I have a program that receive user input.
I want to run this program automatically without user interaction, and in order to do that I need to simulate key events.
How can I do such a thing?
The program I am running is partly java and partly shell.
The shell part is easily done by using:
./prog.sh <parameters (Parameters being a file containing parameters)
But the java doesn't work similarly.
How simulate unix kernel in c++..or give me a link....
View 2 Replies View RelatedI'm trying to save the output of the script I wanna run but for some reason I cant manage to do it with "script.sh > Output_4.txt"
The thing is that the script was already run and it extracted some directories so when I try to run it again (to save the log to a Output_4.txt) bash says (see screen-capture) and of course the log's empty!!!!
I wonder if there is a way to caputure all X keyboard events, blocking them from going to the window with keyboard focus?
View 4 Replies View Relatedam working an a worksheet where I need to lookup id in an other worksheet.The script works as long as I am staying on the same row. When pressing key up or enter the corresponmding lookup information is not placed on the very same row.In short terms, I want the lookup data to be enterd on the same row no matter what key I am pressing.
The script:
Private Sub Worksheet_Change(ByVal Target As Range)
Dim cfind As Range
On Error Resume Next
If Intersect(Target, Range("A:A")) Is Nothing Then Exit Sub
thisRow = ActiveCell.Row
[code].....
This example is set to Enter key procedure. So when the enter key is pressed, my current row will change by 1 so I have to compensate for that. All I want is that the data will be correctly enterd no matter what key I am pressing.
I need to simulate dijsktra's algorithm using network animator of ns2. how to write a tcl script for my code. This tcl script runs the dijsktra code and simulates its running on network animator.
View 1 Replies View Relatedhow to intercept the mouse and keyboard events in Linux,like hooking technique in Window ?
View 1 Replies View RelatedI want to capture short randomly occurring events such as Sudden Interstellar Disturbances, Lightning, ion counting, etc. To do this I wish to use the LINE-IN port. My sensor would feed a signal of less that 2 volts but could be submitted via a voltage divider. Since the sound card captures 44100 events per second this should capture events I am looking at, I think, but maybe not. I would capture the sound buffer to a string or memory buffer every second (and half second so I can prevent overwriting of its buffer, then merge the two).
Every 60 seconds (for validation) I would run "time" and count full buffer transfers in between to time events. By effectively counting characters from the beginning of the processing buffer to the beginning of the event I could further refine the "time to event". I think I could then save a decent number of values or until no data received from the processing buffer to preserve the event. This I would output with event time (to within 1/44100 sec) along with the data points captured to a file.
Except for the outputting of info to a file I think I can scan a buffer for events within a second (while LINE-IN continues capturing data on that port). I believe I have a way to handle the outputting. I am asking if any of the processing of the previous buffer would interfere with the sound cards data capture on LINE-IN? There would be no disabling of interrupts. I am presuming that system interrupts would not effect the LINE-IN data capture. Is this true?
i want to capture the mouse events (click,double..,position ) as well as keyboard events (key strokes) for every application running separately?
View 1 Replies View RelatedIs it possible to generate keyboard event "Ctrl+c" from a shell script code.? I have written a shell script to compile my application and copy it to the server home directory, inorder to run my application I need to start the server (by running a shell script). But before that I need to stop the the currently running instance of my server. To do that I have to generate a keyboard event (Ctrl+c which I press it manually). I want to automate the entire process by writing a shell script I am able to run the server just by adding ./run.sh in my shell script. But before that to stop my server can I generate a keyboard by using a shell script event(ctrL+C) to stop server.?
View 2 Replies View RelatedI've followed this guide [URL] after rebooting the system hang at:
starting ati external events daemon [OK]
This line start blinking for a while, then nothing happen. I am using a radeon hd 4225. (I'm booting with acpi=off).
I was wondering if there is some way to determine when a file finishes writing to a directory on both Windows and Linux (obviously, they will probably be two different commands). This is mostly so that, instead of constantly polling a directory for new non-temp files, I can set up a program to simply listen for the completion of a write-to-disk (it seems better to do things that way).
