DevOps Portal | Linux

$ sudo apt update; notify-send "Обновление завершено" "Получение обновлений завершено"

$ sudo apt install inotify-tools

$ git add .

$ git add file.txt demo.txt
Затем создайте новый stash:
```bash
$ git stash

git stash -m "<имя>"

$ git stash list

git stash pop

git stash apply

git stash apply <stash>

git stash pop --index <stash>

git stash branch <branch-name> <stash>

git stash drop <stash>

git stash clear

$ icdiff config-1 config-2

$ find ~/ -type f -exec ls -lah {} \;

$ find . -name "*.txt" -exec wc {} \; -exec du -sh {} \;

docker volume create jenkins_home

docker run -d --name jenkins -p 8080:8080 -v jenkins_home:/var/data jenkins/jenkins

docker run -d --name jenkins -p 8080:8080 -v jenkins_home:/var/data:ro jenkins/jenkins

docker run -d -v /data nginx

docker run -d -p 80:80 -v $(pwd):/data nginx

docker run -d -p 80:80 --mount type=bind,source=$(pwd),target=/data nginx

docker volume ls

docker volume inspect jenkins_home

docker volume rm jenkins_home

docker volume prune

$ cat data.txt | grep "No such file"

$ cat data.txt |& grep "No such file"

$ cmd-1  2>&1  |  cmd-2

pipeline {
    parameters {
        string(name: 'ENVIRONMENT', defaultValue: 'dev', description: 'Целевое окружение для деплоя (dev, staging, prod)')
        choice(name: 'BUILD_TYPE', choices: ['Release', 'Debug'], description: 'Тип сборки')
    }
}

stages {
    stage('Build') {
        steps {
            echo "Сборка для окружения: ${params.ENVIRONMENT}"
            echo "Тип сборки: ${params.BUILD_TYPE}"
        }
    }
}

$ nohup tar -cf archive.tar file1 file2

$ cat nohup.out

$ grep -C3 filename

docker system df

$ find . -type d -empty -exec rmdir -v {} +

$ find . -type d -empty -delete

watch -d -n 1 sensors

$ lsd -lah

Defaults insults

sudo apt update

Take a stress pill and think things over.
You fucking stupid shit!
My mind is going. I can feel it.
Realy? Are you on drugs?

Defaults  badpass_message="Ты там в порядке, вообще?"

#!/bin/bash

messages=("Неверный пароль! Твой мозг там как, цел?"
          "Еще раз и я в логах всё твоё позорище сохраню."
          "Ты серьезно? Ну хоть капслок проверь...")

echo "${messages[$RANDOM % ${#messages[@]}]}"

helm template -f values.yaml .0 | kubepug --k8s-version v1.22.0 --input-file=-

- Linux
- DNS
- АРМ
- Go

docker ps -a

docker inspect <container_id>

docker inspect -f '{{.State.Status}}' <container_id>

docker logs <container_id>

bash 
type test

enable -n test
type test

enable test

apt/yum install bash-builtins

mkdir --version

enable -f /usr/lib/bash/mkdir mkdir
mkdir --version

type mkdir

lsof +fg -p $$

BASH_LOADABLES_PATH=/usr/lib/bash/
enable -f sleep sleep

[[ -r ~/.bashrc ]] && . ~/.bashrc

if [ "$BASH" ]; then
  if [ -f ~/.bashrc ]; then
    . ~/.bashrc
  fi
fi

/bin/bash - The bash executable
/etc/profile - The systemwide initialization file, executed for login shells
/etc/bash.bashrc - The systemwide per-interactive-shell startup file
/etc/bash.bash.logout - The systemwide login shell cleanup file, executed when a login shell exits
~/.bash_profile - The personal initialization file, executed for login shells
~/.bashrc - The individual per-interactive-shell startup file
~/.bash_logout - The individual login shell cleanup file, executed when a login shell exits
