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kamal's questions

Martin Hope
kamal
Asked: 2016-02-02 08:35:13 +0800 CST
  • 15

I am using 32-bit Ubuntu 14.4 LTS. How can I tell if my computer can run a 64-bit os? I am confused between architecture and CPU op-mode.

An excerpt from /proc/cpuinfo:

$ grep " lm " /proc/cpuinfo
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx **lm** constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm xsave lahf_lm dtherm tpr_shadow vnmi flexpriority

Output from lscpu:

kamal@kamal-G31T-M7:~$ lscpu
Architecture:          i686
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list    0, 1
Thread(s) per core:    1
Core(s) per socket:    2
Socket(s):             1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 23
Stepping:              10
CPU MHz:               2793.084
BogoMIPS:              5586.16
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              2048K
…
cpu-architecture
Martin Hope
kamal
Asked: 2015-12-20 22:43:33 +0800 CST
  • -1

Last night my internet connection was slow so I canceled Gimp installation (4.5 Mb/53Mb). But today when I try to click on Gimp install button in Ubuntu Software Center, this error came up "Requires installation of untrusted packages". What should I do now?

software-installation
Martin Hope
kamal
Asked: 2015-01-25 04:07:27 +0800 CST
  • 1

I am new to Ubuntu (I installed it just 4 days ago) and want to know something about network ports: which port is opened or closed?

I read many answers about this field, but I am unable to understand how to identify ports (opened or closed). When I run this command sudo netstat -ntlup I get the following output:

screenshot

Could you tell me, which port is open or at risk? How to close open ports using firewall rules?

networking