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# TermTCP CLI - Quick Start
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## 60 Second Setup
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### 1. Compile (30 seconds)
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```bash
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cd termtcp_cli
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make -f Makefile_CLI
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```
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### 2. Run (5 seconds)
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```bash
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./termtcp
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```
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### 3. Connect (25 seconds)
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```
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> list # See available hosts
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> connect 0 # Connect to first host
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> Hello from TermTCP! # Send a message
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> disconnect # Close connection
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> quit # Exit
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```
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---
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## What You Get
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✅ Lightweight TCP terminal client
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✅ No GUI dependencies (CLI only)
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✅ Multiple host configuration
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✅ Session logging
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✅ Color output
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✅ ~400 lines of code
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✅ Single file, no external libs
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---
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## First Steps
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### 1. Build
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```bash
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make -f Makefile_CLI
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./termtcp
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```
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First run creates: `~/.termtcprc`
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### 2. Configure Hosts
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Edit `~/.termtcprc`:
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```
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# Your hosts here
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localhost 8011 My Local System
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example.com 9000 Remote Server
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```
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### 3. Use It
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```
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> list # Show hosts
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> connect 0 # Connect
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> Type anything # Send to server
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> disconnect # Close connection
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```
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---
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## Common Commands
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```
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connect [0-4] Connect to host 0-4
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disconnect Disconnect
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list Show configured hosts
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log on/off Enable/disable logging
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color on/off Enable/disable colors
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status Show connection status
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help Show command help
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quit Exit program
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```
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---
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## Command-Line Usage
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```bash
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# Auto-connect to host 0
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termtcp -c 0
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# Auto-connect with logging
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termtcp -c 0 -l
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# Disable colors
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termtcp -n
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# Show help
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termtcp -h
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```
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---
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## File Locations
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| File | Purpose |
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|------|---------|
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| `~/.termtcprc` | Host configuration |
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| `hostname_port_*.log` | Session logs (if enabled) |
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---
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## Building
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### Requirements
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- GCC/Clang
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- Linux/macOS/BSD
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### Commands
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```bash
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make -f Makefile_CLI # Build
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make -f Makefile_CLI run # Build & run
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make -f Makefile_CLI debug # Debug build
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make -f Makefile_CLI clean # Clean
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make -f Makefile_CLI install # Install
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```
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---
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## Troubleshooting
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| Problem | Solution |
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|---------|----------|
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| "Connection refused" | Check host/port in config |
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| "Connection timeout" | Server might be down |
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| Terminal frozen | Press Ctrl+C or type quit |
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| Colors look wrong | Try `color off` |
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| Can't find hosts | Check `~/.termtcprc` format |
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---
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## Configuration Format
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File: `~/.termtcprc`
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```
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# Comments start with #
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# Format: host port name
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localhost 8011 My System
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example.com 9000 Remote
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```
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That's it! No quotes needed.
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---
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## Real-World Examples
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### Connect to BBS
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```bash
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# In ~/.termtcprc:
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bbs.example.net 9000 Classic BBS
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# Then:
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termtcp
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> connect 0
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> help (usually gets you started)
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```
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### Check Remote System
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```bash
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termtcp -c 0
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> QUERY
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> STATUS
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> quit
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```
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### Debug Connection Issues
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```bash
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termtcp -c 0 -l
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> [try to do something]
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# Check the log file created
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```
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---
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## Keyboard Shortcuts
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```
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Ctrl+C Exit immediately
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Enter Send line to server
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/command Use / prefix for commands
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```
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Wait, that last one isn't real. Just type commands normally:
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```
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help (actual command)
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/help (NOT needed)
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```
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---
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## Features at a Glance
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✅ Connect to TCP servers
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✅ Send/receive text
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✅ Multiple host profiles
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✅ Automatic session logging
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✅ Colored output (optional)
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✅ Configuration file support
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✅ Command system
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✅ Status display
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---
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## Program Flow
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```
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Start
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↓
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Load ~/.termtcprc
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↓
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Show prompt
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↓
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User enters command
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├─ "connect" → Connect to server
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├─ "send data" → Send to server
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├─ "log" → Start/stop logging
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└─ "quit" → Exit
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↓
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Repeat until quit
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↓
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Cleanup & exit
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```
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---
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## Comparing CLI to GTK3 Version
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**Use CLI when:**
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- No GUI environment
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- Lightweight needed
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- Scripting/automation
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- Remote connection
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- Simple connectivity
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**Use GTK3 when:**
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- Visual interface needed
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- Multiple simultaneous connections
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- Port monitoring required
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- Desktop environment available
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---
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## Tips & Tricks
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### Auto-connect on startup
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```bash
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termtcp -c 0 # Connects to host 0
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```
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### Log everything
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```bash
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termtcp -c 0 -l # Connects and starts logging
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```
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### Script with pipes
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```bash
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echo "QUERY" | termtcp -c 0
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```
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### Create alias
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```bash
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# In ~/.bashrc:
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alias mybbс='termtcp -c 0'
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# Then just:
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mybbs
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```
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---
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## Logging Details
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When `log on` is enabled:
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- File created: `hostname_port_YYYYMMDD_HHMMSS.log`
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- Contains: All sent/received data with timestamps
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- Format: `[HH:MM:SS] SEND/RECV: data`
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- Location: Current working directory
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Example:
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```
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[14:35:22] SEND: HELLO
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[14:35:23] RECV: Welcome!
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[14:35:24] SEND: QUERY
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```
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---
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## Performance
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| Metric | Value |
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|--------|-------|
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| Binary Size | ~40KB |
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| Memory Usage | ~50KB |
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| Startup Time | <100ms |
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| CPU Usage | Minimal |
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| Max Line | 512 chars |
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---
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## Getting Help
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In the program:
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```
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> help # Show commands
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> status # Show connection status
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> list # Show configured hosts
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```
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In the shell:
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```bash
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termtcp -h # Show options
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```
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---
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## Next Steps
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1. ✅ Build: `make -f Makefile_CLI`
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2. ✅ Run: `./termtcp`
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3. ✅ Configure: Edit `~/.termtcprc`
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4. ✅ Connect: Type `connect 0`
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5. ✅ Use: Send and receive data
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6. ✅ Log: Enable with `log on` if needed
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---
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## Quick Reference Card
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```
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START: termtcp
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SHOW HELP: help
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LIST HOSTS: list
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CONNECT: connect 0
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SEND: type anything
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LOG ON: log on
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LOG OFF: log off
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COLORS ON: color on
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COLORS OFF: color off
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STATUS: status
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EXIT: quit
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```
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---
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**You're ready!** Run `make -f Makefile_CLI && ./termtcp` 🚀
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For more details, see: README_CLI.md
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