【linux】log 保存和过滤

log 保存

./run.sh 2>&1 | tee -a /home/name/log.txt

log 过滤

import os
import re# Expanded regular expression to match a wider range of error patterns
error_patterns = re.compile(# r'(error|exception|traceback|fail|failed|fatal|critical|warn|warning)', r'(error|exception|traceback|fail|failed|fatal|critical)', re.IGNORECASE
)# List of log files to process
log_files = ['log_1.txt', 'log_2.txt', 'log_3.txt', 'log_4.txt']# Create a directory to save filtered logs
filtered_dir = 'filtered_logs'
os.makedirs(filtered_dir, exist_ok=True)# Number of context lines to show before and after the match
context_lines = 20# Process each log file
for log_file in log_files:with open(log_file, 'r') as infile:lines = infile.readlines()# Find the indices of lines that match error patternserror_indices = [i for i, line in enumerate(lines) if error_patterns.search(line)]# Collect the context lines for each errorerror_contexts = []for idx in error_indices:start = max(0, idx - context_lines)end = min(len(lines), idx + context_lines + 1)error_contexts.extend(lines[start:end])error_contexts.append("\n" + "="*80 + "\n")  # Separator for readability# Write the context lines to a new filefiltered_log_file = os.path.join(filtered_dir, f'filtered_{log_file}')with open(filtered_log_file, 'w') as outfile:outfile.writelines(error_contexts)print(f'Filtered errors with context written to {filtered_log_file}')