fix error hooks and add listing everything

docs/content/cli/_index.md

@@ -88,7 +88,7 @@ Usage:
   backy exec [command]
 
 Available Commands:
-  host        Runs command defined in config file on the hosts in order specified.
+  host        Specify command(s) defined in config file on the host in order specified.
   hosts       Runs command defined in config file on the hosts in order specified.
 
 Flags:
@@ -153,14 +153,14 @@ Global Flags:
 ## list
 
 ```
-List commands, lists, or hosts defined in config file
+List commands, lists, or hosts defined in config file. The subcommands take zero or more arguments to print specific commands or lists
 
 Usage:
   backy list [command]
 
 Available Commands:
-  cmds        List commands defined in config file.
-  lists       List lists defined in config file.
+  cmds        Prints commands defined in config file.
+  lists       Prints lists defined in config file.
 
 Flags:
   -h, --help   help for list
@@ -178,7 +178,7 @@ Use "backy list [command] --help" for more information about a command.
 ## list cmds
 
 ```
-List commands defined in config file
+Prints commands defined in config file. Pass no arguments to print all commands
 
 Usage:
   backy list cmds [cmd1 cmd2 cmd3...] [flags]
@@ -197,7 +197,7 @@ Global Flags:
 ## list lists
 
 ```
-List lists defined in config file
+Prints lists defined in config file. Pass no arguments to print all lists
 
 Usage:
   backy list lists [list1 list2 ...] [flags]

docs/content/cli/exec.md

@@ -2,14 +2,23 @@
 title: Exec
 ---
 
-The `exec` subcommand can do some things that the configuration file can't do yet. The command `exec host` can execute commands on many hosts.
+~~The `exec` subcommand can do some things that the configuration file can't do yet. The command `exec host` can execute commands on many hosts.~~
+
+{{% notice info %}}
+  For now only the `exec host` sub-command is implemented. More to come.
+{{% /notice %}}
+
+{{% notice warning %}}
+  The config file's `hosts` are overridden by this command. Hooks are not altered. For consistent results, create a local config file with only the hosts you want to use.
+{{% /notice %}}
+
 
 `exec host` takes the following arguments:
 
 ```sh
-  -c, --commands strings   Accepts space-separated names of commands.
-  -h, --help               help for host
-  -m, --hosts strings      Accepts space-separated names of hosts.
+  -c, --command stringArray   Accepts space-separated names of commands. Specify multiple times for multiple commands.
+  -h, --help                  help for host
+  -m, --hosts stringArray     Accepts space-separated names of hosts. Specify multiple times for multiple hosts.
 ```
 
 The commands have to be defined in the config file. The hosts need to at least be in the ssh_config(5) file.

docs/content/cli/list.md

@@ -3,7 +3,7 @@ title: List
 ---
 
 
-List commands, lists, or hosts defined in config file
+List commands, lists, or hosts defined in config file. The subcommands take zero or more arguments to print specific commands or lists
 
 Usage:
 ```
@@ -11,8 +11,8 @@ Usage:
 ```
 
 Available Commands:
-  cmds        List commands defined in config file.
-  lists       List lists defined in config file.
+  cmds        Prints commands defined in config file.
+  lists       Prints lists defined in config file.
 
 Flags:
 ```