Dziesiate_21
0 21 informačný list michalesq
otázka  |
Odpoveď |
|||
|---|---|---|---|---|
|
Copy ACL between files
|
getfacl file1 | setfacl --set-file=- file2
|
|||
|
ACL - setting mask for the file to read only
|
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
|
setfacl -d -m u: starbuck: rwX dir1
|
|||
|
Using setfacl, change the "other" permissions to none on file1.
|
setfacl -m o:- file1
|
|||
|
Remove the default permissions from dir1.
|
setfacl --remove-default dir1
|
|||
|
Displays all IPs on the machine
|
ip addr
|
|||
|
Displays IP of the particular device
|
ip addr show eth0
|
|||
|
Command which shows all hops to get the IP
|
treceroute IP
|
|||
|
Command to show all listening ports and established connections
|
ss
|
|||
|
Command to show all listening and established connection
|
ss -a
|
|||
|
Display all devices in the system
|
ls /sys/class/net
|
|||
|
Location of network-scripts
|
cd /etc/sysconfig/network-scripts/
|
|||
|
Command to add new network connection and create script in /etc/sysconfig/network-scripts/
|
nmcli con add con-name "my connection" autoconnect yes type ethernet ifname eth1
|
|||
|
Command to show network connections
|
nmcli dev show
|
|||
|
Command to add network connection with static IP and GW and create script in /etc/sysconfig/network-scripts/
|
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
|
/etc/nsswitch.conf
|
|||
|
How to set hostname - not persistent?
|
hostnamectl set-hostname <hostname>
|
|||
|
How to set hostname - persistent?
|
/etc/hostname
|
|||
|
How to add DNS server with nmcli (this will modify /etc/sysconfig/network-scripts/ifcfg-eths0 and resolv. conf)?
|
nmcli con mod "System eth0" ipv4. dns 8.8.8.8
|
|||
|
How to display Google IP and domain name?
|
getent hosts google.com
|
|||
|
How to up and interface with nmcli?
|
nmcli con up eths0
|
|||
