k8scat

# 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

k8scat

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"

k8scat

Linux 命令行编辑快捷键

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。

• 命令行快捷键：
  • 常用：
    • Ctrl L ：清屏
• Ctrl M ：等效于回车

k8scat

{
    "fields": [
        "uuid",
        "owner_uuid",
        "team_uuid",
        "project_uuid",
        "reference_id",
        "reference_type",
        "type",
        "ext_id",

k8scat

# 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.

k8scat

$ 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'

k8scat

 # 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

k8scat

#!/bin/bash
# server1 and server2 are defined in ~/.ssh/config

users=$(ssh server1 "ls /home")
for user in ${users}; do
  user_home_found=$(ssh server2 "ls /home" | grep "${user}")
  if [[ -n "${user_home_found}" ]]; then
    echo "user home already created: ${user}"
    continue
  fi

k8scat

// ==UserScript==
// @name         Copy Link for GitHub Issues and PRs
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  Add a "Copy link" button to Github issue and pull requests
// @author       ye11ow, K8sCat <[email protected]>
// @match        https://github.com/*
// @include      https://github.com/*/issues/*
// @include      https://github.com/*/pull/*
// @icon         https://www.google.com/s2/favicons?domain=github.com

k8scat

urlencode() {
    # urlencode <string>

    old_lc_collate=$LC_COLLATE
    LC_COLLATE=C

    local length="${#1}"
    for (( i = 0; i < length; i++ )); do
        local c="${1:$i:1}"
        case $c in