groupmems

What is groupmems? 

What is ? in vi(m) editor?

 You know this symbol (?). How it works in editor vi and command less?

editor vi 16: undo?

Niečo vymažeme a zistíme, že vlastne nie to sme chceli. Napríklad IP adresu, však tie sa nikto neučí naspamäť.

Linux IP forwarding – How to Disable/Enable using net.ipv4.ip_forward

RHCSA question: 

 Linux IP forwarding – How to Disable/Enable using net.ipv4.ip_forward

rhcsa question: The system time should be set to your (or nearest to you) timezone and ensure NTP sync is configured

 rhcsa question: The system time should be set to your (or nearest to you) timezone and ensure NTP sync is configured 

rhcsa - 15 task - script (users)

basic script for question 15 (C, D)

rhcsa 11-13

my next study

RHEL8 -graphical installation

 My first installation of RHEL 8.5

rhcsa - 7-10 - tasks

rhcsa - 7-10 - tasks

rhcsa notes: 1-6

 rhcsa notes: 

How to disable selinux in GRUB?

Many administrators hate selinux. We can disable in GRUB in boot process.

modinfo

 Some parameters in modinfo commands:

command date

 I would like to show you command date. Let's play with date:

How to install nfs server

We need network storage via nfs protocol. How to install nfs and configure?

List of account in Linux

 Some customers need list of account on linux without user=services. 

UUID, xfs admin, backup data and extend disk via lvm

Migrate disk to lvm and extend disk

UUID, xfs_admin a LVM

Ako sa vygeneruje nové UUID? Mám disk, potrebujem ho dať do lvm a viem to spraviť bez UUID? 

zmena root hesla v grube

 Obrázkový postup, neskôr to spíšem:

užívatelia a skupiny, úloha

 Máme 3 užívateľov, natashu, toma a harryho. Vytvorme ich a Harryho a Natashu dajme do skupiny admin a tom nebude mať shell. Ako postupovať?

Príkaz mv

 Príkaz mv slúži na prepisovanie alebo presúvanie súborov, resp. adresárov. Trochu sa naň pozrieme aj s dvoma prepínačmi.