my notes - linux

admin

Anonymous (anonymous@undisclosed.example.com) — 2022-10-29T16:15:47+00:00

Linux Admin Fix Old CentOS Repos Maintainece update not supported from 2020/11/30 => you must config repos to new mirror for Fixing yum error: yum list Failed to set locale, defaulting to C Loaded plugins: fastestmirror Determining fastest mirrors YumRepo Error: All mirror URLs are not using ftp, http[s] or file. Eg. Invalid release/repo/arch combination/ removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/base/mirrorlist.txt

bashshell

Anonymous (anonymous@undisclosed.example.com) — 2022-10-29T16:15:47+00:00

refer: Advanced Bash-Scripting Guide: Bash script: Linux Bash Shell Script Simple code * create helloworld.sh cat > helloworld.sh #!/bin/bash strhello="Hello World" #print variable on a screen echo $strhello * chmod to excute and run: chmod +x helloworld.sh ./helloworld.sh

digitalocean

Anonymous (anonymous@undisclosed.example.com) — 2022-10-29T16:15:47+00:00

Moving web from hostgator to DigitalOcean 1. Install missing components on DigitalOcean install basic packages yum install vim mc man telnet create swap file for your linux server Most cloud virtual machine providers do not set up swapfiles as part of their server provisioning.

linuxdistributions

Anonymous (anonymous@undisclosed.example.com) — 2023-08-05T00:42:45+00:00

List of linux distributions Refer: Distributions are organized into sections by the major distribution they are based on, or the package management system they are based around Debian based cat /etc/debian_version Overview * Debian GNU/Linux is a distribution that emphasizes free software. It supports many hardware platforms.

mailconfigwithpostfix

Anonymous (anonymous@undisclosed.example.com) — 2022-10-29T16:15:47+00:00

refer: email architecture: email system in linux [postfix slide show] Mailserver config install and config postfix for sending and receiving mail install * install yum remove sendmail yum install cyrus-sasl.x86_64 yum install postfix * set MTA default to postfix alternatives --set …

plowshare

Anonymous (anonymous@undisclosed.example.com) — 2022-10-29T16:15:47+00:00

Plowshare plowshare is a command-line (CLI) download/upload tool for popular file sharing websites (aka file hosting provider or One-Click hoster). With plowshare, you will be able to download or upload files and manage remote folders and link deletion. It runs on Linux/BSD/Unix operating system.

services

Anonymous (anonymous@undisclosed.example.com) — 2022-10-29T16:15:47+00:00

Web service apache * start, stop http server service httpd start service httpd stop * http version httpd -v => Server version: Apache/2.2.3 Server built: Jan 21 2009 22:01:41 webmin Webmin is a web-based interface for system administration for Unix. Using any modern web browser, you can setup user accounts, Apache,

shellcommands

Anonymous (anonymous@undisclosed.example.com) — 2022-10-29T16:15:47+00:00

Shell Command refer: Advanced Bash-Scripting Guide: Bash script: Basic Commands man man -a read => output: POSIX Programmers Manual READ(P) Linux Programmers Manual READ(2) man -a stat => output: User Commands STAT(1) Linux Programmer?s Manual STAT(2)

vim-editor

Anonymous (anonymous@undisclosed.example.com) — 2022-10-29T16:15:47+00:00

Vim Editor Cursor movement commands h move the cursor one space to the left j move the cursor one space down k move the cursor one space up l move the cursor one space to the right Deleting text x delete the character at the cursor dd delete a line

web-mail-system

Anonymous (anonymous@undisclosed.example.com) — 2022-10-29T16:15:47+00:00

Web Mail System refer: * * Overview about webmail architecture Overview about features in webmail system: * User will use roundcube website to send and receive email * Roundcube backend will: * integrate with postfix for sendding email