linux

Kill a process that listens on 12345

sudo kill $(sudo lsof -t -i:12345)

cat ids_to_execute | xargs -P 24 -I % command that can contain spaces and --flags %

sudo dmidecode | grep -A 9 "System Information"

ssh-keygen -t rsa -b 4096 -C "me@email.some.domain"

eval "$(ssh-agent -s)"

ssh-add ~/.ssh/id_rsa

sudo apt-get install xclipFi

xclip -sel clip < ~/.ssh/id_rsa.pub

Sometimes there might be a firewall preventing you to perform direct ssh. Or you might be outside of target network.

ssh -J [jump address] [target address]

Host [jump host id]
Hostname [jump host]

Host [target host identifier]
Hostname [target host name]
ProxyJump [[user]@][jump host id]

Then you can

ssh [[user]@][target host identifier]

ssh-keygen -lf /etc/ssh/ssh_host_ecdsa_key.pub

ssh-keygen -lf id_rsa.pub

export PS1="\[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\[\033[01;33m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ "

Usually, you are interested in:

TX - sent, RX - received

Usually, you are interested in:

fsck /dev/dev_name

Ctrl+R

Ctrl+Alt+Shift+R

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