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liukch

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  • kingsoft.com
  • Beijing, China
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@liukch
liukch / README.md
Created December 22, 2020 02:11 — forked from zhiguangwang/README.md
Remove password requirement from group sudo when using command "sudo"

Ubuntu

echo "%sudo ALL=(ALL:ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/50-group-sudo-nopasswd
@liukch
liukch / README.md
Created December 22, 2020 02:14 — forked from zhiguangwang/README.md
Show the environment variables of a running process in Linux 
sudo cat /proc/<pid>/environ | tr '\0' '\n'
@liukch
liukch / README.md
Last active February 8, 2022 06:21 — forked from zhiguangwang/README.md
SSH Tunnelling 
ssh-tunnel() { nohup ssh -o ServerAliveInterval=15 -f -N -L ${1}:${2} ${3} > /dev/null 2>&1; }

Usage

ssh-tunnel <local-port> <remote-host>:<remote-port> <bastion>
@liukch
liukch / openssl.md
Created November 17, 2021 12:54 — forked from zhiguangwang/openssl.md
Common OpenSSL Commands with Keys and Certificates

Common OpenSSL Commands with Keys and Certificates

Generate RSA private key (2048 bit)

openssl genrsa -out private.pem 2048

Generate a Certificate Signing Request (CSR)

openssl req -sha256 -new -key private.pem -out csr.pem
@liukch
liukch / README.md
Last active November 30, 2021 12:35
Linux Disk Operation

1. mkfs.ext4

mkfs.ext4 -E nodiscard -m0 /dev/nvme2n1

2. echo >> /etc/fstab

blkid
vi /etc/fstab
@liukch
liukch / README.md
Created December 23, 2021 07:07
Checkout to pull request branch 
git fetch upstream pull/${PR_ID}/head && git checkout FETCH_HEAD
@liukch
liukch / README.md
Created April 24, 2022 08:45
Install node-exporter in CentOS. 
#!/bin/bash

set -e

export NODE_EXPORTER_VERSION="1.3.1"

# Make file naming consistent with apt repository
readonly NAME=prometheus-node-exporter
readonly EXECUTABLE=/usr/local/bin/$NAME
@liukch
liukch / README.md
Created September 20, 2022 13:16
Access WSL2 and Multipass 
Get-NetIPInterface | where {$_.InterfaceAlias -eq 'vEthernet (WSL)' -or $_.InterfaceAlias -eq 'vEthernet (Default Switch)'} | Set-NetIPInterface -Forwarding Enabled
@liukch
liukch / README.md
Created January 30, 2024 02:54
Resize the data volume 
sudo fdisk -l
sudo resize2fs /dev/nvme0nxxx