=== G I T ===

.) stash git stash list git stash push -m 'ZTG-7064, 1st commit' # stash changes git stash push -u -m 'ZTG-7064, 1st commit' # untracked files stashed as well git stash apply --index 0 # apply but do not remove the state from the stash list git stash drop stash@{0} # Remove, single, stash entry git stash show [-p] git stash show -p stash@{0} > stash.diff git apply stash.diff git diff stash@{0} git diff stash@{0} stash@{1}

.) create branch git checkout -b iss53 # create a branch and switch to it at the same time

.) delete branch git push -d origin <branch_name> # delete remote branch git branch -d <branch_name> # delete local branch

.) prune branches (deleting references to non-existing remote branches) git remote prune origin - where origin comes from ... $ git remote -v $ origin https://gitserver.com/user/repository.git (fetch)

.) rename branch git branch -m new_branch # Rename branch locally (if in the branch to be renamed) git branch -m old_branch new_branch # Rename branch locally (if not in the branch to be renamed)
git push origin :old_branch # Delete the old branch
git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote

.) merge specific files from another branch git checkout source_branch file_to_merge

.) squash commits git merge --squash branch_name

.) checkout by date git checkout git rev-list -n 1 --first-parent --before="2020-07-27 13:37" master

.) clone tag v3.6
git clone --branch v3.6 https://github.com/tecris/docker.git

.) tag (http://git-scm.com/book/en/v2/Git-Basics-Tagging) git tag -a <tag_name> <commit_sha> -m 'message' git tag -a v0.1.2 -m 'tag v0.1.2' git push origin v0.1.2 git checkout tags/v0.1.2 git checkout master git show v0.1.2 # show tag data git tag -n # show tag message (for annotated tags) git ls-remote --tags --ref origin # show tag git sha

.) delete tag git tag -d v3.6.2 git push origin -d v3.6.2

.) rename tag git tag new_tag old_tag git push --tags git tag -d old_tag git push origin --delete old_tag

.) show last commit git show

.) log git log --pretty=format:"%h %an %s" git cherry -v master # show only logs from branch git log --name-status # full path names and status of changed files git log --name-only # full path names of changed files git log --stat # abbreviated pathnames and a diffstat of changed files git log --oneline # show one line only

.) compare changes for a file between revisions: git diff revision_1 revision_2 -- File_name

.) kind of info git remote show origin git remote -v

.) revert uncommitted changes .) revert single file git checkout -- filename .) revert all files git reset --hard .) revert git submodules git submodule update --init

.) revert the reverted merge (https://www.drupaldump.com/gitlab-revert-reverted-merge) git pull master git checkout -b new_branch git revert -m 1 37dsd67a48

.) remove last commit .) remove a commit done locally git reset --soft HEAD^ .) remove a commit already pushed git revert

.) revert git revert commit_ref_sha git revert HEAD # revert last commit

.) revert local commits .) moves the current branch backward by two commits and keep work done git reset --soft HEAD2 .) moves the current branch backward by two commits and deletes work done git reset --head HEAD2

.) remove all files added since last commit git clean -fd

.) numeric versioning .) git rev-list HEAD --count -) http://programmers.stackexchange.com/questions/141973/how-do-you-achieve-a-numeric-versioning-scheme-with-git Use tags to mark commits with version numbers: .) git tag -a v2.5 -m 'Version 2.5' Push tags upstream—this is not done by default: .) git push --tags Then use the describe command: .) git describe --tags --long This gives you a string of the format: .) v2.5-0-deadbeef .) v2.5 - last tag .) 0 - number of commits since last tag .) deadbeef - SHA of HEAD

.) editor .) git config --global core.editor "vim"

.) Github - Bitbucket mirroring .) deanclatworthy.com/2013/01/how-to-avoid-relying-on-github-mirror-your-repository

.) Get github repos: .) $ curl --silent https://api.github.com/users/tecris/repos |grep '"git_url"' | awk -F': "' '{print $2}' | sed -e 's/",//g'

