// 1. 연결된 ttyUSB Path 확인 usb 1-1.2 // usb 1-1.4 pi@Teon:~ $ dmesg | grep ttyUSB // 2. usb-serial rules 수정 pi@Teon:~ $ sudo nano /etc/udev/rules.d/10-usb-serial.rules SUBSYSTEM=="tty", ATTRS{idProduct}=="6001", ATTRS{idVendor}=="0403", ATTRS{devpath}=="1.2", SYMLINK+="ttyUSBa" SUBSYSTEM=="tty", ATTRS{idProduct}=="6001", ATTRS{idVendor}=="0403", ATTRS{devpath}=="1.4", SYMLINK+="ttyUSBb" // 3. 저장내용..
udevadm info /dev/ttyUSB0
sudo nano /etc/sdg/lxsession/LXDE-pi/autostart
.Net 5 Api return value list all same value Error public class Rca { public string A{ get; set; } public string B{ get; set; } } public List rList() { List RTN = new List(); Rca _RTN = new Rca(); for(int i = 0; i < 10; i++) { _RTN.A = "a" +i.ToString(); _RTN.B = "b" +i.ToString(); RTN.Add(_RTN); } return RTN; } _________________________________ PostMan result: { "A": "a9", "B": "b9", }, { "A": "..
MSSQL 2019 Encrypt / Decrypt 대칭키 암호화 사용 (AES_256) /* -- 테이블 생성 Create Table RTable ( R_ID VARCHAR(20), -- R_Value VARCHAR(20), -- R_Var varbinary(256) NOT NULL -- 구분 ) -- drop master key Create Master key Encryption by Password = '비밀번호입력' -- drop Certificate mCertify Create Certificate mCertify with Subject = 'keyCert', EXPIRY_DATE = '2099-12-01'; -- 만료일자 go -- drop symmetric key mCKey Create Sy..
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0644 for '/Users/kkkkk/.ssh/id_rsa' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. Load key "/Users/kkkk/.ssh/id_rsa": bad permissions ubuntu@xxx.xxx..
dotnet ef migrations add Initial dotnet ef migrations remove 삭제 오류메시지: The migration '20220518102320_Initial' has already been applied to the database. Revert it and try again. If the migration has been applied to other databases, consider reverting its changes using a new migration instead. 해결 --> 1. dotnet ef database update 0 2. dotnet ef migrations remove 업데이트 해주고 삭제. 오류 메시지: The name 'Initi..
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