##### tags `nasa`
# Partitions:
> - **partitions:**
> <font color="blue"> $fdisk -l PARTITOIN </font> to see partition information
> <font color="blue"> $lsblk </font> to list block devices
> <font color="blue"> $fdisk PARTITION </font> to deal with PARTITION
> - **partition table:**
> MBR: Master Boot Record, 3 primary + 1 extended or 4 primary
> GPT: GUID Partiton Table, arbitrary
> - **LVM:**
> 1. PV:
> <font color="blue"> $pvcreate PARTITION </font>
> 2. VG:
> <font color="blue"> $vgcreate {vg-name} {pv1} {pv2} ...</font>
> <font color="blue"> $vgextend {vg-name} {pv}</font>
> 3. LV:
> <font color="blue"> $lvcreate -L {size (ex. 10GiB)} -n {lv-name} {vg-name} </font>
> <font color="blue"> $lvresize -L +/-{size} {lv-path} </font>
> - **FSType & Mount:**
> <font color="blue"> $mkfs -t {fstype} {partiton path} </font> (ex. $mkfs -t ext4 /path/to/partition)
> <font color="blue"> $mount {device} {mount point} </font> (ex. mount /path/to/lvm /home)
> - **fstab:**
> <font color="blue"> $vim /etc/fstab </font> (UUID dir type errors=remount-ro,auto,exec,rw,user 0 0)
# Cisco Packet Tracer:
> [lab slides](https://slides.com/shu-po/deck#/nasa2020-lab5)
> - user mode:
> **$enable**
> - Privileged mode:
> **$config t**
> - finish:
> **$end / $write memory**
> - show:
> **1. $show running-config** (running configuration)
> **2. $show interfaces** (detal of all interfacfes)
> **3. $show vlan** (vlans in vlan database)
> - set hostname:
> **$hostname {name}**
> - enable password(secret):
> **$enable password {PASSWORD}**
> - show password(secret):
> **$do show running-config | include enable**
> - password encryption:
> **$service password-encryption**
> - choose interface:
> **ex. $interface Fa0/1**
> - access vlan:
> **1. $swichport mode access**
> **2. $switchport access vlan {vlan-number}**
> - trunk port:
> **1. $switchport mode trunk**
> **2. $switchport trunk allowed vlan {v1},{v2}**
> - set vlan name:
> **1. $Vlan {number}**
> **2. $Name {VLAN_NAME}**
> - allow telnet:
> **1. $interface {vlan-name or vlan {number}}**
> **2. $ip address {target ip} 255.255.255.0**
> - link aggregation:
> **1. $interface range Fa0/1-2** (for example)
> **2. $ ...same settings...**
> **3. $channel-group {NUM} mode active**
> - choose line:
> **1. $line vty 0 4** (for example)
> **2. $login** (enable login)
> **3. $username {USERNAME} password {PASSWORD}** (if no specific user, then no username...)
> - Disable domain name lookup:
> **$no ip domain-lookup**