=== MONOREPO === https://github.com/babel/babel/blob/master/doc/design/monorepo.md

=== K U B E C T L ===

$ kubectl api-resources $ kubectl -n fluxcd get secret $ kubectl -n fluxcd delete secret fluxcd-git-deploy $ kubectl -n rango create secret generic regcred --from-literal=username='django' --from-literal=password='!adminf9%6#76' --dry-run=client -o yaml | kubectl apply -f - $ kubectl -n fluxcd create secret generic fluxcd-git-deploy --from-file=identity=./id_rsa_bitbucket --dry-run=client -o yaml | kubectl apply -f - $ kubectl -n rango create secret generic postgrez --from-literal=password='!adminf9%6#76' $ kubectl -n rango get secret postgrez --output="jsonpath={.data.password}" | base64 -d $ kubectl -n rango get secret ingress-tls-cert -o json $ kubectl -n rango get secret ingress-tls-cert --output="jsonpath={.data.tls.crt}" | base64 -d # alpine $ kubectl -n rango get secret ingress-tls-cert --output="jsonpath={.data.tls.crt}" | base64 --decode # ubuntu

$ kubectl -n rango get po --field-selector=status.phase=Running $ kubectl -n rango get po --field-selector=status.phase=Running -o name -l app=test-service | xargs kubectl -n rango describe

$ kubectl -n rango rollout restart deployment test-service

=== H E L M ===

$ helm -n rango get values --revision=13 test-service $ helm -n rango get values --revision=24 test-service -o json |jq [.resources] $ helm -n rango history test-service $ helm -n rango list $ helm -n rango status test-service

=== jq === $ az vm list | jq -r ".[] | select(.name == "some_name") | .id" $ az vm list | jq -r ".[] | {name,id} | select(.name == "some_name") | .id"

$ az vm list | jq -r "[.[] | {name,id} | select(.name == "some_name")][0] | .id" $ az vm list | jq -r ".[].name | select(startswith("who_am_i"))" $ az vm list | jq -r ".tags.id" $ az vm list | jq -r ".tags | sort[] | select(startswith("tag_to_search"))" $ az vm list | jq ".values[] | select(.display_name == "rango here") | {account_id}"

=== M A V E N ===

.) Versions plugin. (mojohaus.org/versions-maven-plugin) ..) mvn versions:display-dependency-updates # display dependencies with newer versions available. ..) mvn versions:use-latest-versions # replaces any version with the latest version. ..) mvn versions:update-properties # sets properties to the latest versions of specific artifacts. ..) mvn versions:display-plugin-updates # displays all plugins that have newer versions available.

.) https://www.artifact-listener.org # email notifications when newer artifacts versions are available on Maven Central

.) Dependency plugin (maven.apache.org/plugins/maven-dependency-plugin) ..) mvn dependency:tree ..) mvn dependency:tree -Dincludes=org.springframework.kafka:spring-kafka ..) mvn dependency:analyze -DignoreNonCompile=true

.) Tidy Maven Plugin.(mojohaus.org/tidy-maven-plugin) ..) mvn tidy:pom # sort the sections of a pom.xml into the canonical order.

.) mojohaus.org/exec-maven-plugin ..) mvn exec:java -Dexec.mainClass=org.test.Main

.) archetype (maven-repository.com/archetypes)

mvn archetype:generate -Dfilter=serenity

mvn archetype:generate \
  -DgroupId=org.demo.app \
  -DartifactId=quickstart \
  -DarchetypeArtifactId=maven-archetype-quickstart \
  -DinteractiveMode=false
  
mvn archetype:generate \
  -DgroupId=org.demo.app \
  -DartifactId=wildfly-html5 \
  -DarchetypeGroupId=org.wildfly.archetype \
  -DarchetypeArtifactId=wildfly-html5-mobile-archetype \
  -DarchetypeVersion=8.2.0.Final \
  -DinteractiveMode=false

