jgeek

Generate ssl key:
openssl req -new -newkey rsa:2048 -nodes -keyout server.key -out server.csr

find files recursively:

find . -name "*.bak" -type f -delete
But use it with precaution. Run first:

find . -name "*.bak" -type f
----------

jgeek

$ sudo apt-get install git
--------------
1. /etc/gitconfig file: Contains values for every user on the system and
all their repositories. If you pass the option --system to git config, it
reads and writes from this file specifically.
2. ~/.gitconfig or ~/.config/git/config file: Specific to your user.
You can make Git read and write to this file specifically by passing the --
global option.
3. config file in the Git directory (that is, .git/config) of whatever repos-
itory you’re currently using: Specific to that single repository.

jgeek

https://github.com/wsargent/docker-cheat-sheet

# find PID if a container:
docker inspect --format '{{ .State.Pid }}' CONTAINER_ID

# Get the latest Docker package
$ wget -qO- https://get.docker.com/ | sh

# lists dockers images
$ sudo docker images

jgeek

heap dump:
jmap -dump:format=b,file=heap.bin <pid>

thread dump:
jstack -l JAVA_PID > jstack.out
-----------------
# java links:
https://www.reucon.com/cdn/java/
http://ghaffarian.net/downloads/Java/JDK/

jgeek

#define profile and build upon it:
 <modules>
      <module>module1</module>
      <module>module2</module>  
      ...
  </modules>
  ...
  <profiles>
     <profile>
       <id>ci</id>

jgeek

# loops:
#!/bin/bash
for i in 1 2 3 4 5
do
   echo "Welcome $i times"
done

#!/bin/bash
for i in {1..5}
do

jgeek

# verify config file
$ logstash -f first-pipeline.conf --configtest

# run logstash with config file
$ logstash -f first-pipeline.conf

# pipleline example:

$ for (( ; ; )) do nc localhost 3333 < tomcat_logs/localhost_access_log.2015-08-20.txt ;
sleep 1;done

jgeek

http://www.baeldung.com/spring-boot-application-configuration
http://jmelo.lyncode.com/spring-boot-maven-plugin-without-referencing-parent/
http://www.leveluplunch.com/blog/2014/04/16/spring-boot-swagger-springmvc-configuration/

jgeek

sqlplus / as sysdba

jgeek

http://stackoverflow.com/questions/27848548/play-framework-2-3-x-bytechunks-mp3-streaming-has-no-playback-is-not-scrollabl

With(MP3Headers.class)
public static Result test() {
    final int begin, end;
    final boolean isRangeReq;
    response().setHeader("Accept-Ranges", "bytes");
    if (request().hasHeader("RANGE")) {
        isRangeReq = true;
        String[] range = request().getHeader("RANGE").split("=")[1].split("-");