View 3 Replies View RelatedI want to simulate a serial protocol in user space program to test reception algorithm. The protocol is similar to UART protocol but frame format is different. The duration of 1 bit is 114,46 us. In my main function I'm creating two threads. Tx for simulating transmitting data and Rx for reception data. For measure time I use create_timer() function and signals. Each thread has its own timer and signal handler. Tx timer uses SIGUSR1 and Rx timer uses SIGUSR2. Tx thread sets the global variable and Rx reads it.
The timers are set to sample with 114,46 us period. When they reach this value signal handler should set the flag. Flag is check in thread and some operation are made. When I set the timers period for longer time (100 ms) everything works fine but when I change it to default value (114,46 us) the Rx thread doesn't receive the proper data. I am wondering if the 114,46 timer period is possible to simulate in user space? Whether the time will give me the proper resolution ? Theoretically it should provide 1 ns resolution.
I'm writing a simple bash script and I would like it to be able to to execute top (that's the easy part) and then to supply the parameters to top
programatically.
Here is the explanation:
Top is an interactive program that requires user input to do stuff, sort etc. I would like to programatically do so, for example:
top;
supply input;
get info;
quit;
Is it possible with simple bash?
I have used struct termios for reading the key pressed.
Is it possible somehow to write a C code which captures the keystrokes of the keyboard when the focus is on some other window ?
i.e. my c code is in background and there is a window on foreground and i am pressing some keys. will my c code be able to detect the keys pressed somehow ?
Ubuntu 9.10 64 bit on Dell XPS 8000
This one is really busting my balloons. I have been running my new machine for a couple of weeks now. I have either beaten most issues into submission or come up with work arounds or just learned to live with them. Except for this one...
About once a day, I cannot duplicate the circumstances, my Alt key ceases to function in Ubuntu. My left hand has over the years evolved into a specialized tool which presses Alt-Tab and Alt-F4 instinctively. When these do not work it is driving me nuts.
I have determined that this is not a hardware issue. I generally have a VMWare virtual machine running and Alt-Tab and other Alt key combinations work in the VM at the same time as they are not working on the host.
I must at a minimum logout and back in get the Alt key to be recognized again in the host.
Is there a tool which I can run to examine the key strokes as they are typed? something like the keyboard tester which runs during installation?
I am doing real time programming in C++, under Linux. I have two processes, let me say A and B. A process is being started periodically, every 5ms. B process is being started every 10ms. The process A is doing data processing. The process B is reading that data and displays it. I am confused about how to run periodically processes. The problem is that the period of process A should be as much as it is possible accurate (5ms). For the process B it isn't so important. I have created independent processes, each in one .cpp file, and I am starting them from bash file. Is that OK? I don't have to make child processes in order to have parallel processes?
View 1 Replies View Relatedhow can I measure time of N processes and N threads and then compare this time to prove that threads are faster than processes. understanding C code, or also for some good way to measure time of N processes and N threads for C.
View 5 Replies View RelatedI have 2 completely different processes A and B (they do not have any relationship) suppose A opens a file with file descriptor 4 and B opens another file with file descriptor 5
Can process A use the fd 5 (i.e using the file object of processs B) by any means..if suppose i let the fd 4 of process A to point to the file object of process B(fd 5) will it work? is it safe?
I have my code with my fork in a server and each time a client connects one more process is created. i use this code for the handling of zombies
void sig_chld(int signo){//Diadikasia gia tin diagrafi twn 'zombies'
signal( SIGCHLD, sig_chld );//signal gia ton entopismo tou zombie
pid_t pid;
[code]....
but i need the server to kill each zombie after the client is disconnecting and not to have to press ctrl+c
How to switch between processes when debugging with gdb?
View 2 Replies View Relatedhow to even start this Perl script. I have the following processes:
Command used to get this info:
ps aux --forest | grep -e process_name -e ksh | awk '{if ($1 == "user1" && $1 != "root" && $1 != "UID" && $1 != "xfs" && $1 != "mfg" && $1 != "mfgnet") print $0}'
Processes
user1 2819 0.0 0.0 4272 612 ? S Nov17 0:00 \_ -pksh-ksh
user1 2820 0.0 0.0 64956 1584 pts/833 Ss+ Nov17 0:00 \_ -ksh
[code]....
I need a way to kill off the pids 2819, 2820 because they do not have a process tied to them like pids 2918, 2922 and 6657. The way it works is peek shell (pid 2918)is opened then it starts a ksh (pid 2922) session then from there the end user runs a command (pid 6657).
