DOC: add pbk path to archive_command/restore_command - PGPRO-3240

Author: Liudmila Mantrova

doc/pgprobackup.xml

@@ -782,12 +782,14 @@ ALTER ROLE backup WITH REPLICATION;
           parameter, as follows:
         </para>
         <programlisting>
-archive_command = 'pg_probackup archive-push -B <replaceable>backup_dir</replaceable> --instance <replaceable>instance_name</replaceable> --wal-file-path=%p --wal-file-name=%f [<replaceable>remote_options</replaceable>]'
+archive_command = '<replaceable>install_dir</replaceable>/pg_probackup archive-push -B <replaceable>backup_dir</replaceable> --instance <replaceable>instance_name</replaceable> --wal-file-path=%p --wal-file-name=%f [<replaceable>remote_options</replaceable>]'
 </programlisting>
       </listitem>
     </itemizedlist>
     <para>
-      where <replaceable>backup_dir</replaceable> and
+      where <replaceable>install_dir</replaceable> is the
+      installation directory of the <application>pg_probackup</application>
+      version you are going to use, <replaceable>backup_dir</replaceable> and
       <replaceable>instance_name</replaceable> refer to the already
       initialized backup catalog instance for this database cluster,
       and <link linkend="pbk-remote-server-opts">remote_options</link>
@@ -1869,15 +1871,14 @@ pg_probackup restore -B <replaceable>backup_dir</replaceable> --instance <replac
       in <filename>recovery.conf</filename>:
     </para>
     <programlisting>
-# recovery.conf generated by pg_probackup 2.1.5
-restore_command = 'pg_probackup archive-get -B backup_dir --instance instance_name --wal-file-path=%p --wal-file-name=%f --remote-host=192.168.0.3 --remote-port=2303 --remote-user=backup'
+restore_command = '<replaceable>install_dir</replaceable>/pg_probackup archive-get -B <replaceable>backup_dir</replaceable> --instance <replaceable>instance_name</replaceable> --wal-file-path=%p --wal-file-name=%f --remote-host=192.168.0.3 --remote-port=2303 --remote-user=backup'
 </programlisting>
     <para>
       Alternatively, you can use the <option>--restore-command</option>
       option to provide the entire <parameter>restore_command</parameter>:
     </para>
     <programlisting>
-pg_probackup restore -B <replaceable>backup_dir</replaceable> --instance <replaceable>instance_name</replaceable> --remote-user=postgres --remote-host=192.168.0.2 --remote-port=2302 --restore-command='pg_probackup archive-get -B <replaceable>backup_dir</replaceable> --instance <replaceable>instance_name</replaceable> --wal-file-path=%p --wal-file-name=%f --remote-host=192.168.0.3 --remote-port=2303 --remote-user=backup'
+pg_probackup restore -B <replaceable>backup_dir</replaceable> --instance <replaceable>instance_name</replaceable> --remote-user=postgres --remote-host=192.168.0.2 --remote-port=2302 --restore-command='<replaceable>install_dir</replaceable>/pg_probackup archive-get -B <replaceable>backup_dir</replaceable> --instance <replaceable>instance_name</replaceable> --wal-file-path=%p --wal-file-name=%f --remote-host=192.168.0.3 --remote-port=2303 --remote-user=backup'
 </programlisting>
     <note>
       <para>