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nobody:x:1:0:root:/root root:x:2:0:root:/root 1234:x:3:0:root:/root asdf:x:4:0:root:/root qwer:x:5:1:root:/root zxcv:x:6:0:root:/root 1,2,3,4,5,6 값 확인하기 cat /etc/passwd | cut -d ":" -f2 3번쨰 필드 중에 0이 포함된 아이들만 확인하기 cat /etc/passwd | cut -d ":" -f3 | grep "0"

pycharm 메모리 늘리기 1. pycharm -> Help -> Edit Cutom VM Options 2. Xms 변경 기존 -Xms128m -Xmx4096m -XX:ReservedCodeCacheSize=240m -XX:+UseConcMarkSweepGC -XX:SoftRefLRUPolicyMSPerMB=50 -ea -Dsun.io.useCanonCaches=false -Djava.net.preferIPv4Stack=true -Djdk.http.auth.tunneling.disabledSchemes="" -XX:+HeapDumpOnOutOfMemoryError -XX:-OmitStackTraceInFastThrow New -Xms2048m -Xmx4096m -XX:ReservedCodeCacheS..

Centos7 java 설치하기 1. 설치 1. jdk 확인 yum list java*jdk-devel[root@noel home]# yum list java*jdk-devel Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.kakao.com * extras: mirror.kakao.com * updates: mirror.kakao.com Installed Packages java-1.8.0-openjdk-devel.x86_64 1:1.8.0.252.b09-2.el7_8 @updates Available Packages java-1.6.0-openjdk-devel.x86_64 1:1.6.0.41-..

1. python slack API - 준비 1. bot 만들고 token 얻기 https://api.slack.com/apps 위의 주소로 접속 Create New App 클릭 App Name 입력 -> Development Slack Workspace 선택 -> Create App 클릭 Your Apps 클릭 -> 방금 생성한 bot 클릭 Verification Token 복사 2. slacker 설치 pip install slacker 2. python slack API - 실제로 사용해보기 1. 공통 부분 작성 from slacker import Slacker token = "Verification Token" slack = Slacker(token) 2. 채널 리스트 얻어오기 channel_li..

chrome 설치 yum 저장소 만들기 sudo vi /etc/yum.repos.d/google-chrome.repo [google-chrome] name=google-chrome baseurl=http://dl.google.com/linux/chrome/rpm/stable/$basearch enabled=1 gpgcheck=1 gpgkey=https://dl-ssl.google.com/linux/linux_signing_key.pub chrome 설치 sudo yum install google-chrome-stable chrome 버전 확인 google-chrome --version [noel@noel_server]# google-chrome --version Google Chrome 83.0.4103..

pymysql mysql timestamp select import datetime timestamp = datetime.datetime(2020, 1, 1) q = "SELECT * FROM test_table WHERE created_timestamp < %s" cursor.execute(q, (timestamp))column type 이 timestamp 라면 string으로 selct 하지 말것 timestamp = &#39;2020-01-01&#39; 오류는 발생하지 않지만 select는 불가능합니다. 꼭 datetime으로 변환해서 넣어줘야 합니다 pymysql timestamp 일부만 update 날짜는 그대로 두고 년도와 월만 update today = "2020-01" q = "UPDAT..

@GetMapping(value="/search") public String getSearchBox(ModelMap model, @ModelAttribute("searchDto") SearchDto searchDto, @RequestParam(defaultValue="1") int paging){ List searchDtoList = searchService.findSearch(searchDto); model.addAttribute("result", searchDtoList); return "admin/searchBox"; } @GetMapping(value="/test/{testId}", produces="application/json") public List testInvoke(HttpServletR..

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String timeStamp = "2019-01-01"; dateFormat.format(timeStamp);

@PersistenceContext(unitName="db") private EntityManager entityManager; public List dynamicRepository(TestSearchValue testSearchValue) { CriteriaBuilder cb = entityManager.getCriteriaBuilder(); CriteriaQuery query = cb.createQuery(TestEntity.class); Root testEntity = query.from(TestEntity.class); List predicate = makeDynamicQuery(testSearchValue, cb, testEntity); query.where(cb.and(predicate.toA..

application.yml api: test: url: 'http://localhost:8080/api' ApiInvokeService.java @Autowired public ApiService(@Value("${api.test.url}" String apiUrl) { this.apiUrl = apiUrl; } public List apiInvoke(String userId) { List apiList = new ArrayList(); URL url = new URL(apiUrl + URLEncoder.encode(userId, "UTF-8") + "call"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setUs..