→ Dziesiate_21 → Start Learning

Question		Answer
Copy ACL between files start learning		getfacl file1 \| setfacl --set-file=- file2
ACL - setting mask for the file to read only start learning		setfacl -m m: r file1
Set the default permissions on dir1 to read, write and execute for the starbuck user; execute only if it is a directory start learning		setfacl -d -m u: starbuck: rwX dir1
Using setfacl, change the "other" permissions to none on file1. start learning		setfacl -m o:- file1
Remove the default permissions from dir1. start learning		setfacl --remove-default dir1
Displays all IPs on the machine start learning		ip addr
Displays IP of the particular device start learning		ip addr show eth0
Command which shows all hops to get the IP start learning		treceroute IP
Command to show all listening ports and established connections start learning		ss
Command to show all listening and established connection start learning		ss -a
Display all devices in the system start learning		ls /sys/class/net
Location of network-scripts start learning		cd /etc/sysconfig/network-scripts/
Command to add new network connection and create script in /etc/sysconfig/network-scripts/ start learning		nmcli con add con-name "my connection" autoconnect yes type ethernet ifname eth1
Command to show network connections start learning		nmcli dev show
Command to add network connection with static IP and GW and create script in /etc/sysconfig/network-scripts/ start learning		nmcli con add con-name "my connection" autoconnect yes type ethernet ifname eth1 ip4 10.0.0.0 gw4 10.0.0.1
File where we can modify if Kernel should look to resolv. conf or /etc/hosts for finding IPs and names start learning		/etc/nsswitch.conf
How to set hostname - not persistent? start learning		hostnamectl set-hostname <hostname>
How to set hostname - persistent? start learning		/etc/hostname
How to add DNS server with nmcli (this will modify /etc/sysconfig/network-scripts/ifcfg-eths0 and resolv. conf)? start learning		nmcli con mod "System eth0" ipv4. dns 8.8.8.8
How to display Google IP and domain name? start learning		getent hosts google.com
How to up and interface with nmcli? start learning		nmcli con up eths0

Dziesiate_21

You must sign in to write a comment

More