ptomaszek

DECLARE
    V_VAL NUMBER;
BEGIN
    FOR V_I IN 1..50
        LOOP
            EXECUTE IMMEDIATE 'SELECT BATCH_STEP_EXECUTION_SEQ.NEXTVAL FROM DUAL' into V_VAL;
        END LOOP;
END;

-- or

ptomaszek

echo 'export PATH=~/bin:$PATH' >> ~/.bash_profile
source ~/.bash_profile

ptomaszek

sudo -u otheruser bash -l
#or one-liner
sudo -n -u otheruser -- /usr/bin/bash -c "export JAVA_HOME=/apps/java/jdk1.8.0_281; cd /apps/hello/; ./install.sh"

ptomaszek

jdk/bin/keytool -genkey -keyalg RSA -noprompt -alias tomcat -dname "CN=localhost, OU=NA, O=NA, L=NA, S=NA, C=NA" -keystore tomcat8/selfsigned.jks -validity 9999 -storepass changeme -keypass changeme

ptomaszek

# Call page expecting particular HTTP resp code; if condition not met, retry every 15s for 2 minutes

HEALTH_CHECK_URL=https://example.com
EXPECTED_HEALTH_CHECK_HTTP_RESPONSE_CODE=200

timeout 120 bash -c 'while [[ "$(curl -s -o /dev/null -w ''%{http_code}'' '$HEALTH_CHECK_URL')" != '$EXPECTED_HEALTH_CHECK_HTTP_RESPONSE_CODE' ]]; do sleep 15; done' || false

echo $? # 0 for success, 1 for failure

ptomaszek

import lombok.SneakyThrows;
import org.apache.commons.lang3.StringUtils;

import java.io.File;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

ptomaszek

Similar to: https://www.reddit.com/r/bashonubuntuonwindows/comments/mgpla3/xfce4_works_when_xserver_is_in_multiple_windows/

Error: 
/usr/bin/startxfce4: X server already running on display
Unable to open display.
xfce4-panel: Cannot open display: .


Solution:

ptomaszek

/**
 * Definition from LeetCode
 */
public class TreeNode {
    int val;
    TreeNode left;
    TreeNode right;

    TreeNode() {
    }

ptomaszek

import com.github.benmanes.caffeine.cache.AsyncCacheLoader
import com.github.benmanes.caffeine.cache.AsyncLoadingCache
import com.github.benmanes.caffeine.cache.Caffeine
import groovy.util.logging.Slf4j
import io.vertx.core.Context
import io.vertx.core.Future
import io.vertx.core.Promise
import io.vertx.core.Vertx

import java.time.Duration

ptomaszek

//curl --write-out --http2 --insecure https://localhost:8083

import io.vertx.core.Vertx
import io.vertx.core.http.HttpServerOptions
import io.vertx.core.net.PemKeyCertOptions

def vertx = Vertx.vertx()

vertx
        .createHttpServer(new HttpServerOptions()