diff --git a/hackshell.sh b/hackshell.sh
index 4fe5992..4371499 100755
--- a/hackshell.sh
+++ b/hackshell.sh
@@ -639,6 +639,7 @@ bin() {
     a="${arch}"
     [ "$arch" == "x86_64" ] && arch_alt="amd64"
     [ "$arch" == "aarch64" ] && arch_alt="arm64"
+    [ -z "$arch_alt" ] && arch_alt="$arch"
     hs_mkxhome
     bin_dl() {
         local dst="${XHOME}/${1:?}"
@@ -1044,7 +1045,7 @@ _warn_rk() {
 
     [ -n "$tainted" ] && {
         echo -e "${CR}Non standard LKM detected${CF} (/proc/sys/kernel/tainted=$n)"
-        cat "/proc/modules" 2>/dev/null | while read -r m; do
+        command -v modinfo >/dev/null && cat "/proc/modules" 2>/dev/null | while read -r m; do
             m="${m%% *}"
             str="$(modinfo "$m")"
             { [[ "$str" != *"Build time autogenerated kernel"* ]] || [[ "$str" != *"intree:         Y"* ]]; } && {
@@ -1215,7 +1216,7 @@ loot_cmd() {
     local str
 
     shift 1
-    str="$("$@" 2>/dev/null)"
+    str="$("$@" 2>/dev/null)" || return #cmd failed
     [ -z "$str" ] && return
 
     echo -e "${CB}${name}${CDY}${CF}"
@@ -1573,7 +1574,7 @@ cn() {
     x509="$(timeout "${HS_TO_OPTS[@]}" 2 openssl s_client -showcerts -connect "${1:?}:${2:-443}" 2>/dev/null </dev/null)"
     # Extract CN
     str="$(echo "$x509" | openssl x509 -noout -subject 2>/dev/null)"
-    [[ "$str" == "subject"* ]] && [[ "$str" != *"/CN"* ]] && {
+    [[ "$str" == "subject"* ]] && [[ "$str" == *"/CN"* ]] && {
         str="$(echo "$str" | sed '/^subject/s/^.*CN.*=[ ]*//g')"
         echo "$str"
     }