Output Pretty Json Via Pipe

Display network interface configurations in a human-readable format.

Terminal

<ifconfig> | jc <--ifconfig> -p

<ifconfig> | jc <--ifconfig> -p

#!/bin/bash

# Output Pretty Json Via Pipe
{{ifconfig}} | jc {{--ifconfig}} {{[-p|--pretty]}}

When To Use

During a network troubleshooting session to verify interface settings.

Pro Tip

Use the '-a' flag to include all interfaces, including inactive ones, for a full network overview.

Command Builder

Tune the command before you copy it

Generated Command

<ifconfig> | jc <--ifconfig> -p

Anatomy of Output

eth0 Link encap:Ethernet HWaddr 08:00:27:3e:6d:58 Interface Name and Type

Shows the interface name and type (eth0 is Ethernet).

inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0 IPv4 Address Information

Displays the assigned IPv4 address, broadcast address, and subnet mask.

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interface Status

Indicates if the interface is UP, operational, and statistics related to packet handling.

Power User Variants

ifconfig -a | jc --ifconfig

Output detailed info of all interfaces in JSON format.

Troubleshooting

ifconfig: command not found

Solution: Install net-tools package: sudo apt-get install net-tools

Cannot open /proc/net/dev: No such file or directory

Solution: Check if the system is using a compatible kernel.

eth0: error fetching interface information: Device not found

Solution: Verify the interface name with 'ip link show'.

Command Breakdown

<ifconfig>: Base Command; The executable that performs this operation. Here it runs Ifconfig before the shell applies any redirect operators.
<ifconfig>: ifconfig; The value supplied for ifconfig.
<--ifconfig>: ifconfig; The value supplied for ifconfig.
-p: p| pretty; The value supplied for p| pretty.
-p: Command Option; Tool-specific option used by this command invocation.

Alternative Approaches

Alternative system operations tools for the same job.