Openstack_notes/powerful_command_reference.txt at main · JAT117/Openstack_notes · GitHub

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Magic Powers:

yum install -y epel-release

NetworkManager
--------------
nmcli device status
nmcli connection show
nmtui

nano ~/.bashrc
-------
alias ni='ip l | grep '^\S' | cut -d: -f2'
alias gg='cd !*; ls -lsthG'
alias t ='tail -f'
alias ll='ls -lath'
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
alias gg='cd $1 ; ll'
alias ol='watch who -alp'
alias net='watch ss -tulpn'
alias sctl='systemctl status'
alias lsps='ps -elf $1 | grep $2'

.bash_profile
-------------

netstat -venputa | grep -i httpd
cat /etc/redhat-release

cat /path/to/file grep ^ /dev/null *
cat /path/to/file | egrep -v "^#|^$"
egrep -c '^flags.*(vmx|svm)' /proc/cpuinfo
virt-host-validate
systemctl list-units --type service --state running,failed
openstack-status
last | head


The best way is to use rsync over SSH

rsync -a -essh /source/ user@dest-server:/dest/

rsync -a -essh user@source-server:/source/ /dest/

My favorites options are -Pazvessh --delete :

    -a : archive mode (include a lot of default common options, including preserving symlinks)
    -z : compress
    -v : verbose : show files
    -P : show progess as files done/remaining files
    -e ssh : do rsync in ssh protocol
    --delete : delete files in the destination that are not anymore in the source


https://www.youtube.com/channel/UC-0PMn0rKV_ZOHF-qX6N3fQ/videos
https://github.com/PacktPublishing/Learning-OpenStack-Networking-Third-Edition
https://books.google.com/books?id=TMhsDwAAQBAJ&pg=PA40&lpg=PA40&dq=mariadb+memcached+network+neutron+rabbitmq&source=bl&ots=PopPfEA10d&sig=ACfU3U2-WY9xoU33b-nSOm-2YPJDNvTq3Q&hl=en&sa=X&ved=2ahUKEwjFhsaP0YXmAhVlCjQIHYSmCl4Q6AEwBXoECDAQAQ#v=onepage&q&f=true
https://www.unixtutorial.org/check-centos-version
https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/9/html/director_installation_and_usage/chap-introduction
https://www.corelan.be/index.php/2009/07/19/exploit-writing-tutorial-part-1-stack-based-overflows/
https://overthewire.org/wargames/bandit/bandit0.html


https://en.wikibooks.org/wiki/QEMU/Networking
https://developers.redhat.com/blog/2018/10/22/introduction-to-linux-interfaces-for-virtual-networking/
https://werewblog.wordpress.com/2015/12/31/create-a-virtual-network-with-qemukvm/
https://linuxconfig.org/configuring-virtual-network-interfaces-in-linux
https://developers.redhat.com/blog/2018/10/22/introduction-to-linux-interfaces-for-virtual-networking/
https://wiki.qemu.org/Documentation/Networking
https://www.cyberciti.biz/faq/howto-linux-renew-dhcp-client-ip-address/