Linux-System-Management-Scripts-Tricks

Linux System Administrator & Engineer Certification Tricks Management Scripts

Linux Security & Linux Hardening & Linux Management & Linux Configuration

Information

• [x] cpu info
• [x] kernel info
• [x] ram info
• [x] disk info
• [x] gpu info
• [x] network info

User Management

• [x] sudo rights
• [x] sudo rights without password
• [x] user add with skeleton directory
• [x] user add without home directory, no group, no shell
• [x] user disk quota
• [x] force user to change password
• [x] lock user after failed login attempts
• [x] join ldap as a client
• [x] alias creator (mkalias)

Network Configuration

• [x] ifconfig mtu change layer2
• [x] ip link mtu change layer2
• [x] ip route add
• [x] rename network interface
• [x] ip addr static ip
• [x] ifconfig static ip
• [x] dns nameservers
• [x] netplan static ip
• [x] join wifi network
• [x] ip link change mac address
• [x] ifconfig change mac address
• [x] static routing netplan
• [x] give bind permission

Remote Access

• [x] ssh key-based authentication
• [x] ssh two factor authentication
• [x] ssh alias
• [x] vnc server
• [x] vnc client
• [x] parallel-ssh
• [x] parallel-ssh options

HTTP Servers

• [x] apache vhost
• [x] apache basic authentication
• [x] apache restrict extensions
• [x] apache reverse proxy
• [x] nginx reverse proxy
• [x] nginx reverse proxy body
• [x] htaccess

Proxy Servers

• [x] squid installation
• [x] squid cache proxy
• [x] squid acl access restrictions
• [x] squid spoofing headers
• [x] squid removing headers
• [x] squid acl block-list
• [x] squid ssl config
• [x] squid service

File Operations

• [x] user vsftpd configuration
• [x] anonymous vsftpd configuration
• [x] samba anonymous file sharing
• [x] rsync over ssh
• [x] nfs file sharing

Disk I/O

• [x] raid info
• [x] raid setup
• [x] swap space
• [x] raid hot spares
• [x] encrypt swap space
• [x] add logical volume
• [x] add physical volume
• [x] add volume group
• [x] extend logical volume
• [x] extend volume group
• [x] change physical volume
• [x] delete a partition
• [x] shrink a partition

DNS Servers

• [x] authoritative dns service
• [x] forwarding dns service
• [x] dns service version hiding
• [x] disable dns recursion
• [x] restrict zone transfer

DHCP Servers

• [x] dhcp server configuration
• [x] dhcp server change interface
• [x] dhcp static host-ip
• [x] disable dynamic dns
• [x] deny dhcpdecline messages

Firewall Service

• [x] iptables basics
• [x] iptables rules for a single user
• [x] iptables persistent save
• [x] iptables port forwarding
• [x] nftables basics
• [x] iptables as a service

Hardening

• [x] apache trace-track
• [x] apache server signature
• [x] randomized layout of virtual address space
• [x] openscap
• [x] sftp deny deletion
• [x] squid remove headers
• [x] rsyslog

Installation

• [x] pihole setup
• [x] pihole second dns
• [x] wordpress installation
• [x] limesurvey installation
• [x] owncloud installation
• [x] nextcloud installation
• [x] gophish installation
• [x] revive adserver installation

Others

• [x] bash ignore duplicate entries
• [x] kill zombie processes
• [x] redis server performance
• [x] hide the grub menu
• [x] rsyslog server configuration
• [x] rsyslog client configuration
• [x] mysql access denied error
• [x] mongodb backup and restore
• [x] fail2ban
• [x] bash terminal timestamp
• [x] user limits
• [x] disable usb ports
• [x] install selfsign certificate