Requirements
- Target platform
- OpenClaw
- Install method
- Manual import
- Extraction
- Extract archive
- Prerequisites
- OpenClaw
- Primary doc
- SKILL.md
Tencent SkillHub ยท Developer Tools
Ssh Essentials
Essential SSH commands for secure remote access, key management, tunneling, and file transfers.
skill openclawclawhub Free
Essential SSH commands for secure remote access, key management, tunneling, and file transfers.
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Install for OpenClaw
Quick setup
- Download the package from Yavira.
- Extract the archive and review SKILL.md first.
- Import or place the package into your OpenClaw setup.
Package facts
- Download mode
- Yavira redirect
- Package format
- ZIP package
- Source platform
- Tencent SkillHub
- What's included
- SKILL.md
Validation
- Use the Yavira download entry.
- Review SKILL.md after the package is downloaded.
- Confirm the extracted package contains the expected setup assets.
Install with your agent
Agent handoff
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
New install
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
Upgrade existing
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
Trust & source
Release facts
- Source
- Tencent SkillHub
- Verification
- Indexed source record
- Version
- 1.0.0
Provenance
- Publisher
- Arnarsson
- Source page
- View original listing
- Canonical URL
- Open canonical page
Documentation
SSH Essentials
Secure Shell (SSH) for remote access and secure file transfers.
Connecting
# Connect with username ssh user@hostname # Connect to specific port ssh user@hostname -p 2222 # Connect with verbose output ssh -v user@hostname # Connect with specific key ssh -i ~/.ssh/id_rsa user@hostname # Connect and run command ssh user@hostname 'ls -la' ssh user@hostname 'uptime && df -h'
Interactive use
# Connect with forwarding agent ssh -A user@hostname # Connect with X11 forwarding (GUI apps) ssh -X user@hostname ssh -Y user@hostname # Trusted X11 # Escape sequences (during session) # ~. - Disconnect # ~^Z - Suspend SSH # ~# - List forwarded connections # ~? - Help
Generating keys
# Generate RSA key ssh-keygen -t rsa -b 4096 -C "your_email@example.com" # Generate ED25519 key (recommended) ssh-keygen -t ed25519 -C "your_email@example.com" # Generate with custom filename ssh-keygen -t ed25519 -f ~/.ssh/id_myserver # Generate without passphrase (automation) ssh-keygen -t ed25519 -N "" -f ~/.ssh/id_deploy
Managing keys
# Copy public key to server ssh-copy-id user@hostname # Copy specific key ssh-copy-id -i ~/.ssh/id_rsa.pub user@hostname # Manual key copy cat ~/.ssh/id_rsa.pub | ssh user@hostname 'cat >> ~/.ssh/authorized_keys' # Check key fingerprint ssh-keygen -lf ~/.ssh/id_rsa.pub # Change key passphrase ssh-keygen -p -f ~/.ssh/id_rsa
SSH agent
# Start ssh-agent eval $(ssh-agent) # Add key to agent ssh-add ~/.ssh/id_rsa # List keys in agent ssh-add -l # Remove key from agent ssh-add -d ~/.ssh/id_rsa # Remove all keys ssh-add -D # Set key lifetime (seconds) ssh-add -t 3600 ~/.ssh/id_rsa
Local port forwarding
# Forward local port to remote ssh -L 8080:localhost:80 user@hostname # Access via: http://localhost:8080 # Forward to different remote host ssh -L 8080:database.example.com:5432 user@jumphost # Access database through jumphost # Multiple forwards ssh -L 8080:localhost:80 -L 3306:localhost:3306 user@hostname
Remote port forwarding
# Forward remote port to local ssh -R 8080:localhost:3000 user@hostname # Remote server can access localhost:3000 via its port 8080 # Make service accessible from remote ssh -R 9000:localhost:9000 user@publicserver
Dynamic port forwarding (SOCKS proxy)
# Create SOCKS proxy ssh -D 1080 user@hostname # Use with browser or apps # Configure SOCKS5 proxy: localhost:1080 # With Firefox firefox --profile $(mktemp -d) \ --preferences "network.proxy.type=1;network.proxy.socks=localhost;network.proxy.socks_port=1080"
Background tunnels
# Run in background ssh -f -N -L 8080:localhost:80 user@hostname # -f: Background # -N: No command execution # -L: Local forward # Keep alive ssh -o ServerAliveInterval=60 -L 8080:localhost:80 user@hostname
SSH config file (~/.ssh/config)
# Simple host alias Host myserver HostName 192.168.1.100 User admin Port 2222 # With key and options Host production HostName prod.example.com User deploy IdentityFile ~/.ssh/id_prod ForwardAgent yes # Jump host (bastion) Host internal HostName 10.0.0.5 User admin ProxyJump bastion Host bastion HostName bastion.example.com User admin # Wildcard configuration Host *.example.com User admin ForwardAgent yes # Keep connections alive Host * ServerAliveInterval 60 ServerAliveCountMax 3
Using config
