terminal

问题 So essentially, I am trying to run the command "/dir/command -arg" to change the LED color on a USB device in Java. I am using Ubuntu 10.04. When I run the command from the terminal, it works just fine. However, I tried every iteration of Runtime.exec() that I could find and none of them seem to work. I then created a script with the following contents: #!/bin/bash echo "hello" /dir/command -arg when I run this from a terminal it works just fine. However when I run @Override public void run()

问题 Hi everyone I am running the following code on pseudo terminal /dev/pts/1 and I am tryin to read the contents from the terminal /dev/pts/2 . #include<stdio.h> #include<unistd.h> #include<fcntl.h> int main(){ char str[50]; int fd = open("/dev/pts/2",O_RDONLY); str[read(fd,str,20)] = '\0'; printf("%s\n",str); return 0; } anirudh@anirudh-Aspire-5920:~$ gcc test.c anirudh@anirudh-Aspire-5920:~$ ./a.out n anirudh@anirudh-Aspire-5920:~$ On the terminal /dev/pts/2 I had typed "anirudh" however it

问题 Is is possible to store an exec' output into a session variable while its running to see it's current progress? example: index.php <?php exec ("very large command to execute", $arrat, $_SESSION['output']); ?> follow.php <php echo $_SESSION['output']); ?> So, when i run index.php i could close the page and navigate to follow.php and follow the output of the command live everytime i refresh the page. 回答1: No, because exec waits for the spawned process to terminate before it returns. But it

问题 I'm trying to get a text scrolling by terminal like effect for an application I'm writing. The problem is that the textview only updates after all the text has been added. How can I get it so it updates every line? 回答1: Call textView.invalidate() to force it to redraw itself. 来源： https://stackoverflow.com/questions/5070657/terminal-like-scrolling-text-android

问题 On Mac OS X I can’t enter a pound sterling sign (£) into the Python interactive shell. * Mac OS X 10.5.5 * Python 2.5.1 (r251:54863, Jan 17 2008, 19:35:17) * European keyboard (£ is shift-3) When I type shift-3 in the Python interactive shell, I seem to invoke the previous word function, i.e. the cursor will move to the start of the last “word” (i.e. space-delimited item) typed on the line. When I’m back in the bash shell, typing shift-3 just produces a £, as expected. This version of Python

问题 I am trying to make a command line link for Sublime Text 3. If I run /Applications/Sublime\ Text.app/Contents/SharedSupport/bin/subl Sublime Text opens like normal. I then run sudo ln "/Applications/Sublime\ Text.app/Contents/SharedSupport/bin/subl" /usr/bin/subl Restart the terminal and I get this: $ ls /usr/bin/subl /usr/bin/subl $ subl -bash: subl: command not found I also tried setting in my .profile alias subl="/Applications/Sublime\ Text.app/Contents/SharedSupport/bin/subl" but I also

问题 I have simple console application in C++ written in Qt Creator 2.4.1 on Kubuntu 12.04. My app have simple menu where you choose what you want to do (using std::cin and getline() ). The problem is that I cannot input data in console in Qt Creator. So I use option "Run in terminal" (xterm). But when I want to run debugger I get "ptrace operation not allowed". So: In QtCreator console I cannot input data (debugger working) In terminal I cannot use debugger (ptrace operation not allowed) I need

问题 I'd like to be able to launch a process from a GUI application (right now I'm thinking specifically of letting an eclipse user -- possibly via a plugin -- click a button to launch a build using my organization's build system). I don't want this process to stop when I stop the parent application, and I want to be able to "switch into it" later, as though I launched it from a command line. I've seen GNU screen described as good for most of what I'm asking for, but I'm not sure about the "launch

问题 I am a newbie to Python and have created simple Appium Automation Test case for Android mobile app. I have setup Jenkins server and want to run Appium on it so there are 2 ways: Run appium server via Jenkins (We can run it using appium command but when I run appium command it just "hangs up" and showing server console continiously) Start Appium Server programmatically using Python I know we can run Appium Server programmatically using Java but don't know about python. So, if you have any idea

问题 I'm trying to interface with a device via the serial port. The device sends out a 10 byte poll as a "heartbeat" every 700ms. Everytime I read the heartbeat I have to reply with a 12 byte long response. Within this response I can request that the device sends particular data inbetween polls. The amount of data is different for different requests. Is there a way to set up the serial port such that it will always read messages in one chunk regardless of their size? My current terminal settings