K8sCat k8scat

初学者在Linux命令窗口（终端）敲命令时，肯定觉得通过输入一串一串的字符的方式来控制计算是效率很低。但是Linux命令解释器（Shell）是有很多快捷键的，熟练掌握可以极大的提高操作效率。下面列出最常用的快捷键，这还不是完全版。

	docker volume create mysql80-data
	docker run \
	-e MYSQL_ROOT_PASSWORD=$MYSQL_ROOT_PASSWORD \
	-d --name mysql8 \
	-v mysql8-data:/var/lib/mysql \
	-p 33060:3306 mysql:8.0

	docker volume create mysql56-data
	docker run \
	-e MYSQL_ROOT_PASSWORD=$MYSQL_ROOT_PASSWORD \
	--privileged=true \
	-d --name mysql56 \
	-v mysql56-data:/var/lib/mysql \
	-p 33061:3306 \
	--ulimit nofile=65536:65536 \
	mysql:5.6

	#!/bin/bash
	set -e

	install -m 0755 -d /etc/apt/keyrings
	curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg \| gpg --dearmor > /etc/apt/keyrings/docker.gpg
	chmod a+r /etc/apt/keyrings/docker.gpg
	echo \
	"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://mirrors.aliyun.com/docker-ce/linux/ubuntu \
	"$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" \| \
	tee /etc/apt/sources.list.d/docker.list > /dev/null

	# read in zsh is different from bash
	# https://superuser.com/questions/555874/zsh-read-command-fails-within-bash-function-read1-p-no-coprocess
	# in bash, read -p "prompt" var
	# but in zsh, read "var?prompt"
	function port_forwarding_local() {
	echo "port forwarding to remote server"

	read "local_host?local_host (default is empty): "
	read "local_port?local_port: "
	if [[ -z "${local_port}" ]]; then

-volume=""
-err=$(docker volume rm $volume 2>&1)
-echo "err: $err"
-container_ids=$(echo $err | awk -F'[' '{print $2}' | awk -F']' '{print $1}')
-echo "ids: $ids"
-IFS=', '
-for container_id in $container_ids; do
-	echo "delete container: $container_id"

	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.

	$ ssh -vvv xxx-dev
	OpenSSH_9.0p1, LibreSSL 3.3.6
	debug1: Reading configuration data /Users/k8scat/.ssh/config
	debug1: /Users/k8scat/.ssh/config line 4: Applying options for *
	debug1: /Users/k8scat/.ssh/config line 76: Applying options for xxx-dev
	debug1: Reading configuration data /etc/ssh/ssh_config
	debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files
	debug1: /etc/ssh/ssh_config line 54: Applying options for *
	debug2: resolve_canonicalize: hostname 113.13.120.21 is address
	debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/Users/k8scat/.ssh/known_hosts'

	# What to do when mysqldump fails
	function report_mysqldump_fail() {
	cat $scratch/${filename}_raw.err >> $log
	mailx -s "mysqldump failed for DB $db_name on $HOSTNAME!!!" [email protected] < $log
	exit 2
	}

	# How to report a step along the process
	function status_report() {
	message=$1