diff --git a/check_smart/check_smart b/check_smart/check_smart
index 5eff58e..7a392d6 100644
--- a/check_smart/check_smart
+++ b/check_smart/check_smart
@@ -53,23 +53,25 @@
 # Dec 10, 2021: Claudio Kuenzler - Sec fix in path for pseudo-devices, add Erase_Fail_Count_Total, fix NVMe perfdata (6.12.0)
 # Dec 10, 2021: Claudio Kuenzler - Bugfix in interface handling (6.12.1)
 # Dec 16, 2021: Lorenz Kaestle - Bugfix when interface parameter was missing in combination with -g (6.12.2)
+# Apr 27, 2022: Claudio Kuenzler - Allow skip temperature check (--skip-temp-check) (6.13.0)
+# Apr 27, 2022: Peter Newman - Better handling of missing or non-executable smartctl command (6.13.0)
 
 use strict;
 use Getopt::Long;
 use File::Basename qw(basename);
 
 my $basename = basename($0);
-my $revision = '6.12.2';
+my $revision = '6.13.0';
 
 # Standard Nagios return codes
 my %ERRORS=('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4);
 
 
-$ENV{'PATH'}='/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin';
+my @sys_path = qw(/usr/bin /bin /usr/sbin /sbin /usr/local/bin /usr/local/sbin);
 $ENV{'BASH_ENV'}='';
 $ENV{'ENV'}='';
 
-use vars qw($opt_b $opt_d $opt_g $opt_debug $opt_h $opt_i $opt_e $opt_E $opt_r $opt_s $opt_v $opt_w $opt_q $opt_l $opt_skip_sa);
+use vars qw($opt_b $opt_d $opt_g $opt_debug $opt_h $opt_i $opt_e $opt_E $opt_r $opt_s $opt_v $opt_w $opt_q $opt_l $opt_skip_sa $opt_skip_temp);
 Getopt::Long::Configure('bundling');
 GetOptions(
                           "debug"         => \$opt_debug,
@@ -87,6 +89,7 @@ GetOptions(
         "w=s" => \$opt_w, "warn=s"        => \$opt_w,
         "l"   => \$opt_l, "ssd-lifetime"  => \$opt_l,
 			  "skip-self-assessment" => \$opt_skip_sa,
+			  "skip-temp-check" => \$opt_skip_temp,
 );
 
 if ($opt_v) {
@@ -102,7 +105,7 @@ if ($opt_h) {
 my ($device, $interface) = qw// // '';
 if ($opt_d || $opt_g ) {
         unless($opt_i){
-				print "must specify an interface for $opt_d using -i/--interface!\n\n" if $opt_d;
+                print "must specify an interface for $opt_d using -i/--interface!\n\n" if $opt_d;
                 print "must specify an interface for $opt_g using -i/--interface!\n\n" if $opt_g;
                 print_help();
                 exit $ERRORS{'UNKNOWN'};
@@ -181,8 +184,19 @@ if ($device eq "") {
     exit $ERRORS{'UNKNOWN'};
 }
 
+my $smart_command = undef;
+foreach my $path (@sys_path) {
+	if (-x "$path/smartctl") {
+		$smart_command = "sudo $path/smartctl";
+		last;
+	}
+}
+
+if (!defined($smart_command)) {
+	print "UNKNOWN - Could not find executable smartctl in " . join(", ", @sys_path) . "\n";
+	exit $ERRORS{'UNKNOWN'};
+}
 
-my $smart_command = 'sudo smartctl';
 my $exit_status = 'OK';
 my $exit_status_local = 'OK';
 my $status_string = '';
@@ -670,10 +684,12 @@ foreach $device ( split("\\|",$device) ){
 			if($current_temperature){
 				if($max_temperature){
 					push (@perfdata, "temperature=$current_temperature;;$max_temperature") if $opt_d;
-					if($current_temperature > $max_temperature){
-						warn "(debug) Disk temperature is greater than max ($current_temperature > $max_temperature)\n\n" if $opt_debug;
-						push(@error_messages, 'Disk temperature is higher than maximum');
-						escalate_status('CRITICAL');
+					unless($opt_skip_temp) {
+						if($current_temperature > $max_temperature){
+							warn "(debug) Disk temperature is greater than max ($current_temperature > $max_temperature)\n\n" if $opt_debug;
+							push(@error_messages, 'Disk temperature is higher than maximum');
+							escalate_status('CRITICAL');
+						}
 					}
 				}
 				else{
@@ -793,6 +809,7 @@ sub print_help {
         print "  -d/--device: a physical block device to be SMART monitored, eg /dev/sda. Pseudo-device /dev/bus/N is allowed.\n";
         print "  -g/--global: a glob pattern name of physical devices to be SMART monitored\n";
         print "       Example: '/dev/sd[a-z]' will search for all /dev/sda until /dev/sdz devices and report errors globally.\n";
+        print "       Example: '/dev/sd*[a-z]' will search for all /dev/sda until /dev/sdzzzz etc devices and report errors globally.\n";
         print "       It is also possible to use -g in conjunction with megaraid devices. Example: -i 'megaraid,[0-3]'.\n";
         print "       Does not output performance data for historical value graphing.\n";
         print "Note that -g only works with a fixed interface (e.g. scsi, ata) and megaraid,N.\n";
@@ -810,6 +827,7 @@ sub print_help {
         print "  -s/--selftest: Enable self-test log check\n";
         print "  -l/--ssd-lifetime: Check attribute 'Percent_Lifetime_Remain' available on some SSD drives\n";
         print "  --skip-self-assessment: Skip SMART self-assessment health status check\n";
+        print "  --skip-temp-check: Skip temperature comparison current vs. drive max temperature\n";
         print "  -h/--help: this help\n";
         print "  -q/--quiet: When faults detected, only show faulted drive(s) (only affects output when used with -g parameter)\n";
         print "  --debug: show debugging information\n";
diff --git a/check_smart/control b/check_smart/control
index b48f60a..ef7686d 100644
--- a/check_smart/control
+++ b/check_smart/control
@@ -1,6 +1,6 @@
 Homepage: https://github.com/Napsty/check_smart
 Uploaders: Jan Wagner <waja@cyconet.org>
 Watch: https://raw.githubusercontent.com/Napsty/check_smart/master/check_smart.pl \$revision\ =\ '([0-9.]+)'
-Version: 6.12.2
+Version: 6.13.0
 Description: plugin to check SMART status of ATA/SCSI/NVMe drives, returning any usable metrics as perfdata.
 Recommends: perl-modules, monitoring-plugins-common | nagios-plugins-common