.) help for a plugin mvn help:describe -DgroupId=org.flywaydb -DartifactId=flyway-maven-plugin -Dversion=3.2.1 -Dfull=true

.) other mvn site:site mvn assembly:assembly mvn install -DskipTests mvn -Dwtpversion=2.0 eclipse:eclipse mvn eclipse:eclipse mvn eclipse:clean eclipse:eclipse -DdownloadSources=true mvn eclipse:clean mvn --dryRun release:prepare mvn release:clean mvn release:prepare

.) show project version $ mvn -q -Dexec.executable=echo -Dexec.args='${project.version}' --non-recursive exec:exec

=== F O R G E === forge -e "run forge_script.fsh" http://forge.jboss.org/document/hands-on-lab

=== G I T H U B === https://github.com/search?q=stars:%3E1&s=stars&type=Repositories // show repos with most stars

=== public ip address === .) https://api.ipify.org/

=== L I N U X === .) xargs basics -> https://shapeshed.com/unix-xargs/

.) password $ head -c32 /dev/urandom | base64

.) SSH port forwarding $ ssh -L 8888:localhost:8888 HOSTNAME and then open http://localhost:8888

.) grep .) OR Using | .) grep 'pattern1|pattern2' filename .) NOT using grep -v .) grep -v 'pattern1' filename

.) reduce pdf file size .) ps2pdf -dPDFSETTINGS=/ebook input.pdf output.pdf

.) merge pdf files .) gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=merged.pdf a.pdf b.pdf

.) search and replace $ sed -i -e 's/string1/string2/g'

.) Nice sed tutorial https://gist.github.com/un33k/1162378

.) # substitute "foo" with "bar" EXCEPT for lines which contain "baz" $ sed '/baz/!s/foo/bar/g'

.) recursive search and replace $ grep -rl matchstring somedir/ | xargs sed -i 's/string1/string2/g'

.) delete recursive svn folder #!/bin/sh echo "recursively removing .svn folders from" pwd rm -rf find . -type d -name .svn

.) search for a file with find $ find -iname *lerts-properties-service.xml $ find -iname *lerts*

.) script to rename a directory

 #! /bin/bash
 # replace directory 'com' with 'org'
 # Search and rename directories.

 for filename in `find . -type d -name com`          #Traverse all files in directory.
 do
     fname=$filename                                 # Yes, this filename needs work.
     n=`echo $fname | sed -e "s/com/org/g"`          # Substitute 
     mv "$fname" "$n"                                # Do the actual renaming.
 done   

.) Find and trace process $ ps auxww | grep java $ $ strace -p

.) List The Open Ports And The Process That Owns Them $ sudo lsof -i ..) id using port 8080 (tcp) $ sudo lsof -i TCP:8080 $ sudo netstat -lptu

.) SSH hardening -) https://www.ibm.com/developerworks/aix/library/au-sshlocks

.) one liner check port open $ nc -zvw 1 linuxfoundation.org 80

.) tail -f server/default/log/server.log | awk '{print $2"\t"$4}'

.) format json $ cat mjson.tool | jq $ python -mjson.tool j.txt

.) xml formating $ xmllint --format pom.xml > a.xml # by default xmllint uses 2 spaces for indentation, to specify a different level set XMLLINT_INDENT variable. For exmaple for 4 spaces use $ export XMLLINT_INDENT=' ';xmllint --format pom.xml > a.xml $ xmllint utility comes with libxml2-utils

.) curl (http://blogs.plexibus.com/2009/01/15/rest-esting-with-curl)

-) POST
    $ curl -i -H "accept: application/json" -X POST -d "firstName=james" http://192.168.0.165/persons/person

    where,
    i - show response headers
    H - pass request headers to the resource
    X - pass a HTTP method name
    d - pass in parameters enclosed in quotes; multiple parameters are separated by '&'
        
    The above command posts the first name "james" to the persons resource. Assuming the server creates a new person resource with first name of James, I also 
    tell the server to return a json representation of the newly created resource.

