UB、RH、LD、FB……
Some time ago a friend had pocketed someOpenWRTA series of tutorials，Told some OP advanced usage，Of course，In this regard, I would lose a slightly raised。but，Recent quarters because of poor network quality(Mainly no QoS annoying)So I dug out my box eating ash under therg100a-aa，What poor fellow had not the memory that，I was just poor 30M。
But not closed[……]
A long time did not update kali，Today, taking advantage of the updated virtual machine，We want to open the system with a new look，The results did not expect to encounter the problem of FIG.。
First, use the GUI to update occurred 404，Then use apt-get the error key expires。
Ok，At all events，This is not a conflict deb，Nor is the source could not be parsed，You need to do is update the key。
Use the following commands to a new[……]
Last article we talked about fragmentedThe official version of Deepin 2014.2 virtual machine installation experience，Then there is the experience of reporting time，Because just installed，Talk about a feeling of it to get started，Then feel after long-term use of the route to see the situation reported good。
On the back said we just adjust the resolution，Then the system will pop-up update，Point to open a look，I found this
I opened the QQ try next，[……]
I vaguely remember seven years ago began to chase the open source，At that time there Everest，There are red flags，There Kylin。Chinese felt the future is excellent Linux distribution，Myself have removed from the Linux-ren，Baidu Post Bar, Baidu know, and so a series of related Linux Forum，Fun virtually all mass market niche Linux distributions，Engage in a dual system，Multi-system all kinds of tricks ...... Unfortunately, ah Unfortunately,，In fact, no one[……]
Using the Linux desktop system time，Many of my friends will encounter network manager prompts "Device unmanaged" situation。
In this case, the network can access the Internet，But the network manager - general nature is hard to force the Network Manager，But life and death does not display state。
In fact，at this time，The system uses another set of network management scheme，And this program[……]
Currently on the market more common 3、4Layer firewalls，Called the network layer firewalls，There Layer 7 firewall，In fact, the gateway proxy layer
forTCP/IPofSeven-layer modelSpeaking，The third layer is the network layer，Three-layer firewall in this layer of the source and destination addresses for testing。But for the seven firewalls，Whether you source port or destination port，What is the source or destination address，We will have to check all your stuff。[……]
1、Modify / etc / profile
1.1 :First, set the environment variable in this file;
1.2:Run the export command to load the new environment variable settings good environment variable.
#vim /etc/profile
2、Modifying .bashrc
# vim /root/.bashrc
export PATH=”Variable Path
3、straight[……]
To talk about unix / linux for file operations in these functions，These functions for linux basically meet our requirements in any document，
First talk about the open function
In linux you want to operate on the file must first open the file and then the corresponding processing，Why should we do it? That is because the process and not directly manipulate files between，To process the document operation[……]
UnixLittle understanding of architecture
It can be defined as a software operating system in the strict sense，The software controls the computer hardware resources，Provider operating environment for personal understanding of hardware and software wealthy。We call such software kernel (kernel），It is relatively small，Located in the center of the environment
Kernel system call interface is called (system calls) Shared libraries built on system calls[……]