os.exit(0)
end
-if os.execute("which openssl") then
+if os.execute("which openssl >/dev/null") == 0 then
io.stderr:write("Warning: OpenSSL detected "..
"but it looks like nixio was linked against axtls\n")
os.execute("umask 0077;openssl genrsa -out '" .. defkey .. "' 2048")
-elseif os.execute("which dropbearkey && which dropbearconvert") then
+elseif os.execute("which dropbearkey >/dev/null && which dropbearconvert >/dev/null") == 0 then
os.execute("dropbearkey -t rsa -s 2048 -f /tmp/dbkey.rsa")
os.execute("umask 0077;dropbearconvert dropbear openssh /tmp/dbkey.rsa '"..defkey.."'")
os.remove("/tmp/dbkey.rsa")