How to setup wifi (5G) by cli on Raspberry Pi
Raspberry Pi OS provides raspi-config for configuring Wi-Fi from the command line, including country settings needed for some 5 GHz connections.
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Network.
19 articles on this topic
How to change a network interface name on CentOS/RHEL 7
Linux network interfaces are commonly named eth0, eth1, ... ethx. These names do not describe the interface hardware, so they do not tell us what kind of hardware eth0 or eth1 is…
How to read pcap file in Linux CLI using tcpdump
pcap files from tcpdump or network devices are binary and cannot be read in ordinary text editors. tcpdump can read them directly from the Linux console.
How to disable IPv6 on CentOS
There are several ways to disable IPv6. The recommended method is to edit /etc/sysctl.conf rather than disable the IPv6 module, which causes problems with SELinux and other components…
How to fix "wget: unable to resolve host address" issue
If wget reports unable to resolve host address, first test network connectivity, then check whether wget is trying IPv6 on a machine without IPv6 access.
Displaying network traffic using tshark
TShark is a network protocol analyzer, the text-mode version of Wireshark, that captures live network packets and helps analyze traffic.
How to install dig, host and nslookup commands on your system
If dig, host, or nslookup is missing on your Linux machine, you may have used a minimal installation on CentOS 6 or RHEL 6, or selected no packages during installation.
How to build RPM package for the Coova-chilli with CentOS 5
Coova chilli is hotspot software that I believe branched from Chilli hotspot, which appears to have stopped development. RPM files for RedHat Enterprise or CentOS can be hard to find.
Network Card Bonding On Red Hat Linux and CentOS
Channel bonding combines network interface cards to increase bandwidth, provide failover or load balancing, or use 802.3ad port trunking. It also supports VLANs, or 802.1q.
How to use wpa_cli command
wpa_cli is included in the wpa_supplicant package. It checks status and changes configuration, including trigger events and passphrases for wireless connections.
Set up your Linux for Wake On LAN (WOL)
Wake on LAN starts a server through a network command from another machine. Configure both the server receiving the wake command and the client sending it.
Configure VLAN devices over a bond interface
Linux supports VLAN networking through the 8021q driver. This example combines channel bonding and VLAN configuration.
Test the connectivity to server using netcat
Use netcat to test a connection by opening a socket on the server and connecting from a client on the network.
Use IPv6 address be specified with scp, sftp and ssh
Use scp, sftp, and ssh with IPv6 addresses by enclosing the address in square brackets, as demonstrated with fe80::219:99ff:fe20:c251.
Other Virtual network interfaces go down when bring down virtual network interfaces
With multiple virtual network interfaces, bringing one interface down may also bring down others. This example uses eth0:0, eth0:1, eth0:2, and eth0:3.
View extended information about network connections using netstat?
Use netstat to view network details with the command below. [root@example ~]# netstat -tuanpeeoT Active Internet connections (servers and established) Proto Recv-Q Send-Q Local…
Use SNMP and MRTG to monitor CPU, MEM and Disk use status
The previous article on installing MRTG with IOSTAT adapted monitoring-tool commands for use with MRTG. This differs from the usual approach of using SNMP to send status information…
Setup MRTG to monitor CPU workload , Memory and Disk use status with IOSTAT.
This MRTG setup adapts monitoring tools to display hardware status. Scripts are needed for each hardware metric; this article uses IOSTAT tools.
Change my hostname or the machine name in Red Hat Linux.
There are several ways to change a Red Hat or Red Hat clone hostname, including hostname without restarting the network service.