Slack Print

Print files uploaded to a Slack channel. Supports smart matching: multiple files, filename prefix/keyword filter, file type (pdf/image), and time range ("just now" = "last 5 minutes"). Trigger when the user says things like "print the file from Slack", "print the PDF I just sent to Slack", "print the Slack file", etc.

Slack Print Skill

Strict rules:

• Do not use write/edit tools to create or modify any files
• Do not create Python scripts, test scripts, or any auxiliary files
• Only run existing shell scripts or lp commands via exec

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Print Files from Slack

Smart Matching: Interpret Intent → Set Variables → Call Script

User says	Environment variables
"Print the latest file" / "Print this file"	(default, no variables needed)
"Print the last two files" / "Print these two files"	LIMIT=2
"Print files starting with report"	NAME_PREFIX=report
"Print files with contract in the name"	NAME_CONTAINS=contract
"Print the PDF I just uploaded" / "Print the PDF from just now"	MINUTES=5 FILE_TYPE=pdf
"Print the last three files"	LIMIT=3 MINUTES=10

FILE_TYPE values: pdf / image / video / doc / file (default — matches all)

Invocation

bash

# Default: print latest file
PRINTER=MyPrinter <SKILL_DIR>/slack_fetch_and_print.sh

# Print the latest 2 files
PRINTER=MyPrinter LIMIT=2 <SKILL_DIR>/slack_fetch_and_print.sh

# Print files whose name starts with "report"
PRINTER=MyPrinter NAME_PREFIX=report <SKILL_DIR>/slack_fetch_and_print.sh

# Print PDFs uploaded in the last 5 minutes
PRINTER=MyPrinter MINUTES=5 FILE_TYPE=pdf <SKILL_DIR>/slack_fetch_and_print.sh

Script prints Sent to printer: <filename> for each file on success.

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Print Text Content Directly

bash

echo "content to print" | lp -d <PrinterName>

Multi-line content:

bash

cat > /tmp/openclaw_print.txt << 'EOF'
content
EOF
lp -d <PrinterName> /tmp/openclaw_print.txt

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List Available Printers

bash

lpstat -a

Check Print Queue

bash

lpq -P <PrinterName>

Cancel Print Jobs

bash

cancel -a <PrinterName>

Check Printer Status

bash

lpstat -p <PrinterName>