printer

# Printer (CUPS)

Control printers on macOS using built-in CUPS commands. No external CLI needed.

## Discover printers

```bash
# Network printers (Bonjour/AirPrint)
dns-sd -B _ipp._tcp . 2>/dev/null & sleep 3; kill $! 2>/dev/null

# Get printer details (host, port, resource path)
dns-sd -L "Printer Name" _ipp._tcp . 2>/dev/null & sleep 3; kill $! 2>/dev/null

# CUPS-native discovery
lpstat -e                         # available network destinations
lpinfo --include-schemes dnssd -v # dnssd backends

# IPP discovery
ippfind --timeout 5
```

## Add a printer (driverless IPP Everywhere)

```bash
# Recommended: driverless queue
lpadmin -p MyPrinter -E -v "ipp://printer.local:631/ipp/print" -m everywhere

# Set as default
lpadmin -d MyPrinter

# Enable SNMP supply reporting (toner levels)
sudo lpadmin -p MyPrinter -o cupsSNMPSupplies=true
```

## Print files

```bash
lp filename.pdf                      # to default printer
lp -d MyPrinter filename.pdf         # specific printer
lp -d MyPrinter -n 2 file.pdf        # 2 copies
lp -d MyPrinter -o sides=two-sided-long-edge file.pdf  # duplex
lp -d MyPrinter -o media=letter file.pdf
lp -d MyPrinter -o ColorModel=Gray file.pdf  # grayscale

# Print text directly
echo "Hello World" | lp -d MyPrinter
```

## Queue management

```bash
# Check status
lpstat -p MyPrinter        # printer status
lpstat -o MyPrinter        # queued jobs
lpstat -t                  # everything
lpq -P MyPrinter           # BSD-style queue view

# Cancel jobs
cancel JOB_ID
cancel -a MyPrinter        # cancel all

# Enable/disable
cupsenable MyPrinter       # resume printing
cupsdisable MyPrinter      # pause printer
cupsaccept MyPrinter       # accept new jobs
cupsreject MyPrinter       # reject new jobs
```

## Printer options

```bash
# List available options for a printer
lpoptions -p MyPrinter -l

# Set default options (per-user)
lpoptions -p MyPrinter -o sides=two-sided-long-edge

# Set server-side defaults
sudo lpadmin -p MyPrinter -o sides-def...