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name: jc description: Convert the output of common CLI tools into JSON for easier processing and analysis. Use when parsing command-line tool output, processing data with JSON tools like jq, or analyzing system information programmatically.

JC Skill

This skill provides commands for using jc to convert traditional command-line output into JSON.

Basic Usage

Copy# Pipe output of a command to jc
ls -l | jc --ls | jq '.[0].filename'

# Use the -p flag for pretty-print
uptime | jc --uptime -p

Supported Commands

jc supports over 100 commands. Here are some common ones:

• ls: ls -l | jc --ls
• ps: ps aux | jc --ps
• df: df -h | jc --df
• ifconfig: ifconfig | jc --ifconfig
• netstat: netstat -rn | jc --netstat
• dig: dig google.com | jc --dig
• ping: ping -c 3 google.com | jc --ping
• uptime: uptime | jc --uptime
• crontab: crontab -l | jc --crontab

Magic Mode

The --magic (or -m) flag attempts to automatically detect the command:

Copyjc -m ls -l
jc -m ping -c 3 google.com

Useful Patterns

Combining with JQ

Copy# Get the IP address of the first interface
ifconfig | jc --ifconfig | jq '.[0].ipv4_addr'

# List files larger than 1MB
ls -lh | jc --ls | jq '.[] | select(.size > 1000000) | .filename'

Formatting Output

Copy# YAML output
ls -l | jc --ls --yaml

Cheat Sheet

Common Parsers

• --ls
• --ps
• --df
• --dig
• --ping
• --ifconfig
• --env
• --ini
• --xml
• --csv

Global Options

• -p, --pretty: Pretty-print JSON.
• -m, --magic: Auto-detect command.
• -q, --quiet: Suppress warning messages.
• -r, --raw: Do not process values (no type conversion).
• --yaml: Output YAML instead of JSON.

Related Skills

• nu-shell: Process jc's JSON output using nu-shell's structured data handling and pipelines.