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 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) }'

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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