I work on Linux for ARM processor for cable modem. There is a tool that I have written (as the job demands) that sends/storms customized UDP packets using raw sockets. I form the packet from scratch so that we have the flexibility to play with different options. This tool is mainly for stress testing routers.
The details are here.
I actually have multiple interfaces created. Each interface will obtain IP addresses using DHCP. This is done in order to make the modem behave as virtual customer premises equipment (vcpe).
When the system comes up, I start those processes that are asked to. Every process that I start will continuously send packets. So process 0 will send packets using interface 0 and so on. Each of these processes that send packets would allow configuration (change in UDP parameters and other options at run time). Thats the reason I decide to have separate processes.
I start these processes using fork and excec from the provisioning processes of the modem.
The problem now is that each process takes up a lot of memory. Starting just 3 such processes, causes the system to crash and reboot.
I have tried the following:- 1-I have always assumed that pushing more code to the Shared Libraries will help. So when I tried moving many functions into shared library and keeping minimum code in the processes, it made no difference to my surprise.
2-I also removed all arrays and made them use the heap. However it made no difference. This maybe because the processes runs continuously and it makes no difference if it is stack or heap?
3-I suspect the process from I where I call the fork is huge and that is the reason for the processes that I make result being huge. I am not sure how else I could go about. say process A is huge -> I start process B by forking and excec. B inherits A's memory area. So now I do this -> A starts C which inturn starts B will also not help as C still inherits A?. I used vfork as an alternative which did not help either. I do wonder why.
reduce the memory used by each independent child processes.
the wrong part of the forum but basically im working on a project and getting no where what so ever and i was wondering if i could get your help. Basically i have to create two scripts do:
The parent script which is going to:
o spawn several child processes.
o keep track of the progress of the child processes.
[code]...
I am building a queue system (in C on CentOS 5) where each directory queue has a number of process instances 'watching' it. I have a root-permission queue supervisor process which does all the forking, and the instance processes give up root as their first action. For max security each queue is accessible to a different set of users and groups.
I need to keep the RAM requirements as low as possible, so I am relying heavily on copy-on-write (since all memory writes are to shmget() shared memory)
Each process presently dlopen's the libraries it requires after fork, but I'm wondering if I would gain by performing the dlopen before forking a number of instances which all require the same libraries.
Any pointers to mid-level tutorials on dlopen and fork internals would be most appreciated: this is about my third post anywhere since I converted to Linux, but I just can't find the answer to this anywhere online.
How do you list processes, get a process's std(in|out|err) stream, or wait until a process is finished in C?
View 3 Replies View RelatedIf a process forks its child and communicate with the child using pipe, do closing the write end of the pipe and terminating the writing process have the same effect?
View 3 Replies View RelatedThe ipcs command shows the facilities of IPC in Linux, but it does not shows the processes that communicating to each others. How can I list the processes, which is currently communicating in IPC ?
View 6 Replies View RelatedUser 1 and User 2 each start a mono process with sudo:
"sudo mono user1.exe" "sudo mono user2.exe"
Each user has a kill.sh in their directory, which is being called by user1.exe/user2.exe to kill the process.
The script itself is
ps aux | grep 'mono user1.exe' | awk '{print $1}' | xargs kill
which in theory should pull *only* the PID of "mono user1.exe" and kill only that. The problem: It kills any and every single instance of mono that is running on my system, every userx.exe thats open. I am confused, as a simple "ps aux | grep 'mono user1.exe'" does only return the mono user1.exe process and not the others. "ps aux | grep 'mono'" returns them all though. how I can modify that script so that it only kills the specific process? Would "pkill -9 -f 'mono MCuser1.exe'" work as well - or would it too kill every instance of mono? I cant do a lot more of trial and error, its not good I am killing those instances accidently...
As an assignment i was doing a program to create two process using fork and pass messages between them using message queue.Did it worked well until my friend tried to copy it using scp.suddenly all hell broke loose as processes without ran syncronisation ie. in tech terms the process just wont wait wen a message queue is empty.it keeps on executing randomly.but after a reboot .. everything worked fine. until again i tried to do scp on my system on purpose. and again the program just went mad.
View 3 Replies View Related