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Full Discussion: expect and cron
Top Forums UNIX for Dummies Questions & Answers expect and cron Post 302222636 by rein on Thursday 7th of August 2008 08:25:08 AM
Old 08-07-2008
expect and cron
I have the following expect script, which I want to run in cron. It fails however, very likely due to the fact that there's no /dev/tty available.

Code:
set timeout 30
spawn -nottycopy -nottyinit /usr/bin/ssh $hostname $command
match_max 100000
expect "password"
send -- "$password"
send -- "\r"
interact

I added the -nottycopy -nottyinit arguments in the hope that would cause spawn to not try to recreate /dev/tty but it didn't work. Also, switching of interact doesn't work. The code works on a command line.

Any ideas anyone?
 

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LEARN ABOUT X11R4

systemd-tty-ask-password-agent

SYSTEMD-TTY-ASK-PASSWORD-AGENT(1)			  systemd-tty-ask-password-agent			 SYSTEMD-TTY-ASK-PASSWORD-AGENT(1)

NAME

       systemd-tty-ask-password-agent - List or process pending systemd password requests

SYNOPSIS

       systemd-tty-ask-password-agent [OPTIONS...] [VARIABLE=VALUE...]

DESCRIPTION

       systemd-tty-ask-password-agent is a password agent that handles password requests of the system, for example for hard disk encryption
       passwords or SSL certificate passwords that need to be queried at boot-time or during runtime.

       systemd-tty-ask-password-agent implements the Password Agents Specification[1], and is one of many possible response agents which answer to
       queries formulated with systemd-ask-password(1).

OPTIONS

       The following options are understood:

       --list
	   Lists all currently pending system password requests.

       --query
	   Process all currently pending system password requests by querying the user on the calling TTY.

       --watch
	   Continuously process password requests.

       --wall
	   Forward password requests to wall(1) instead of querying the user on the calling TTY.

       --plymouth
	   Ask question with plymouth(8) instead of querying the user on the calling TTY.

       --console
	   Ask question on /dev/console instead of querying the user on the calling TTY.

       -h, --help
	   Print a short help text and exit.

       --version
	   Print a short version string and exit.

EXIT STATUS

       On success, 0 is returned, a non-zero failure code otherwise.

SEE ALSO

       systemd(1), systemctl(1), systemd-ask-password-console.service(8), wall(1), plymouth(8)

NOTES

	1. Password Agents Specification
	   https://www.freedesktop.org/wiki/Software/systemd/PasswordAgents

systemd 237													 SYSTEMD-TTY-ASK-PASSWORD-AGENT(1)
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