memento-teams/memento-skills/filesystem

import json
# Read
with open('data.json', 'r', encoding='utf-8') as f:
    data = json.load(f)
# Write (pretty-printed)
with open('output.json', 'w', encoding='utf-8') as f:
    json.dump(data, f, indent=2, ensure_ascii=False)

import csv
# Read
with open('data.csv', 'r', encoding='utf-8') as f:
    reader = csv.DictReader(f)
    for row in reader:
        print(row)
# Write
with open('output.csv', 'w', newline='', encoding='utf-8') as f:
    writer = csv.DictWriter(f, fieldnames=['name', 'value'])
    writer.writeheader()
    writer.writerows([{'name': 'a', 'value': 1}])

# Requires: pip install pyyaml
import yaml
# Read
with open('config.yaml', 'r') as f:
    data = yaml.safe_load(f)
# Write
with open('output.yaml', 'w') as f:
    yaml.dump(data, f, default_flow_style=False, allow_unicode=True)

# List files recursively
find . -type f -name "*.py"
 
# Directory size
du -sh /path/to/dir
 
# Copy directory
cp -r src/ dst/
 
# Move/rename
mv old_name.txt new_name.txt

# Search file contents (grep)
grep -r "search_term" --include="*.py" .
 
# Find files by name
find . -name "*.log" -mtime -7  # Modified in last 7 days
 
# Count lines
wc -l *.py

# Sort and deduplicate
sort file.txt | uniq > sorted.txt
 
# Extract columns
cut -d',' -f1,3 data.csv
 
# Replace text
sed -i '' 's/old/new/g' file.txt  # macOS
sed -i 's/old/new/g' file.txt     # Linux