Cheat Sheets

Linux Scripts

• Install system tools
• Server inventory
• 1C 8.3 Server user`s sessions terminate
• Bash: /dev/urandom
• Bash: Strong-Wi-Fi
• Bash: VCF&WiFi QR-Gen
• MobaXterm macros:
  • Debian: General Information
  • Debian: Network Assessment
  • Debian: Storage and SAN Assessment
  • Debian: Services and Systemd
  • Debian: Logs and Journal
  • Debian: Performance Assessment
  • Debian: Security Assessment
  • Debian: Virtualization Assessment
  • Debian: Backup and Recovery
  • Debian: Health Check
  • Debian: Data Bases

Linux Mini Instructions

• Useful Linux commands
• MDADM+Script
• Create a service
• Connecting to Windows via SSH as in Linux
• How to send a message to Telegram a user and a group
• Linux Log Files Overview
• Samba Server
• Ubuntu Server on Raspberry Pi
• Ubuntu Server 22.04 LTS with remote LUKS Unlock
• Creating a LUKS-encrypted disk with auto-mounting (key file)
• LUKS Cheat Sheet
• GRUB (BIOS/UEFI)
• IPTABLES_vs_NFTABLES
• Smartmontools
• Chrony | Manual Time & Date Configuration (NTP Offline)
• Netplan templates

Others

• How to install a Telegram bot on Ubuntu Server 20.04
• How to create a telegram bot
• How to find out chat ID in Telegram

Windows troubleshooting

• .NET Framework errors

Windows scripts

• Windows cleaning script (PS)

Networking

• Cisco: Base configuration
• Cisco: STP Toolkit
• Cisco: DTP & VTP
• Cisco: EtherChannel
• Cisco: Routing
• Cisco: FHRP
• Cisco: ACLs
• Cisco: DNS
• Cisco: DHCP
• Cisco: NAT
• Cisco: Aliases and Groups
• VTI / GRE / IPSec / VPN over IPSec
• Cisco: Firmware_&_Rollback_Password_reset
• Cisco: DHCP_Snooping_&_DAI
• Cisco: Port_Security
• Cisco: Voice_VLAN_&_PoE
• Cisco: Wireless (Wi-Fi)
• Cisco: IPv6_Tranformation
• Cisco: IPv6_Addresses
• Cisco: IPv6_Routing
• Cisco: QoS/DSCP
• Cisco: General CCNA