Merge pull request #6611 from SvenDowideit/remove-spurious-dollar-signs

Remove `$` leaders from examples of editing text in a file

docs/sources/installation/ubuntulinux.md

@@ -244,18 +244,18 @@ To install the latest version of docker, use the standard
 If you want to enable memory and swap accounting, you must add the
 following command-line parameters to your kernel:
 
-    $ cgroup_enable=memory swapaccount=1
+    cgroup_enable=memory swapaccount=1
 
 On systems using GRUB (which is the default for Ubuntu), you can add
 those parameters by editing `/etc/default/grub` and
 extending `GRUB_CMDLINE_LINUX`. Look for the
 following line:
 
-    $ GRUB_CMDLINE_LINUX=""
+    GRUB_CMDLINE_LINUX=""
 
 And replace it by the following one:
 
-    $ GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1"
+    GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1"
 
 Then run `sudo update-grub`, and reboot.
 
@@ -283,7 +283,7 @@ forwarding:
     # Change:
     # DEFAULT_FORWARD_POLICY="DROP"
     # to
-    $ DEFAULT_FORWARD_POLICY="ACCEPT"
+    DEFAULT_FORWARD_POLICY="ACCEPT"
 
 Then reload UFW:
 
@@ -316,7 +316,7 @@ Docker daemon for the containers:
     $ sudo nano /etc/default/docker
     ---
     # Add:
-    $ DOCKER_OPTS="--dns 8.8.8.8"
+    DOCKER_OPTS="--dns 8.8.8.8"
     # 8.8.8.8 could be replaced with a local DNS server, such as 192.168.1.1
     # multiple DNS servers can be specified: --dns 8.8.8.8 --dns 192.168.1.1