command

问题 I'm confused as to the difference between using a function in commands of tkinter items. say I have self.mb_BO.add_radiobutton(label= "Red", variable=self.BO, value=2, command=self.red) what is the difference in how the add statement works from this: self.mb_BO.add_radiobutton(label= "Red", variable=self.BO, value=2, command=self.red()) where func red(self) changes the color to red. And self.mb_BO.add_radiobutton(label= "Red", variable=self.BO, value=2, command=lambda: self.red()) Essentially

问题 so I am having a noob moment here, I haven't ever used the command line to run a java program before but I need to right now. The problem I am having is that when I try to run the program I get a ClassNotFoundException. My class is called OmadUpdate. I already have compiled the OmadUpdate.java file into OmadUpdate.class using the javac command. I have checked the directory and they are both definitely there, however when I run the java OmadUpdate command, it gives me an error message saying

问题 I asked a similar question here and got pretty close to what I'm looking for How to start a process from another application and then open a terminal to that process in gnu screen ...but, this doesn't quite get to what I'm after, which is starting a process in a new window (not an existing window) in an existing screen session (not a new screen session). If you are at a command prompt in a screen session, you can do this: screen [screen options] command param1 param2 But, how do you do it if

问题 I am trying to use Command and CommandParameter binding with Buttons in a WPF application. I have this exact same code working just fine in Silverlight so I am wondering what I have done wrong! I have a combo box and a button, where the command parameter is bound to the combobox SelectedItem: <Window x:Class="WPFCommandBindingProblem.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height=

问题 Here is the question. Given the url http://www.example.com , can we read the first N bytes out of the page? using wget , we can download the whole page. using curl , there is -r, 0-499 specifies the first 500 bytes. Seems solve the problem. You should also be aware that many HTTP/1.1 servers do not have this feature enabled, so that when you attempt to get a range, you'll instead get the whole document. using urlib in python. similar question here, but according to Konstantin's comment, is

问题 Here is the question. Given the url http://www.example.com , can we read the first N bytes out of the page? using wget , we can download the whole page. using curl , there is -r, 0-499 specifies the first 500 bytes. Seems solve the problem. You should also be aware that many HTTP/1.1 servers do not have this feature enabled, so that when you attempt to get a range, you'll instead get the whole document. using urlib in python. similar question here, but according to Konstantin's comment, is

问题 I've searched around a bit for similar questions, but other than running one command or perhaps a few command with items such as: ssh user@host -t sudo su - However, what if I essentially need to run a script on (let's say) 15 servers at once. Is this doable in bash? In a perfect world I need to avoid installing applications if at all possible to pull this off. For argument's sake, let's just say that I need to do the following across 10 hosts: Deploy a new Tomcat container Deploy an

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 12 months ago . I'm trying to create an app for Android that simply sends a command to an SSH server. No response needed, I just need to be able to send a command. I was wondering if there's any java library out there that I could use? No advanced stuff needed, just a pure connection to send the command. 回答1: You are

问题 I'm trying to learn to write shell scripts and use the Terminal. In Users/user/Development/linux I've got a script called sysinfo_page. So I'm in the linux folder in the terminal and I can see the sysinfo_page when I type the ls command. However, when I enter the following command: sysinfo_page > sysinfo_page.html I receive the following message: -bash: sysinfo_page: command not found How do I resolve this? 回答1: If you want to run a script file form the current directory, you have to write ./

问题 I am writing a program in Python which must communicate through SSH with a physical target, and send to this targets some commands automatically (it is for testing). I start by doing this with Paramiko and everything was perfect until I have to send several commands and when for example the second one must be execute in the context of the first (for example the first one makes cd /mytargetRep and the second one is ./executeWhatIWant ). I can't use exec_command to do so, because each exec