# Connect using alias ssh myserver # Jump through bastion automatically ssh internal # Override config options ssh -o "StrictHostKeyChecking=no" myserver
SCP (Secure Copy)
# Copy file to remote scp file.txt user@hostname:/path/to/destination/ # Copy file from remote scp user@hostname:/path/to/file.txt ./local/ # Copy directory recursively scp -r /local/dir user@hostname:/remote/dir/ # Copy with specific port scp -P 2222 file.txt user@hostname:/path/ # Copy with compression scp -C large-file.zip user@hostname:/path/ # Preserve attributes (timestamps, permissions) scp -p file.txt user@hostname:/path/
SFTP (Secure FTP)
# Connect to SFTP server sftp user@hostname # Common SFTP commands: # pwd - Remote working directory # lpwd - Local working directory # ls - List remote files # lls - List local files # cd - Change remote directory # lcd - Change local directory # get file - Download file # put file - Upload file # mget *.txt - Download multiple files # mput *.jpg - Upload multiple files # mkdir dir - Create remote directory # rmdir dir - Remove remote directory # rm file - Delete remote file # exit/bye - Quit # Batch mode sftp -b commands.txt user@hostname
Rsync over SSH
# Sync directory rsync -avz /local/dir/ user@hostname:/remote/dir/ # Sync with progress rsync -avz --progress /local/dir/ user@hostname:/remote/dir/ # Sync with delete (mirror) rsync -avz --delete /local/dir/ user@hostname:/remote/dir/ # Exclude patterns rsync -avz --exclude '*.log' --exclude 'node_modules/' \ /local/dir/ user@hostname:/remote/dir/ # Custom SSH port rsync -avz -e "ssh -p 2222" /local/dir/ user@hostname:/remote/dir/ # Dry run rsync -avz --dry-run /local/dir/ user@hostname:/remote/dir/
Hardening SSH
# Disable password authentication (edit /etc/ssh/sshd_config) PasswordAuthentication no PubkeyAuthentication yes # Disable root login PermitRootLogin no # Change default port Port 2222 # Use protocol 2 only Protocol 2 # Limit users AllowUsers user1 user2 # Restart SSH service sudo systemctl restart sshd
Connection security
# Check host key ssh-keygen -F hostname # Remove old host key ssh-keygen -R hostname # Strict host key checking ssh -o StrictHostKeyChecking=yes user@hostname # Use specific cipher ssh -c aes256-ctr user@hostname
Debugging
# Verbose output ssh -v user@hostname ssh -vv user@hostname # More verbose ssh -vvv user@hostname # Maximum verbosity # Test connection ssh -T user@hostname # Check permissions ls -la ~/.ssh/ # Should be: 700 for ~/.ssh, 600 for keys, 644 for .pub files
Common issues
# Fix permissions chmod 700 ~/.ssh chmod 600 ~/.ssh/id_rsa chmod 644 ~/.ssh/id_rsa.pub chmod 644 ~/.ssh/authorized_keys # Clear known_hosts entry ssh-keygen -R hostname # Disable host key checking (not recommended) ssh -o StrictHostKeyChecking=no user@hostname
Jump hosts (ProxyJump)
# Connect through bastion ssh -J bastion.example.com user@internal.local # Multiple jumps ssh -J bastion1,bastion2 user@final-destination # Using config (see Configuration section above) ssh internal # Automatically uses ProxyJump
Multiplexing
# Master connection ssh -M -S ~/.ssh/control-%r@%h:%p user@hostname # Reuse connection ssh -S ~/.ssh/control-user@hostname:22 user@hostname # In config: # ControlMaster auto # ControlPath ~/.ssh/control-%r@%h:%p # ControlPersist 10m
Execute commands
# Single command ssh user@hostname 'uptime' # Multiple commands ssh user@hostname 'cd /var/log && tail -n 20 syslog' # Pipe commands cat local-script.sh | ssh user@hostname 'bash -s' # With sudo ssh -t user@hostname 'sudo command'
Tips
Use SSH keys instead of passwords Use ~/.ssh/config for frequently accessed hosts Enable SSH agent forwarding carefully (security risk) Use ProxyJump for accessing internal networks Keep SSH client and server updated Use fail2ban or similar to prevent brute force Monitor /var/log/auth.log for suspicious activity Use port knocking or VPN for additional security Backup your SSH keys securely Use different keys for different purposes
Documentation
Official docs: https://www.openssh.com/manual.html Man pages: man ssh, man ssh_config, man sshd_config
Category context
Code helpers, APIs, CLIs, browser automation, testing, and developer operations.
Source: Tencent SkillHub
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Package contents
Included in package
1 Docs
- SKILL.md