How to execute an external program from within Node.js?
var exec = require(‘child_process’).exec; exec(‘pwd’, function callback(error, stdout, stderr) { // result });
command
Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
There are several questions/issues here, so I’ll repeat each section of the poster’s text, block-quoted, and followed by my response. What’s the preferred syntax, and why? Or are they pretty much interchangeable? I would say that the $(some_command) form is preferred over the `some_command` form. The second form, using a pair of backquotes (the “`” … Read more
Echoing the last command run in Bash?
Bash has built in features to access the last command executed. But that’s the last whole command (e.g. the whole case command), not individual simple commands like you originally requested. !:0 = the name of command executed. !:1 = the first parameter of the previous command !:4 = the fourth parameter of the previous command … Read more
How to open the command prompt and insert commands using Java?
I know that people recommend staying away from rt.exec(String), but this works, and I don’t know how to change it into the array version. rt.exec(“cmd.exe /c cd \””+new_dir+”\” & start cmd.exe /k \”java -flag -flag -cp terminal-based-program.jar\””);
node.js execute system command synchronously
Node.js (since version 0.12 – so for a while) supports execSync: child_process.execSync(command[, options]) You can now directly do this: const execSync = require(‘child_process’).execSync; code = execSync(‘node -v’); and it’ll do what you expect. (Defaults to pipe the i/o results to the parent process). Note that you can also spawnSync now.
Command to run a .bat file
“F:\- Big Packets -\kitterengine\Common\Template.bat” maybe prefaced with call (see call /?). Or Cd /d “F:\- Big Packets -\kitterengine\Common\” & Template.bat. CMD Cheat Sheet Cmd.exe Getting Help Punctuation Naming Files Starting Programs Keys CMD.exe First thing to remember its a way of operating a computer. It’s the way we did it before WIMP (Windows, Icons, Mouse, … Read more
How to bind WPF button to a command in ViewModelBase?
<Grid > <Grid.ColumnDefinitions> <ColumnDefinition Width=”*”/> </Grid.ColumnDefinitions> <Button Command=”{Binding ClickCommand}” Width=”100″ Height=”100″ Content=”wefwfwef”/> </Grid> the code behind for the window: public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); DataContext = new ViewModelBase(); } } The ViewModel: public class ViewModelBase { private ICommand _clickCommand; public ICommand ClickCommand { get { return _clickCommand ?? (_clickCommand … Read more
PHP shell_exec() vs exec()
shell_exec returns all of the output stream as a string. exec returns the last line of the output by default, but can provide all output as an array specifed as the second parameter. See http://php.net/manual/en/function.shell-exec.php http://php.net/manual/en/function.exec.php
How do I ignore files in Subversion?
(This answer has been updated to match SVN 1.8 and 1.9’s behaviour) You have 2 questions: Marking files as ignored: By “ignored file” I mean the file won’t appear in lists even as “unversioned”: your SVN client will pretend the file doesn’t exist at all in the filesystem. Ignored files are specified by a “file … Read more
Git alias with positional parameters
A shell function could help on this: [alias] files = “!f() { git diff –name-status \”$1^\” \”$1\”; }; f” An alias without ! is treated as a Git command; e.g. commit-all = commit -a. With the !, it’s run as its own command in the shell, letting you use stronger magic like this. UPD Because … Read more