# Useful Linux command for daily operation

## System

### Check uptime

`uptime -p` total uptime

`uptime -s` system up since

## Local Disk

### Un-mount busy disk
`umount <path> -l`

### Mount all disk in `/etc/fstab`
`mount -a`

### Create new ext4 disk partition

`sudo fdisk /dev/sda`

Press `n` for new partition
Follow default

Press `p` to confirm

Press `w` to write change

Press `q` to quit

`sudo mkfs.ext4 /dev/sda1`

## LVM

## Proxmox LVM

### Mount Guest Disk

apt-get install kpartx
kpartx -a /dev/pve/vm-103-disk-1
ls /dev/mapper/
# Mount the disk and do something
# Undo
umount /mnt
kpartx -d /dev/pve/vm-103-disk-1

## Networking

### Disable/Enable Network Interface

`ip link set <interface> up`
`ip link set <interface> down`

### Set IP for an Interface

`ifconfig <interface> 192.168.1.0/24`

## Docker

### Recreate/rebuild container

`docker-compose up --force-recreate --build -d`