D4R4’s gists

D4R4 / .htaccess

Created March 10, 2023 11:53

Here's the htaccess code to allow everything in CSP


	<ifModule mod_headers.c>
	Header set Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" env=HTTPS
	Header set X-XSS-Protection "1; mode=block"
	Header set X-Content-Type-Options nosniff
	Header set X-Frame-Options DENY
	Header add Content-Security-Policy "default-src * data: blob: filesystem: about: ws: wss: 'unsafe-inline' 'unsafe-eval' 'unsafe-dynamic'; script-src * data: blob: 'unsafe-inline' 'unsafe-eval'; connect-src * data: blob: 'unsafe-inline'; img-src * data: blob: 'unsafe-inline'; frame-src * data: blob: ; style-src * data: blob: 'unsafe-inline'; font-src * data: blob: 'unsafe-inline';"
	</ifModule>

D4R4 / cpu.sh

Created February 25, 2023 10:25

CPU performance metrics and tuning

	uname -a
	lsb_release -a
	lscpu \| grep "MHz".
	sudo dmidecode -t processor \| grep "Speed"
	lshw -c cpu \| egrep "capacity\|size"
	sudo lshw -c cpu \| egrep "capacity\|size"
	head /sys/devices/system/cpu/cpu0/cpufreq/scaling_*

	yum install -y powertop
	powertop

D4R4 / ram_usage.sh

Last active January 14, 2023 09:10

List users by RAM usage

	ps aux \| awk '{print $6/1024 " MB \t\t" $1 "\t\t" $11}' \| sort -n \| tail -n 50 \| tac

D4R4 / onlyoffice_docker.sh

Created January 14, 2023 09:08

Setup an ONLYOFFICE docker instance to go with Tuleap enterprise

	sudo docker run -i -t -d -p 2443:443 \

	-e JWT_SECRET=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\

	-v /app/onlyoffice/DocumentServer/logs:/var/log/onlyoffice \

	-v /app/onlyoffice/DocumentServer/data:/var/www/onlyoffice/Data \

	-v /app/onlyoffice/DocumentServer/lib:/var/lib/onlyoffice \

D4R4 / add_sender.ps1

Created November 4, 2022 13:02

Add accepted senders to delivery management section of Exchange office 365 gorups. not available throught the GUI

	Set-UnifiedGroup "[email protected]" –AcceptMessagesOnlyFrom @{add="[email protected]"}
	Set-UnifiedGroup "[email protected]" -AcceptMessagesOnlyFromSendersOrMembers @{add="[email protected]"}

D4R4 / disable_gnome_tracker

Created June 17, 2022 08:37

Kill and disable gnome trackers in rhel

	### VERY careful here... point is to surgically remove tracker processes
	kill $(ps aux \| grep 'tracker' \| awk '{print $2}')


	echo "Hidden=true" >> /etc/xdg/autostart/tracker-extract.desktop
	echo "Hidden=true" >> /etc/xdg/autostart/tracker-miner-apps.desktop
	echo "Hidden=true" >> /etc/xdg/autostart/tracker-miner-fs.desktop
	echo "Hidden=true" >> /etc/xdg/autostart/tracker-miner-user-guides.desktop
	echo "Hidden=true" >> /etc/xdg/autostart/tracker-store.desktop
	dbus-launch --exit-with-session gsettings set org.freedesktop.Tracker.Miner.Files crawling-interval -2

D4R4 / mail-on-session.sh

Last active March 4, 2022 17:32

Send email on ssh sessions, useful to put in .bashrc, Requires sendemail package to be installed


	UZR=`who \| cut -d"(" -f2 \| cut -d")" -f1`
	if [ "$UZR" != "" ]; then
	sendemail -f '[email protected]' -t '[email protected]' -s '10.10.10.10' -u "Alert: Root Access on `hostname` from $UZR" -m "at `date`" > /dev/null 2>&1
	sendemail -f '[email protected]' -t '[email protected]' -s '10.10.10.10' -u "Alert: Root Access on `hostname` from $UZR" -m "at `date`" > /dev/null 2>&1
	fi

D4R4 / loginctl.sh

Created November 15, 2021 10:50

Unlock gnome sessions which sometimes become stuck at login screen

loginctl unlock-session [id], where [id] is the session id you get by typing loginctl list-sessions

D4R4 / 365_exchange_group.ps1

Created October 29, 2021 12:02

Make O365 group created in Teams appear in user's Exchange Groups tab

Set-UnifiedGroup -Identity "SCALINX Digital Team" -HiddenFromExchangeClientsEnabled:$false

D4R4 / recover_stuck_process.sh

Created October 25, 2021 18:20

Recover process with stuck fd call, from superuser.blog

	# Find process information
	ps aux \| grep <name>
	strace -p <pid>

	ls -l /proc//fd
	lrwx-- 1 sanket sanket 64 Feb 5 23:00 0 ->; /dev/pts/19
	lrwx-- 1 sanket sanket 64 Feb 5 23:00 1 ->; /dev/pts/19
	lrwx-- 1 sanket sanket 64 Feb 5 22:59 2 ->; /dev/pts/19
	...
	lrwx-- 1 sanket sanket 64 Feb 5 23:00 11 -> socket:[102286]

Dara Ardalan D4R4