jc

JSONifies the output of CLI tools and file-types for easier parsing.

Basic Usage

command | jc --parser          # Pipe output
jc command                    # Magic syntax
jc --help                     # List all parsers
jc --help --parser            # Parser docs

Examples

dig example.com | jc --dig | jq '.answer[].data'
ps aux | jc --ps
ifconfig | jc --ifconfig

Parsers

Category	Parsers
System	ps, top, free, df, du, ls, stat, uptime
Network	dig, ping, traceroute, netstat, ss, ifconfig
Files	ls, find, stat, file, mount, fstab
Packages	dpkg -l, rpm -qi, pacman, brew
Logs	syslog, clf (Common Log Format)
Dev	git log, docker ps, kubectl

Options

Flag	Description
-p	Pretty format JSON
-r	Raw output (less processed)
-u	Unbuffered output
-q	Quiet (suppress warnings)
-d	Debug mode
-y	YAML output
-M	Add metadata
-s	Slurp multi-line input

Slicing

Skip lines: START:STOP syntax

cat file.txt | jc 1:-1 --parser  # Skip first/last lines

Slurp Mode

For multi-line parsers: --slurp outputs array

cat ips.txt | jc --slurp --ip-address

Python Library

import jc

# Parse command output
data = jc.parse('dig', output_string)

# Or parse directly
data = jc.parsers.dig.parse(output_string)

Tips

• Magic syntax: jc command auto-detects parser
• Use jq for processing: jc cmd | jq '.field'
• --slurp for multiple items per file
• Streaming parsers for large outputs
• Python lib returns dict/list, not JSON

Related Skills

• nu-shell: Alternative structured data processing
• toon: Compact JSON representation