TyeolRik

function camelcase_to_snakecase() {
    local ret
    ret=$(echo "$1" | sed -r 's/([A-Z])/_\L\1/g' | sed 's/^_//')
    echo "$ret"
}

SomeString="helloWorldMyFriend"
snake_case=$(camelcase_to_snakecase "${SomeString}")
echo $snake_case

TyeolRik

#!/bin/bash

function all_uppercase() {
    local ret=${1^^}  # Make input parameter Upper case. Should be declared in local variable.
    echo "$ret" # This is like return.
}

SomeString="HelloWorld"
UpperCase=$(all_uppercase "${SomeString}")
echo $UpperCase

TyeolRik

CREATE TYPE SUBUSER AS OBJECT (
    ID VARCHAR2(200),
    PERMISSIONS VARCHAR2(12)
);

CREATE TYPE SUBUSERS AS VARRAY(1000) OF SUBUSER; -- Nested Table type.

CREATE TABLE USER (
    UID VARCHAR2(50),
    SUBUSERS_COLUMN SUBUSERS -- An Instance of Nested Table

TyeolRik

#!/bin/bash
###########################
# Information
# Host 1 (node1): 172.22.4.101 - admin
# host 2 (node2): 172.22.4.102
# host 3 (node3): 172.22.4.103
# host 4 (node4): 172.22.4.104
# host 5 (node5): 172.22.4.105
###########################

TyeolRik

#!/bin/bash
###########################
# Information
# Host 1 (node1): 172.22.4.101 - admin
# host 2 (node2): 172.22.4.102
# host 3 (node3): 172.22.4.103
# host 4 (node4): 172.22.4.104
# host 5 (node5): 172.22.4.105
###########################

TyeolRik

#!/bin/bash
################# README #################
# Please run this scripts on admin node! #
# Please set whether all SSH keys are removed from all HOSTs
ssh_remove=false
##########################################

# https://www.flamingbytes.com/posts/uninstall-ceph/
#################################################
# Variable targetDisk should be configured.     #

TyeolRik

#!/bin/bash

# Host: CentOS 8 (192.168.8.119)
# Client: Windows 10 Powershell (192.168.8.120)
# ssh -Y [email protected]

# Before Begin in Client(Windows)
# 1. Install VcXsrv (https://sourceforge.net/projects/vcxsrv/)
# 2. Execute Xlaunch.exe
#    Check {Multiple Windows and Display number = -1, Start no client, {Clipboard, Primary Selection, Native opengl, Additional parameter: "-ac"} -> Save Configuration}

TyeolRik

#!/bin/bash
dnf update -y &&\
dnf install -y kernel-devel kernel-header* make gcc elfutils-libelf-devel

echo "Installing Docker"
yum install -y yum-utils telnet &&\
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo &&\
yum install -y --allowerasing docker-ce docker-ce-cli containerd.io docker-compose-plugin &&\
systemctl enable docker.service &&\
systemctl start docker.service

TyeolRik

#!/bin/bash
NC='\033[0m' # No Color
YELLOW='\033[1;33m'

cephfs_ip="10.0.2.15" # ceph mon dump
clusterID="e952c52a-f18f-11ec-bb41-08002716126b" # ceph mon dump
cephfs_user_key="AQAfDrJibQtyARAAp3DxKWUP2LBCPbJUe9BUDg==" # ceph auth get-or-create client.cephfs mon 'allow r' osd 'allow rwx pool=kubernetes'
cephfs_admin_key="AQDzDbJiuBawARAA2NBP5/wgoaadOYGWIrUFFA==" # ceph auth get client.admin

sudo dnf update -y &&\

TyeolRik

#!/bin/bash
NC='\033[0m' # No Color
YELLOW='\033[1;33m'

sudo dnf update -y &&\
sudo dnf install -y kernel-devel kernel-header* make gcc elfutils-libelf-devel

printf "${YELLOW}Installing Docker${NC}\n"
sudo yum install -y yum-utils telnet &&\
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo &&\