dmesg中的systemd服务描述

时间:2018-02-06 09:37:19

标签: linux systemd

我已经创建了一个基本的systemd服务文件来启动一个应用程序。该文件如下所示:

[Unit]

Description=Starting a Basic Application

[Service]

ExecStart=/usr/bin/app_linux 0x040000

[Install]

WantedBy=multi-user.target

当我运行systemctl status basic.service时,我能够看到它正在运行。 我想在dmesg中看到此服务文件的描述。

2 个答案:

答案 0 :(得分:0)

将您的服务放在/ etc / systemd / system中,然后将其称为basic.service,现在通过以下命令启用它" systemctl enable basic.service" (这应该创建一个链接ln -s' /etc/systemd/system/basic.service'' /etc/systemd/system/multi-user.target.wants/basic.service' ;),现在重启你的电路板,现在检查你的dmesg输出。您可以更改输出应链接的位置,以便为StandardOutput选项引用link

public class MainActivity extends AppCompatActivity {
    ExpandableListView ev_list;
    List> lv_country = new ArrayList<>();
    CustomAdapter customAdapter;
    EditText et_search;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.activity_main);
        getSupportActionBar().hide();
        init();

    }

    private void init() {
        ev_list = (ExpandableListView) findViewById(R.id.ev_list);
        et_search = (EditText) findViewById(R.id.et_search);

        fn_arraylist();
        customAdapter = new CustomAdapter(lv_country, getApplicationContext());
        ev_list.setAdapter(customAdapter);

        ev_list.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
            @Override
            public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
                return true; // This way the expander cannot be collapsed
            }
        });

        for (int i = 0; i < customAdapter.getGroupCount(); i++) {
            ev_list.expandGroup(i);
        }


        et_search.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void afterTextChanged(Editable editable) {

                if (et_search.getText().toString().length() == 0) {
                    customAdapter = new CustomAdapter(lv_country, getApplicationContext());
                    ev_list.setAdapter(customAdapter);

                    for (int i = 0; i < customAdapter.getGroupCount(); i++) {
                        ev_list.expandGroup(i);
                    }
                } else {

                    List> lv_search = new ArrayList<>();

                    for (int i = 0; i < lv_country.size(); i++) {
                        List> lv_searchstate = new ArrayList<>();

                        List> lv_state = (List>) lv_country.get(i).get("State");
                        for (int j = 0; j < lv_state.size(); j++) {
                            if (lv_state.get(j).get("Name").toString().toLowerCase().contains(et_search.getText().toString())) {
                                lv_searchstate.add(lv_state.get(j));
                            }
                        }

                        if (lv_searchstate.size() != 0) {
                            HashMap hashMap_search = new HashMap<>();
                            hashMap_search.put("Name", lv_country.get(i).get("Name").toString());
                            hashMap_search.put("State", lv_searchstate);

                            lv_search.add(hashMap_search);
                        }
                    }


                    customAdapter = new CustomAdapter(lv_search, getApplicationContext());
                    ev_list.setAdapter(customAdapter);

                    for (int i = 0; i < customAdapter.getGroupCount(); i++) {
                        ev_list.expandGroup(i);
                    }


                }

            }
        });


    }

答案 1 :(得分:-2)

  After copying my service file to "/etc/systemd/system/basic.service"

  [Unit]

  Desciption=Starting a Basic Application

  DefaultDependencies=no

  [Service]

  Type=idle

  ExecStart=/usr/bin/app_linux 0x40000

  ExecStop=/usr/bin/killall app_linux

  rebooted and i am able to see message in dmesg