Get UUID of Hard Disks on Debian

1st option
# ls -l /dev/disk/by-uuid/

lrwxrwxrwx 1 root root 15 Nov 7 13:00 9c18302c-9aa2-4f55-b2c8-03a9ae68b2a2 -> ../../nvme1n1p1
lrwxrwxrwx 1 root root 15 Nov 7 13:00 b524f8c0-90e7-4fc7-a842-6cb2380086c8 -> ../../nvme0n1p1

2nd option

# blkid /dev/nvme1n1p1

/dev/nvme1n1p1: UUID="9c18302c-9aa2-4f55-b2c8-03a9ae68b2a2" TYPE="ext4" PARTUUID="1e534c5e-e4c8-424c-822b-117e47d72263"

Adding routes to Debian

This adds the route immediately to the Kernel IP routing table (after reboot it will be erased).

# route add -net 172.31.0.0 netmask 255.255.0.0 gw 192.168.1.1

to print the Kernel IP Routing table:

# netstat -rn

To keep the Static Route persistent you need to edit the file: /etc/network/interfaces

and the static routes in the following format:

up route add [-net/-host] <host/net>/<mask> gw <host/ip> dev <interface>

up route add -net 172.31.0.0/16 gw 192.168.1.1 dev eno1

 

Setting the exact time Debian 6

# apt-get install ntpdate
# dpkg-reconfigure tzdata

Synchronise with time server:
# ntpdate pool.ntp.org

If all done good, then you will see the correct current time corresponding to your time zone in the screen.

To live with out manual correction of the time, the last command can be put in the /etc/crontab to update rate, for example once a week.

42 4    * * 0   root    /usr/sbin/ntpdate pool.ntp.org

Will run every Sunday at 4:42 am