npm's pretty magical

    node-cmd

    5.0.0 • Public • Published

    node-cmd

    Node.js commandline/terminal interface.

    Simple commandline, terminal, or shell interface to allow you to run cli or bash style commands as if you were in the terminal.

    Run commands asynchronously, and if needed can get the output as a string.

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    RIAEvangelist

    GitHub info :
    node-cmd GitHub Release GitHub license node-cmd license open issues for node-cmd on GitHub

    Package details websites :

    This work is licenced via the MIT Licence.

    Methods

    method arguments functionality returns
    run command, callback runs a command asynchronously args for callback err,data,stderr
    runSync command runs a command synchronously obj {err,data,stderr}

    Examples

    //*nix
    
        var cmd=require('node-cmd');
    
    //*nix supports multiline commands
        
        cmd.runSync('touch ./example/example.created.file');
    
        cmd.run(
            `cd ./example
    ls`,
            function(err, data, stderr){
                console.log('examples dir now contains the example file along with : ',data)
            }
        );
    //Windows
    
        var cmd=require('node-cmd');
    
    //Windows multiline commands are not guaranteed to work try condensing to a single line.
        
        const syncDir=cmd.runSync('cd ./example & dir');
    
        console.log(`
        
            Sync Err ${syncDir.err}
            
            Sync stderr:  ${syncDir.stderr}
    
            Sync Data ${syncDir.data}
        
        `);
    
        cmd.run(`dir`,
            function(err, data, stderr){
                console.log('the node-cmd dir contains : ',data)
            }
        );
    //clone this repo!
    
        var cmd=require('node-cmd');
        
        const syncClone=cmd.runSync('git clone https://github.com/RIAEvangelist/node-cmd.git');
    
        console.log(syncClone);
        

    Getting the CMD Process ID

        var cmd=require('node-cmd');
    
        var process=cmd.run('node');
        console.log(process.pid);

    Running a python shell from node

    const cmd=require('node-cmd');
    
    const processRef=cmd.run('python -i');
    let data_line = '';
    
    //listen to the python terminal output
    processRef.stdout.on(
      'data',
      function(data) {
        data_line += data;
        if (data_line[data_line.length-1] == '\n') {
          console.log(data_line);
        }
      }
    );
    
    const pythonTerminalInput=`primes = [2, 3, 5, 7]
    for prime in primes:
        print(prime)
    
    `;
    
    //show what we are doing
    console.log(`>>>${pythonTerminalInput}`);
    
    //send it to the open python terminal
    processRef.stdin.write(pythonTerminalInput);

    Output :

    >>>primes = [2, 3, 5, 7]
    for prime in primes:
        print(prime)
    
    
    2
    3
    5
    7
    

    Install

    npm i node-cmd

    DownloadsWeekly Downloads

    59,954

    Version

    5.0.0

    License

    MIT

    Unpacked Size

    6.83 kB

    Total Files

    4

    Last publish

    Collaborators

    • riaevangelist
    • mayberex