pwd
 ```
+
+### Clear the shell window
+
+```
+clear
+```