  .) Send file   
    $ curl -i -H "content-type: text/xml" -d @request.xml http://localhost:8080/ws   # send file
  .) Send json, expect json
    $ curl -i -H "content-type: application/json" -H "accept: application/json" -X POST -d '{"name":"Salvador","iso":"SLV"}' http://localhost:8080/rest/country

-) GET
    $ curl -i -H "accept: application/json" http://192.168.0.165/persons/person/1  

-) PUT
    $ curl -i -H "accept: application/json" -X PUT -d "phone=1-800-999-9999" http://192.168.0.165/persons/person/1

-) DELETE
    $ curl -i -H "accept: application/json" -X DELETE http://192.168.0.165/persons/person/1

.) Random shuffle a file $ shuf < inputfile > outputfile $ sort -R > randomsortedfile

.) Check available versions for a package $ sudo apt-cache policy ansible # check available versions for ansible

.) show process and wrap lines $ ps aux | less -S # use arrow keys, or Esc-( and Esc-), or Alt-( and Alt-) $ ps aux | most # use arrow keys, or < and > (Tab can also be used to scroll right)

.) disk space $ du -sh ./* | sort -h $ df -h $ lsblk $ ncdu

=== W E B D A V ===

cadaver https://demo.org/repository/experimental/org/demo/tns konqueror webdavs://demo.org/repository/experimental/org/demo/tns/

=== L O G 4 J === www.javaworld.com/jw-11-2000/jw-1122-log4j.html

The root category defaults to DEBUG, and following config are equivalent:

and

If no category specified for a package/class it will inherit root category. For example, messages with priority DEBUG or higher will be sent ot the FILE appender.(The FILE appender will discard messages with priority lower than ERROR) ... <appender name="FILE" ... ... ... ...

Package org.apache category set to(restricted to) INFO, all other categories are inheriting the root category (WARN). FILE appender discards messages with priority LOWER than ERROR. ... <appender name="FILE" ... ... ...

<category name="org.apache">
    <priority value="INFO"/>
</category>

<root>
    <priority value="WARN" />
    <appender-ref ref="FILE"/>
</root>

...

=== S O L A R I S === http://www.unixguide.net/sun/sunoneliners.shtml

Grep /usr/local/bin/grep or /usr/sfw/bin/ggrep

• recursive grep find . | xargs grep 'Your Grep Value'

• find file find /opt/tibco/ -name "tibe"

Tar tar cvf - /home/ebs | gzip - > ebs.tar.gz gtar xzvf somefile.tar.gz

Resource statistics for each thread of a server application. prstat -L -p 3295

=== N O D E . J S ===

https://github.com/angular-fullstack/generator-angular-fullstack https://github.com/DaftMonk/fullstack-demo https://www.npmjs.com/about

.) Chat https://github.com/sdelements/lets-chat

=== O T H E R === .) https://ozh.github.io/ascii-tables/ -> ASCII (separated)

=== D O C K E R === DNS https://github.com/tianon/rawdns

DNS with Docker (nice) --- http://www.damagehead.com/blog/2015/04/28/deploying-a-dns-server-using-docker/

Docker – a DNS server container --- http://www.monblocnotes.com/node/2074

How ubuntu:14.04.1 image is built --- http://www.monblocnotes.com/node/2072

Docker containers on desktop --- https://blog.jessfraz.com/post/docker-containers-on-the-desktop/ https://github.com/jfrazelle/dockerfiles

Email http://www.centurylinklabs.com/tutorials/killing-your-outlook-with-docker-and-davmail

=== T E C H N O === JEE http://blog.eisele.net/2015/12/a-refresher-top-10-java-ee-7-backend.html

Build number http://www.jayway.com/2012/04/07/continuous-deployment-versioning-and-git

