打印机 fail to connect to server cups 服务器错误兆芯 打印机 连不上了####message可知 服务fail## systemd: cups.service failed.#### vim /var/log/messages Jun 17 14:08:36 10 cupsd: No valid Listen or Port lines were found in the configuration file. Jun 17 14:08:36
There is a strange printer with the following two special requirements: The printer can only print a sequence of the same character each time. At each turn, the printer can print new characters starting from and ending at any places, and will cover t
1.连接蓝牙 (第一次发表博客) 第一步打开蓝牙并搜索附近打印机设备// startSearch: function() { var that = this wx.openBluetoothAdapter({ success: function(res) { wx.getBluetoothAdapterState({ success: function(res) { if (res.available) { if (res.discovering) { wx.stopBluetoothDev
E. e-Government time limit per test:1 second memory limit per test:256 megabytes input:standard input output:standard output The best programmers of Embezzland compete to develop a part of the project called "e-Government" — the system of automa