table of contents
SYSTEMD-ASK-PASSWORD(1) | systemd-ask-password | SYSTEMD-ASK-PASSWORD(1) |
NAME¶
systemd-ask-password - Query the user for a system password
SYNOPSIS¶
systemd-ask-password [OPTIONS...] [MESSAGE]
DESCRIPTION¶
systemd-ask-password may be used to query a system password or passphrase from the user, using a question message specified on the command line. When run from a TTY it will query a password on the TTY and print it to standard output. When run with no TTY or with --no-tty it will query the password system-wide and allow active users to respond via several agents. The latter is only available to privileged processes.
The purpose of this tool is to query system-wide passwords -- that is passwords not attached to a specific user account. Examples include: unlocking encrypted hard disks when they are plugged in or at boot, entering an SSL certificate passphrase for web and VPN servers.
Existing agents are: a boot-time password agent asking the user for passwords using Plymouth; a boot-time password agent querying the user directly on the console; an agent requesting password input via a wall(1) message; an agent suitable for running in a GNOME session; a command line agent which can be started temporarily to process queued password requests; a TTY agent that is temporarily spawned during systemctl(1) invocations.
Additional password agents may be implemented according to the systemd Password Agent Specification[1].
If a password is queried on a TTY, the user may press TAB to hide the asterisks normally shown for each character typed. Pressing Backspace as first key achieves the same effect.
OPTIONS¶
The following options are understood:
--icon=
--timeout=
--echo
--no-tty
--accept-cached
--multiple
-h, --help
EXIT STATUS¶
On success, 0 is returned, a non-zero failure code otherwise.
SEE ALSO¶
NOTES¶
- 1.
- systemd Password Agent Specification
- 2.
- XDG Icon Naming Specification
systemd 219 |