~/.inputrc - Individual readline initialization file

# switch to another cluster that's in kubeconfig
$ kubectx minikube
Switched to context «minikube».

# switch back to previous cluster
$ kubectx -
Switched to context «oregon».

# rename context
$ kubectx dublin=gke_ahmetb_europe-west1-b_dublin
Context «gke_ahmetb_europe-west1-b_dublin» renamed to «dublin».

# change the active namespace on kubectl
$ kubens kube-system
Context «test» set.
Active namespace is «kube-system».

# go back to the previous namespace
$ kubens -
Context «test» set.
Active namespace is «default».

kubectl krew install ctx
kubectl krew install ns

brew install kubectx

CONFIG_ZSWAP_DEFAULT_ON=N

GRUB_CMDLINE_LINUX_DEFAULT="zswap.enabled=0" loglevel=3 quiet "

grub-mkconfig -o /boot/grub/grub.cfg

cat /sys/module/zswap/parameters/enabled

#!/bin/bash

modprobe zram
mkdir /sys/block/zram0
echo lz4 > /sys/block/zram0/comp_algorithm
echo 1G > /sys/block/zram0/disksize
echo 2 > /sys/block/zram0/max_comp_streams
mkswap --label zram0 /dev/zram0
swapon --priority 100 /dev/zram0

apt install systemd-zram-generator

[zram0]
zram-size = ram
compression-algorithm = lz4

systemctl daemon-reload
systemctl start /dev/zram0

sudo service apache2 start

sudo systemctl start apache2

ps -p 1 -o comm=

echo $?

nginx -t

nginx -s reload

# findmnt -x 
Success, no errors or warnings detected

# findmnt -x 
/mnt/backup 
[E] unreachable on boot required source: UUID=151ea24d-977a-412c-818f-0d374baa5012

# findfs "UUID=151ea24d-977a-412c-818f-0d374baa5013" 
/dev/sda2

# echo $? 
0

# findfs "UUID=151ea24d-977a-412c-818f-0d374baa5012" 
findfs: unable to resolve 'UUID=151ea24d-977a-412c-818f-0d374baa5012' 
# echo $?

if findfs "UUID=$1" >/dev/null; then 
echo "$1 connected." 
else 
echo "$1 not connected." 
fi

# ./check-fs.sh 151ea24d-977a-412c-818f-0d374baa5013 
151ea24d-977a-412c-818f-0d374baa5013 connected.

if findmnt -rno TARGET "$1" >/dev/null; then 
echo "$1 mounted." 
else 
echo "$1 not mounted." 
fi

# ./check-mnt.sh /mnt/extbackup 
/mnt/extbackup not mounted.

cp -v <исходные_файлы_или_каталог> <целевой_каталог>

rm -rf -v <каталог>

iconv -f UTF-8 -t ASCII input.txt > output.txt

iconv -f ISO-8859-1 -t UTF-8 input.txt > output.txt

iconv -f WINDOWS-1251 -t UTF-8 < input.txt > output.txt

find /path/to/directory -type f -name '*.txt' -exec iconv -f UTF-8 -t ISO-8859-1 {} -o {} \;

ls -1 --hyperlink=always

$ command &

$ command > output.txt &

$ command > /dev/null &

$ nohup command &

sudo apt-get install gnupg

gpg -c имя_файла

gpg имя_файла.gpg

echo "Ваше сообщение" | gpg -e -r имя_получателя > зашифрованное_сообщение.gpg

fuser -va 23/tcp

fuser -va /путь/к/файлу

fuser -va /chroot/etc/resolv.conf

$ export HISTTIMEFORMAT="%F %T "

$ history | tail -n 5

$ history 5

sudo apt-get install mailutils

echo "Текст вашего письма" | mail -s "Тема письма" адрес_получателя@example.com

mutt -s "Тема письма" -a /путь/к/вашему_файлу.txt адрес_получателя@example.com < /путь/к/текстовому_файлу.txt

ssh [email protected] --

ssh [email protected] -- command1 --arg1 --arg2

cat --file
cat -f

cat -- --file
cat -- -f

rm --file       = получим ошибку
rm -- '--file'  = а вот это сработает

rm -v -i -- '--file'
rm -f -v -i -- '-f'

/usr/bin/echo -- -n
echo -- --test

-- -n
-- --test

script history_log.txt

Script done, file is history_log.txt