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I have frequency generator connected to serial port i give it command to switch frequencies using Fxx command.
i have set of different frequencies and want to automate it like
1.F040 for 3 minutes
2.F041 for 3 minutes
3.F042 for 3 minutes
No delay between should switch immediately after 3 minutes
can use any windows software. i don't know macros/scripting please answer in easy to understand.
i am using eltima Serial Port Monitor, and Tera Term softwares.
there is option in eltima serial port monitor to send files but no resources how to write that file
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Unfortunately, I don't know what program is running on my CentOS 7 that is attacking brute-force through SSH.
What commands should I use to find the program or the ssh command executor?
An attempt to brute-force account passwords over SSH/FTP by a machine in your domain or in your network has been detected. Attached are the host who attacks and time / date of activity. Please take the necessary action(s) to stop this activity immediately. If you have any questions please reply to this email.
I used tcpdump and I expected the executor to also log the command, which it didn't do
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I have 3 monitors with different refresh rate and I want to play games on the monitor with the highest refresh rate. Can I do it without cutting its refresh rate down to match the other monitor's refresh rate?
That is possible.
FYI:
Monitor's aren't dependent on each other's FPS. You can have 3 monitor's with each its own refresh rate. There is no such thing as "cutting its refresh rate down". You simply need to set them up correctly within your OS's settings.
As long as your monitor is correctly set-up and it's refresh rate is set at its max. Within the game(s)'s options, you need to specify the monitor that you want to use ( I assume the one with the highest FPS).
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Closed 2 years ago.
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For an ethernet connection between 2 points which will be used as point to point communication (for embedded devices). Is internet connection, hubs or switches are really necessary? Or can we still send and receive data from one MCU to another one by using ethernet without using any internet connection, hubs or switches?
There's certainly no need for an Internet connection.
If you want to connect two computers together directly, then you will need to use a crossover cable rather than a patch cable unless the devices you are using support auto MDI-X.
Putting a cheap hub between them will probably be simpler.
No, they are not necessary. We ofen do this between either two of "product board", "FPGA board", and "PC" when debugging ethernet Tx/Rx issues.
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Closed 8 years ago.
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My computer has two users. So can I install two different operating system for each user?
Just like windows for user1 and ubuntu for user2?
Possible with GRUB http://wiki.ubuntuusers.de/GRUB
But only if it's not a problem if one user can boot up into the other OS. ( he couldnt do anything because he has no password. )
Yes, it's possible. If you use a encryption tool with a secure bootloader like DiskCryptor, you can even password-protect one operating system and boot into an alternate operating system if the password isn't entered.
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Closed 8 years ago.
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so I am planning to make a network analyzer using Perl. But before I start I have to answer this question, can a Perl program actually sniff packets in multiple NICs simultaneously? a feature of the program im going to make is that it needs to sniff the packets in the whole LAN within a switch. Is this possible in Perl?
Sniffing packets in the whole lan is not possible. It is only possible if your switch supports it. Many swith has an option to copy all traffic to one of its port for monitoring/sniffing.
http://en.wikipedia.org/wiki/Port_mirroring
http://www.miarec.com/knowledge/switches-port-mirroring