Executing python script from java passing arguments -


i asked days ago executing python script java. solved problem partially. now, not able pass parameter , make script anything.

my script has receive xbee frame , send serial port. tested script in shell , works fine. so, doing: sudo python script.py frame, frame sent.

now, tried same java, , fails. code is:

process p; //system.out.println(packet.tostring()); try{     stringbuffer p1 = new stringbuffer();     string[] cmd = {"/bin/bash", "-c", "echo pass | python script.py b'", packet.tostring(), "'"};       p = runtime.getruntime().exec(cmd);      bufferedreader br = new bufferedreader(new inputstreamreader(p.getinputstream()));     string s = br.readline();     p.waitfor();     p.destroy(); } catch (exception e) {}

i have add b' before argument , ' after it. packet stringbuffer string tostring method.

i need run root because uses serial port , if not, says me have not permission.

do know how it? tried write file word when run script nothing happends, makes me think doesn't run properly.


Comments

Post a Comment

Popular posts from this blog

linux - xterm copying to CLIPBOARD using copy-selection causes automatic updating of CLIPBOARD upon mouse selection -

i've tried various ways coerce xterm (versions 285 , 292) copy selection clipboard clipboard whenever press ctrl-shift-c. promising way far has been, in ~/.xresources, put this: xterm*vt100.translations: #override \ ctrl shift <keypress> c: copy-selection(clipboard) \n\ ctrl shift <keypress> v: insert-selection(clipboard) ctrl-shift-v works perfectly, copying has nuance... if restart xterm, highlighting text puts things in primary clipboard; expected, proper, default behavior. if hit ctrl-shift-c, copies current selection clipboard clipboard. the bug, however, if highlight text after first time pressed ctrl-shift-c, you'll see highlighting copies both primary and clipboard. cannot figure out how stop xterm updating clipboard upon selection... , doesn't make sense me in first place. i said, @ specific point in time, copy selection clipboard... yet starts updating automatically upon selection after doing once... anyone have workaround...
Read more

c++ - qgraphicsview horizontal scrolling always has a vertical delta -

Image
i've subclassed qgraphicsview custom canvas used in cad application. i've reimplemented qgraphicsview::wheelevent check keyboard modifiers control key and, if control key pressed, zoom. i'm trying implement horizontal scroll when user holds shift , uses wheel. the problem i'm having horizontal scrolling always scrolls 0.279. not huge problem, hugely annoying , points else being wrong. so, here questions: is right way implement horizontal scrolling? if not, is? how eliminate delta of 0.279? thanks in advance. code , sample output below void myview::zoom(int delta) { double factor = pow(1.2, delta/abs(delta)); this->scale(factor, factor); } void myview::scrollhorizontal(int level) { qpointf center = maptoscene(viewport()->rect().center()); qdebug() << "center: " << center.x() << ", " << center.y(); centeron(qpointf(center.x() - level, center.y())); } void myview::wheelevent(qwheeleve...
Read more