Download all Maven dependencies and ignore failures

mvn dependency:go-offline -fae   # without compilation

mvn install -fae

mvn install -fn

mvn clean install -Dmaven.main.skip -Dmaven.test.skip

-fae - fail at end

-fn - fail never

Get remote url for git repo

 git remote -v

Download sources for particular Maven Artifact

e.g.

mvn dependency:get -DgroupId=org.springframework -DartifactId=spring-web -Dversion=6.1.6 -Dclassifier=sources -Dpackaging=jar

kubectl basic commands

List all pods:

kubectl get pods

kubectl get pods -n <namespace>

Show logs from last pod:

kubectl logs -n <namespace> <pod> -p

Show logs from current pod:

kubectl logs -n <namespace> <pod>

# add "-f" to follow

 

Enter to bash inside pod:

kubectl -i -t <pod> -n <namespace> -- /bin/bash 

gitk usefull switches

 gitk <one_branch>...<second_branch> - show commits between branches

 gitk --all - show changes from all branches

 gitk -- some/path/to/filter - filter by path

Schedule a debugger break-point after 5 seconds on HTML page

Put inside console:

setTimeout(()=>{debugger;}, 5000)

and the whole site will freeze after 5 seconds.

Force download all maven dependencies

Force download all maven dependencies:

mvn dependency:purge-local-repository

source

Download all dependencies and repore failures at the end:

mvn -fae install -DskipTests

Download sources and javadocs:

mvn dependency:sources
mvn dependency:resolve -Dclassifier=javadoc

mvn dependency:tree -Dmaven.main.skip -Dmaven.test.skip 

source

How to use singlequote (') in AWK script in Bash shell

	echo -e "one\ntwo" | awk '{ printf("\x27%s\x27,",$0) }'

source

Remove local git branches which desn't exist on remote anymore

git remote prune --dry-run origin

PostreSQL database backup and restore

pg_dump -U db_manager --clean -d user_db > dump.sql psql -d user_db -f dump.sql

Bypass UEFI provided Windows Key

E.g. if you want to install Windows Professional Box on computer with Windows Home OEM:

1. Create bootable pendrive with Windows from DVD.

2. Create file /sources/PID.txt with content:

[PID]
Value=[youre product key here]

Recording application activity

java -XX:+UnlockCommercialFeatures -XX:+FlightRecorder -XX:StartFlightRecording=duration=60s,filename=myrecording.jfr -jar app.jar

source

Merging all commits in repo to one

Today note copied from Stack Overflow (please consider of backuping your repo before this):

git log --oneline

Copy SHA of first commit and next (it's reset your local repo state withouch changing files):

git reset --soft <SHA of first commit>

Check that everything to commit is green:

git status

Commit your changes (--amend fixes last commit), you can change commit message by adding "-m <your new message>":

git commit --amend

Push your changes:

git push --force

Custom and localized messages spring validation API

Put this code inside your web configuration:

    @Bean
    public MessageSource messageSource() {
        return new MessageSourceAutoConfiguration().messageSource();
    }
    
    @Bean(name = "validator")
    public LocalValidatorFactoryBean validator()
    {
        LocalValidatorFactoryBean bean = new LocalValidatorFactoryBean();
        bean.setValidationMessageSource(messageSource());
        return bean;
    }
     
    @Override
    public Validator getValidator()
    {
        return validator();
    }

and in validation annotation use:

@NotBlank(message = "{not.blank.message}")
private String foo;

In your classloader put file /messages_en.properties:

not.blank.message=Custom not blank message

Wykorzystanie Dynamic Proxy jako narzędzia diagnostycznego

Tylko link :)
http://pgoralik.blogspot.com/2012/08/wykorzystanie-dynamic-proxy-jako.html

Single quote and xargs in Bash

xargs strips single quote mark from input, so if you want pass some data by xargs you will se error:

user:~/$ echo "This is single quote: '" | xargs -I {} echo {}
xargs: unmatched single quote; by default quotes are special to xargs unless you use the -0 option

To do this properly it is necessary to add "-0" parameter:

user:~/$ echo "This is single quote: '" | xargs -0 -I {} echo {}
This is single quote: '

Or use sed:

user:~/$ echo "This is single quote: '" | sed "s/'/\\\\'/g" | xargs -I {} echo {}
This is single quote: '

Et voilà!

Start HTTP server to serve files from current directory

Just type:

python -m SimpleHTTPServer

or:

server -p 3000

Please install before:

npm install serve -g

PrimeFaces remoteCommand with parameters

HTML view:

<p:remoteCommand name="remoteCommandName" actionListener="#{mBean.remoteCommandActionlistener}" />

Backing bean code:

public void remoteCommandActionlistener() {
  String param1 = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("param1");
  String param2 = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("param2");
  System.out.println("param1: " + param1 + ", param2: " + param2);
}

JavaScript call:

remoteCommandName([{name: 'param1', value: 'value1'}, {name: 'param2', value: 'value2'}])

Generowanie JavaDoc z linii komend

javadoc -d destdir -subpackages package_a package_b

Wyłączenie cache HTML/JS

<meta http-equiv="pragma" content="no-cache" />
<meta http-equiv="expires" content="now" />
<meta http-equiv="last modified" content="now" />
<meta http-equiv="expires" content="0" />