深海游弋的鱼 – 第 14 页

ubuntu 16.04/ubuntu 17.10下解决wireshark权限问题

ubuntu 16.04/ubuntu 17.10下使用wireshark可能会遇到如下权限问题：

Couldn’t run /usr/bin/dumpcap in child process: Permission denied

1	Couldn’t run /usr/bin/dumpcap in child process: Permission denied

也有可能列表中找不到我们抓包的网卡。

可以使用如下方法解决：

1.添加wireshark用户组

$ sudo groupadd wireshark

1	$ sudo groupadd wireshark

2.将dumpcap更改为wireshark用户组

$ sudo chgrp wireshark /usr/bin/dumpcap

1	$ sudo chgrp wireshark /usr/bin/dumpcap

3.让wireshark用户组有root权限使用dumpcap

$ sudo chmod 4755 /usr/bin/dumpcap

1	$ sudo chmod 4755 /usr/bin/dumpcap

4.将需要使用的用户名（一般都是当前登陆用户）加入wireshark用户组

$ sudo gpasswd -a `whoami` wireshark

1	$ sudo gpasswd -a `whoami` wireshark

参考链接

ubuntu下解决wireshark权限问题

NVIDIA TX2 (Ubuntu 16.04)上安装CUDA 8.0

使用如下方式安装：

$ cd ~ 

$ wget http://developer.download.nvidia.com/devzone/devcenter/mobile/jetpack_l4t/013/linux-x64/cuda-repo-l4t-8-0-local_8.0.84-1_arm64.deb

$ sudo dpkg -i cuda-repo-l4t-8-0-local_8.0.84-1_arm64.deb

$ sudo apt-get update

$ sudo apt-get install cuda-toolkit-8-0

$ cd ~

$ wget http://developer.download.nvidia.com/devzone/devcenter/mobile/jetpack_l4t/013/linux-x64/cuda-repo-l4t-8-0-local_8.0.84-1_arm64.deb

$ sudo dpkg -i cuda-repo-l4t-8-0-local_8.0.84-1_arm64.deb

$ sudo apt-get update

$ sudo apt-get install cuda-toolkit-8-0

至于如何获取最新的NVIDIA TX2上使用的CUDA 8.0版本的下载地址，请访问Jetson Download Center，下载目前最新的JetPack 3.1。执行之后在存储目录下的repository.json中找到最新的下载链接即可。当然也可以让JetPack 3.1自动下载完成最新的CUDA 8.0版本到指定目录。

NVIDIA TX2 (Ubuntu 16.04)上安装ROS

首先编辑安装源

$ sudo vim /etc/apt/sources.list

1	$ sudo vim /etc/apt/sources.list

找到如下内容

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://ports.ubuntu.com/ubuntu-ports/ xenial main restricted
deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ports.ubuntu.com/ubuntu-ports/ xenial-updates main restricted
deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-updates main restricted

## Uncomment the following two lines to add software from the 'universe'
## repository.
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
# deb http://ports.ubuntu.com/ubuntu-ports/ xenial universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial universe
# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-updates universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-updates universe

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-backports main restricted
# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-backports main restricted

deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security main restricted
deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security main restricted
# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security universe
# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security multiverse
# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security multiverse

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to

# newer versions of the distribution.

deb http://ports.ubuntu.com/ubuntu-ports/ xenial main restricted

deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial main restricted

## Major bug fix updates produced after the final release of the

## distribution.

deb http://ports.ubuntu.com/ubuntu-ports/ xenial-updates main restricted

deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-updates main restricted

## Uncomment the following two lines to add software from the 'universe'

## repository.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu

## team. Also, please note that software in universe WILL NOT receive any

## review or updates from the Ubuntu security team.

# deb http://ports.ubuntu.com/ubuntu-ports/ xenial universe

# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial universe

# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-updates universe

# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-updates universe

## N.B. software from this repository may not have been tested as

## extensively as that contained in the main release, although it includes

## newer versions of some applications which may provide useful features.

## Also, please note that software in backports WILL NOT receive any review

## or updates from the Ubuntu security team.

# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-backports main restricted

# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-backports main restricted

deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security main restricted

deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security main restricted

# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security universe

# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security universe

# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security multiverse

# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security multiverse

开启universe源，修改为：

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://ports.ubuntu.com/ubuntu-ports/ xenial main restricted
deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ports.ubuntu.com/ubuntu-ports/ xenial-updates main restricted
deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-updates main restricted

## Uncomment the following two lines to add software from the 'universe'
## repository.
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://ports.ubuntu.com/ubuntu-ports/ xenial universe
deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial universe
deb http://ports.ubuntu.com/ubuntu-ports/ xenial-updates universe
deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-updates universe

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-backports main restricted
# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-backports main restricted

deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security main restricted
deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security main restricted
# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security universe
# deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security multiverse
# deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security multiverse