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Full Discussion: Inactive Session
Top Forums UNIX for Dummies Questions & Answers Inactive Session Post 302075826 by grial on Wednesday 7th of June 2006 04:22:09 AM
Old 06-07-2006
It comes to my mind one thing...
who -u gives you info about login sessions. One of the fields is "line activity". You could check (with a crontab, for example) this time and kill the user (last field of de output is the pid of the sell) when he/she reaches x time of inactivity... But this will only work while the user is logged in...
Test Your Knowledge in Computers #286
Difficulty: Easy
AIX Version 1 was introduced in 1986 for the IBM RT PC workstation, was based on HP-UX.
True or False?

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SD_UID_GET_STATE(3)                                              sd_uid_get_state                                              SD_UID_GET_STATE(3)

sd_uid_get_state, sd_uid_is_on_seat, sd_uid_get_sessions, sd_uid_get_seats - Determine login state of a specific Unix user ID SYNOPSIS
#include <systemd/sd-login.h> int sd_uid_get_state(uid_t pid, char** state); int sd_uid_is_on_seat(uid_t pid, int require_active, const char* seat); int sd_uid_get_sessions(uid_t pid, int require_active, char*** sessions); int sd_uid_get_seats(uid_t pid, int require_active, char*** seats); DESCRIPTION
sd_uid_get_state() may be used to determine the login state of a specific Unix user identifier. The following states are currently known: offline (user not logged in at all), lingering (user not logged in, but some user services running), online (user logged in, but not active), active (user logged in on an active seat). In the future additional states might be defined, client code should be written to be robust in regards to additional state strings being returned. The returned string needs to be freed with the libc free(3) call after use. sd_uid_is_on_seat() may be used to determine whether a specific user is logged in or active on a specific seat. Accepts a Unix user identifier and a seat identifier string as parameters. The require_active parameter is a boolean. If non-zero (true) this function will test if the user is active (i.e. has a session that is in the foreground and accepting user input) on the specified seat, otherwise (false) only if the user is logged in (and possibly inactive) on the specified seat. sd_uid_get_sessions() may be used to determine the current sessions of the specified user. Acceptes a Unix user identifier as parameter. The require_active boolean parameter controls whether the returned list shall consist of only those sessions where the user is currently active (true) or where the user is currently logged in at all, possibly inactive (false). The call returns a NULL terminated string array of session identifiers in sessions which needs to be freed by the caller with the libc free(3) call after use, including all the strings referenced. If the string array parameter is passed as NULL the array will not be filled in, but the return code still indicates the number of current sessions. Note that instead of an empty array NULL may be returned and should be considered equivalent to an empty array. Similar, sd_uid_get_seats() may be used to determine the list of seats on which the user currently has sessions. Similar semantics apply, however note that the user may have multiple sessions on the same seat as well as sessions with no attached seat and hence the number of entries in the returned array may differ from the one returned by sd_uid_get_sessions(). RETURN VALUE
On success sd_uid_get_state() returns 0 or a positive integer. If the test succeeds sd_uid_is_on_seat() returns a positive integer, if it fails 0. sd_uid_get_sessions() and sd_uid_get_seats() return the number of entries in the returned arrays. On failure, these calls return a negative errno-style error code. NOTES
The sd_uid_get_state(), sd_uid_is_on_seat(), sd_uid_get_sessions(), and sd_uid_get_seats() interfaces are available as shared library, which can be compiled and linked to with the libsystemd-login pkg-config(1) file. SEE ALSO
systemd(1), sd-login(7), sd_pid_get_owner_uid(3) AUTHOR
Lennart Poettering <> Developer systemd 10/07/2013 SD_UID_GET_STATE(3)

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