Java properties http://owner.aeonbits.org/docs/reload/

JPA - sequence generator http://www.javabeat.net/jpa-annotations-generatedvalue-sequencegenerator-tablegenerator http://gafter.blogspot.com/2008/01/is-java-dying.html

Reflecting generics http://www.artima.com/weblogs/viewpost.jsp?thread=208860

Generics erasure http://gafter.blogspot.com/2004/09/puzzling-through-erasure-answer.html

Super Type Tokens http://www.artima.com/weblogs/viewpost.jsp?thread=206350 http://gafter.blogspot.com/2006/12/super-type-tokens.html

Factories with Generics www.developerdotstar.com/mag/articles/troche_factorychain.html

Guidelines for using volatile variables www.ibm.com/developerworks/java/library/j-jtp06197.html

Threads www.briangoetz.com/pubs.html www.baptiste-wicht.com/2010/08/java-concurrency-part-4-semaphores tutorials.jenkov.com/java-concurrency/index.html www.artima.com/insidejvm/ed2/jvm2.html

Stack and heap http://www.javatutorialhub.com/java-stack-heap.html

ThreadLocal www.ibm.com/developerworks/java/library/j-threads3.html

Understanding Java Multithreading and Read-Write Locks www.developer.com/java/article.php/951051

@XmlRootElement weblogs.java.net/blog/kohsuke/archive/2006/03/why_does_jaxb_p.html jsexton0.blogspot.com/2009/02/marshalling-and-unmarshalling-without.html

http://jaxb.java.net/guide/Customizing_Java_packages.html

Generate an XML Document from an Object Model with JAXB 2 www.devx.com/Java/Article/34069/1763/page/3

Fork and Join, Parallel Programming http://www.oracle.com/technetwork/articles/java/fork-join-422606.html

OpenMQ http://mq.java.net

Apache Qpid (Advanced Message Queueing Protocol) http://qpid.apache.org

12Factor http://12factor.net

Alternative java web frameworks sparkjava.com ratpack.io

BULK https://blog.codecentric.de/en/2011/03/automated-acceptance-testing-using-jbehave https://blog.codecentric.de/en/2012/06/jbehave-configuration-tutorial http://www.thucydides.info/docs/serenity http://en.wikipedia.org/wiki/Specification_by_example

=== S V N ===

.) tag svn copy http://subversion/project/trunk
http://subversion/project/tags/project-0.0.2
-m "Tagging the -r xx version as the X.X.X release"

.) Roll back to version 15898 svn merge -r HEAD:15898 http://subversion/svn/project/trunk .

.) Roll back to a version svn merge -rXX:YY (YY is the number of the revision you want to revert to)

.) Merge from trunk into Merge in the current directory changes that occurred in the trunk from revision 15933 to 16026 svn merge http://subversion/svn/project/trunk -r15933:16026 .

.) Ignore on 'svn status' ignore these files ..) Create file ("a_file") with file patterns svn to ignore. ..) Then run the command, svn propset svn:ignore . -F file_name ...) recursive svn -R propset svn:ignore . -F file_name ..) Edit. svn propedit svn:ignore .

.) Diff 'svn diff --diff-cmd diff -x -uw /path/to/file'

.) Set svn editor export SVN_EDITOR=vi

.) Create svn project mkdir -p test/my_project cd test/my_project mkdir -p trunk/my_module tags branches cd ../.. svn import my_project http://subversion/my_project -m "First Import"

.) svn copy http://subversion/svn/some_location http://subversion/svn/other_location -m 'a comment'

.) svn move http://subversion/svn/some_location http://subversion/svn/other_location -m 'a comment'

.) non recursive checkout svn checkout --non-recursive http://svnserver/trunk/ proj

.) Check modifications on server svn st -u

.) Show annotations (aka blame) svn blame file_name

.) Setting svn mime type to text svn propset svn:mime-type text/plain pom.xml