tldr/pages/linux/chat.md

chat

Automate conversations with a modem or serial device. Commonly used to establish PPP (Point-to-Point Protocol) connections. More information: https://manned.org/chat.8.

• Execute a chat script directly from the command line:

chat '{{expect_send_pairs}}'

• Execute a chat script from a file:

chat -f '{{path/to/chat_script}}'

• Set a custom timeout (in seconds) for expecting a response:

chat -t {{timeout_in_seconds}} '{{expect_send_pairs}}'

• Enable verbose output to log the conversation to syslog:

chat -v '{{expect_send_pairs}}'

• Use a report file to log specific strings received during the conversation:

chat -r {{path/to/report_file}} '{{expect_send_pairs}}'

• Dial a phone number using a variable, substituting \T in the script:

chat -T '{{phone_number}}' '{{"ATDT\\T CONNECT"}}'

• Include an abort condition if a specific string is received:

chat 'ABORT "{{error_string}}" {{expect_send_pairs}}'