diff --git a/USAGE.md b/USAGE.md
index e69de29..98a6018 100644
--- a/USAGE.md
+++ b/USAGE.md
@@ -0,0 +1,156 @@
+# NAME
+
+    MySQLTuner 1.8.1 - MySQL High Performance Tuning Script
+
+# IMPORTANT USAGE GUIDELINES
+
+To run the script with the default options, run the script without arguments
+Allow MySQL server to run for at least 24-48 hours before trusting suggestions
+Some routines may require root level privileges (script will provide warnings)
+You must provide the remote server's total memory when connecting to other servers
+
+# CONNECTION AND AUTHENTICATION
+
+    --host <hostname>           Connect to a remote host to perform tests (default: localhost)
+    --socket <socket>           Use a different socket for a local connection
+    --port <port>               Port to use for connection (default: 3306)
+    --user <username>           Username to use for authentication
+    --userenv <envvar>          Name of env variable which contains username to use for authentication
+    --pass <password>           Password to use for authentication
+    --passenv <envvar>          Name of env variable which contains password to use for authentication
+    --ssl-ca <path>             Path to public key
+    --mysqladmin <path>         Path to a custom mysqladmin executable
+    --mysqlcmd <path>           Path to a custom mysql executable
+    --defaults-file <path>      Path to a custom .my.cnf
+    --server-log <path>         Path to explict log file
+
+# PERFORMANCE AND REPORTING OPTIONS
+
+    --skipsize                  Don't enumerate tables and their types/sizes (default: on)
+                                (Recommended for servers with many tables)
+    --skippassword              Don't perform checks on user passwords(default: off)
+    --checkversion              Check for updates to MySQLTuner (default: don't check)
+    --updateversion             Check for updates to MySQLTuner and update when newer version is available (default: don't check)
+    --forcemem <size>           Amount of RAM installed in megabytes
+    --forceswap <size>          Amount of swap memory configured in megabytes
+    --passwordfile <path>       Path to a password file list(one password by line)
+
+# OUTPUT OPTIONS
+
+    --silent                    Don't output anything on screen
+    --nogood                    Remove OK responses
+    --nobad                     Remove negative/suggestion responses
+    --noinfo                    Remove informational responses
+    --debug                     Print debug information
+    --noprocess                Consider no other process is running
+    --dbstat                    Print database information
+    --nodbstat                  Don't Print database information
+    --tbstat                    Print table information
+    --notbstat                  Don't Print table information
+    --colstat                   Print column information
+    --nocolstat                  Don't Print column information
+    --idxstat                   Print index information
+    --noidxstat                 Don't Print index information
+    --sysstat                   Print system information
+    --nosysstat                 Don't Print system information
+    --pfstat                    Print Performance schema
+    --nopfstat                  Don't Print Performance schema
+    --verbose                   Prints out all options (default: no verbose, dbstat, idxstat, sysstat, tbstat, pfstat)
+    --bannedports               Ports banned separated by comma(,)
+    --maxportallowed            Number of ports opened allowed on this hosts
+    --cvefile <path>            CVE File for vulnerability checks
+    --nocolor                   Don't print output in color
+    --json                      Print result as JSON string
+    --buffers                   Print global and per-thread buffer values
+    --outputfile <path>         Path to a output txt file
+    --reportfile <path>         Path to a report txt file
+    --template   <path>         Path to a template file
+
+# PERLDOC
+
+You can find documentation for this module with the perldoc command.
+
+    perldoc mysqltuner
+
+## INTERNALS
+
+[https://github.com/major/MySQLTuner-perl/blob/master/INTERNALS.md](https://github.com/major/MySQLTuner-perl/blob/master/INTERNALS.md)
+
+    Internal documentation
+
+# AUTHORS
+
+Major Hayden - major@mhtx.net
+
+# CONTRIBUTORS
+
+- Matthew Montgomery
+- Paul Kehrer
+- Dave Burgess
+- Jonathan Hinds
+- Mike Jackson
+- Nils Breunese
+- Shawn Ashlee
+- Luuk Vosslamber
+- Ville Skytta
+- Trent Hornibrook
+- Jason Gill
+- Mark Imbriaco
+- Greg Eden
+- Aubin Galinotti
+- Giovanni Bechis
+- Bill Bradford
+- Ryan Novosielski
+- Michael Scheidell
+- Blair Christensen
+- Hans du Plooy
+- Victor Trac
+- Everett Barnes
+- Tom Krouper
+- Gary Barrueto
+- Simon Greenaway
+- Adam Stein
+- Isart Montane
+- Baptiste M.
+- Cole Turner
+- Major Hayden
+- Joe Ashcraft
+- Jean-Marie Renouard
+- Stephan GroBberndt
+- Christian Loos
+
+# SUPPORT
+
+Bug reports, feature requests, and downloads at http://mysqltuner.pl/
+
+Bug tracker can be found at https://github.com/major/MySQLTuner-perl/issues
+
+Maintained by Major Hayden (major\\@mhtx.net) - Licensed under GPL
+
+# SOURCE CODE
+
+[https://github.com/major/MySQLTuner-perl](https://github.com/major/MySQLTuner-perl)
+
+    git clone https://github.com/major/MySQLTuner-perl.git
+
+# COPYRIGHT AND LICENSE
+
+Copyright (C) 2006-2021 Major Hayden - major@mhtx.net
+
+For the latest updates, please visit http://mysqltuner.pl/
+
+Git repository available at https://github.com/major/MySQLTuner-perl
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+    See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see &lt;https://www.gnu.org/licenses/>.
diff --git a/mysqltuner.pl b/mysqltuner.pl
index a9992ff..46c7400 100755
--- a/mysqltuner.pl
+++ b/mysqltuner.pl
@@ -1349,7 +1349,7 @@ sub log_file_recommendations {
         $numLi++;
         debugprint "$numLi: $logLi"
           if $logLi =~ /warning|error/i and $logLi !~ /Logging to/;
-        $nbErrLog++ if $logLi =~ /error/i and $logLi !~ /Logging to/;
+        $nbErrLog++  if $logLi =~ /error/i and $logLi !~ /Logging to/;
         $nbWarnLog++ if $logLi =~ /warning/i;
         push @lastShutdowns, $logLi
           if $logLi =~ /Shutdown complete/ and $logLi !~ /Innodb/i;
@@ -1359,8 +1359,7 @@ sub log_file_recommendations {
 
     if ( $nbWarnLog > 0 ) {
         badprint "$myvar{'log_error'} contains $nbWarnLog warning(s).";
-        push @generalrec,
-          "Check warning line(s) in $myvar{'log_error'} file";
+        push @generalrec, "Check warning line(s) in $myvar{'log_error'} file";
     }
     else {
         goodprint "$myvar{'log_error'} doesn't contain any warning.";
@@ -2070,7 +2069,7 @@ sub get_replication_status {
           "This replication slave is not running but seems to be configured.";
     }
     if (   defined($io_running)
-        && $io_running  =~ /yes/i
+        && $io_running =~ /yes/i
         && $sql_running =~ /yes/i )
     {
         if ( $myvar{'read_only'} eq 'OFF' ) {