Check the memory information, CAT/proc/meminfo. Similarly, check the CPU information. CAT/proc/cpuinfo sometimes has such questions. For example, if the 4-core CPU is a 2-core CPU * dual-core, or 1 CPU * quad core? There is a simple method: the number of processor, the number of cores, and the number of CPUs, depending on the physical ID + 1 of the last Processor
For example:
processor : 0vendor_id : GenuineIntelcpu family : 6model : 23model name : Pentium(R) Dual
Linux dynamic link library Inclusion Vulnerability
Description
Nebula is a virtual machine used to exercise privilege escalation in Linux. Its 15th level Level15 provides such a vulnerable program flag15
sh-4.2$ ls -ltotal 7-rwsr-x--- 1 flag15 level15 7161 2011-11-20 21:22 flag15sh-4.2$ whoamilevel15
The setuid program vulnerability must be exploited to escalate permissions from level15 to flag15 and execute/bin/getflag.
2. Vulnerability Mining
This is a classic dynamic link library hijackin
Description
Nebula is a virtual machine for Linux to exploit the vulnerability exercise, and its 15th Level15 provides such a vulnerable program FLAG15sh-4.2$ ls-ltotal 7-rwsr-x---1 flag15 level15 7161 2011-11-20 21:22 flag15sh-4.2$ whoamilevel15The SETUID program is required to exploit the vulnerability, from user level15 to User flag15, execute/bin/getflag.2. Vulnerability MiningThis problem is a classic dynamic link library hijacking topic, first with strace observation flag15Execve ("./
. py install
Decompress cpyrit-cuda-0.4.0.tar.gz
Tar-xzvf cpyrit-cuda-0.4.0.tar.gz
Cd cpyrit-cuda-0.4.0
Here we need to make some changes, edit setup. py, and set the 35th rows
For path in ('/usr/local/cuda', '/opt/cuda '):
Change
For path in ('/usr/local/cuda', '/usr/lib/nvidia-cuda-toolkit', '/opt/cuda '):
Otherwise the installation program cannot find nvcc
Then install
Python setup. py build
Python setup. py install
SSE is a new generation (of course a few years ago) CPU Instruction Set proposed by Intel after MMX, which was first applied to PIII series CPUs. Now we have supported Intel PIII, P4, Celeon, Xeon, AMD Athlon, duron, and other series of CPUs. The updated SSE2 instruction set only supports the P4 series CPU, which is one of the reasons why this article is about SSE rather than sse2. Another reason is that th
','/opt/cuda'):
Otherwise the installation program cannot find nvccThen install
python setup.py build
python setup.py install
After installation, run
pyrit list_cores
We should be able to see the GPU.
#1: 'CUDA-Device #1 'GeForce 8400 GS''
#2: 'CPU-Core (SSE2)'
#3: 'CPU-Core (SSE2)'
#4: 'CPU-Core (
;...Do something this assigns a value to I....return i*15;
When you use "/g6", the target code is generated:
Program code:mov eax, DWORD PTR _i$[esp-4]Imul EAX, 15
When "/g7" is used, a faster (but unfortunately longer) code is generated that does not use Imul (multiply) instructions, and it takes only 14 cycles to execute on Pentium 4. The target code is as follows:Program code:
mov ecx, DWORD PTR _i$[esp-4]mov eax, ecxSHL EAX, 4Sub eax, ECXThe second optimization option is "/arch:[argument
generation of pentum mmx cpu, AMD K5, and K6 system CPU (socket7 pin.
I686-pentum 2 after the Intel system CPU and K7 after the CPU level belongs to this 686 level.
You can query your CPU level through the/proc/cpuinfo file.
Ii. View CPU Information
We can view CPU information through the/proc/cpuinfo file.
[Root @ qs-wgdb-1 proc] # more/proc/cpuinfo
Processor: 0
Vendor_id: GenuineIntel
Cpu family: 6
Model: 44
Model name: Intel (R) Xeon (R) CPU E5630 @ 2.53 GHz
Stepping: 2
Cpu
://www.bindshell.net/tools/johntheripper/john-1.7.2-bp 17-mpi8.tar.gz
Extract and run the make command from the src directory (if your computer has insufficient resolution, try to use the make | less command ).Cluster @ server :~ /Source $ tar-zxf john-1.7.2-bp17-mpi8.tar.gCluster @ server :~ /Source $ cd john-1.7.2-bp17-mpi8/src/Cluster @ server :~ /Source/john-1.7.2-bp17-mpi8/src $ make
Now you will see a list of options.
To create John the Ripper, Type
Keep the system empty
The required syste
specified, the compiler uses/GB, or "mixed" optimization mode, by default. In the 2002 and 2003 versions of Visual C + +. NET,/GB is equivalent to/g6, which is optimized for Intel Pentium Pro, Pentium II, and Pentium III.
An example of an improvement when using/G7 is to better select the instructions for the Intel Pentium 4 when performing integer multiplication with a constant multiplier. For example, take the following code as an example:
int i; ... // Do something that assigns a value to i
Many children's shoes want to give their old computer installation Win8 system to try to know whether the hardware configuration to meet the requirements, in fact, the minimum configuration of WIN8 system requirements is not very high, if your computer to meet the configuration requirements of the following diagram, installation Win8 system without pressure.
But if you want to run the WIN8 system smoothly, you need more memory and hard disk storage space ~ The following small series for you t
system empty
The required system is as follows:Linux, x86 with MMX linux-x86-mmxLinux-x86-sse Linux, x86 with SSE2 (recommended)Linux-x86-any Linux, x86Linux-x86-64 Linux, AMD x86-64, 64-bit native w/SSE2 (recommended)Linux-x86-64-mmx Linux, AMD x86-64, 32-bit with MMX
I found linux-x86-sse2 works best on my Intel-based workstation.Cluster @ server :~ /Source/jo
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