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Java memory dump on outofmemory

-XX:+PrintGCDateStamps
-verbose:gc
-XX:+PrintGCDetails
-Xloggc:"<path to log>"
-XX:+UseGCLogFileRotation
-XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M
-XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=<path to dump>`date`.hprof

-XX:+PrintGCApplicationStoppedTime
-XX:+PrintGCDetails
-XX:+PrintSafepointStatistics
-XX:PrintSafepointStatisticsCount=1
-XX:+SafepointTimeout
-XX:SafepointTimeoutDelay=<ms before timeout log is printed>

Pense-bête

 psql -p 5555 -h 10.0.10.2 -U <user> -d <database

Create user

 create database mydb;
 create user myuser with encrypted password 'mypass';
 grant all privileges on database mydb to myuser;

List databases

\list or \l : list all databases
\c dbname or connect dbname : connect to database
\dt : list all tables in the current database
\d+ <table> : describe table

Size of database

SELECT pg_size_pretty(pg_database_size('db'));

Pense-bête

mysql -u username -p database_name < file.sql

Tutoriel complet pour réparer le boot windows.
Un bon résumé

"too many open files"
Parce que ulimit et /etc/security/limits.conf ne fonctionne pas avec systemd :

[Service]
Type=simple
User=farmer
....
LimitNOFILE=500000:500000
LimitNPROC=500000:500000

Sans oublier :

systemctl daemon-reload

J'utilisais des outils web, mais ça c'est pas mal aussi...
Pour linux :

https://emage.js.org/
https://www.xnview.com/fr/xnconvert/

Problème de boot UEFI :

diskpart
list disk
list volumes
sel disk 1
list partitions
sel volume X
assign letter=C
remove letter=D

bcdboot c:\Windows /l fr-fr /s r: /f UEFI

Et aussi :
https://www.diskpart.com/fr/articles/erreur-boot-bcd-windows.html

Parce que je m'y perds...

A script that checklist actions for privilege escalation from

https://book.hacktricks.xyz/linux-unix/linux-privilege-escalation-checklist

And follow by :

https://github.com/mzet-/linux-exploit-suggester

And again :

https://github.com/liamg/traitor

Hostname from local ip

sudo apt-get install nbtscan
nbtscan <ip>

Des icônes

via https://sebsauvage.net/links/?qS3LsA

J'aime bien cette "mise à jour involontaire" :

https://investir-sur-internet.com/comment-acheter-des-actions-en-ligne/action-orange/

Regardez bien les petites images :)
"75% des comptes d'investisseurs de détails perdent ..." juste en dessous de "Le meilleur coutier est .... bla bla bla"

Ah ah. C'est illégal, attention ! ...

List of word, passwords...

Rockyou is long

hydra -l root -P /usr/share/wordlists/rockyou.txt 192.168.1.105 -t 4 ssh

Hydra also accepts wordlists for users and targets. They can be specified with the -L flag for users, and the -M flag for IPs.

With list of user :

hydra -L /usr/share/wordlists.rockyou.txt -P /usr/share/wordlists/rockyou.txt -M Documents/ip.txt -t 4 ssh

Checklist lorsqu'un nouveau pc ne démarre pas.

Not enough space on disk /tmp but still available space : inodes may be full :

df --inodes

find / -xdev -printf '%h\n' | sort | uniq -c | sort -k 1 -n

Java options precedence

 java -Xmx1G -XX:+PrintFlagsFinal -Xmx2G 2>/dev/null | grep MaxHeapSize

... ça me donne envie d'essayer !!
Minecraft/Minetest à la maison !

Execute mongo command in bash (mongo-client package must be installed)

echo "db.reports.drop();" | mongo -u <username> -p <passwors> <mydatabase> --authenticationDatabase admin