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Full Discussion: Users Not Logged in
Top Forums Shell Programming and Scripting Users Not Logged in Post 302302008 by methyl on Sunday 29th of March 2009 06:45:23 PM
Old 03-29-2009
Please state your Operating System and version and preferred Shell in questions.
There is no generic unix command to show who has an account but is not logged in. There are enhanced versions of "finger" on some unixes but this is non-standard.

We can subtract "who -u" from "logins". We could equally use "listusers" instead of "logins" or even read /etc/passwd directly.
For example:

Code:
#!/bin/ksh
# Who is logged in now?
who -u | awk '{print $1}' >/tmp/who_u.$$
# Who has an account?
logins | awk '{print $1}' > /tmp/logins.$$
# Users who appear in "logins" but not in "who -u"
cat /tmp/logins.$$ /tmp/who_u.$$ | sort | uniq -u | pg
# Clean up temporary files
rm /tmp/logins.$$
rm /tmp/who_u.$$

 

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logins(1M)																logins(1M)

NAME
logins - display system and user login data SYNOPSIS
groups] logins] DESCRIPTION
displays data concerning system and user logins. The format and content of the output is controlled by command options and may include: system or user login, user ID number, comment field value (for example, user name, location), primary group name, primary group ID, supple- mentary group names, supplementary group IDs, home directory, login shell, user security level, user audit events, and password aging parameters. The default data is: login, user ID, primary group name, primary group ID, and comment field value. Output is sorted by user ID, with user logins following system logins. The default output consists of login, user ID, primary group, primary group ID and comment field formatted into columns. The following options are available to this command: Display two account expiration fields. The fields show how long the account can be unused (in days) before it becomes inactive and the date the account will expire. Display logins with duplicate UIDs. Show multiple group membership data. Display with alternate format of one line of colon separated fields. Display logins with no passwords Display all system logins Sort output by login rather than UID. Display all user logins. Display extended information about selected users. This extended information includes home directory, login shell and password aging data, each on its own line. Password information consists of pass- word status (PS for valid password, LK for locked and NP for no password) and, if a password is present, date of last change, required number of days between changes, and number of days allowed between changes. In the case of non-trusted systems, the date of last change will be the latest Thursday since the change. Display all users belonging to groups, sorted by login. A comma separated list specifies multiple groups. Display the requested logins. A comma separated list specifies multiple logins. Specify a switch used to classify NIS or local users. With the option, only users belonging to the specified repository are displayed. Multiple options may be used. Any login matching any of the criteria will be displayed. A login will be displayed only once, even if it meets multiple criteria. EXAMPLES
List all logins in default format. List all logins that have no password or have a duplicate UID in default format. List all system logins in the alternate format. List all local users of the system. List all the NIS users of the system. WARNINGS
HP-UX 11i Version 3 is the last release to support trusted systems functionality. FILES
HP-UX password file. HP-UX group file. SEE ALSO
listusers(1), passwd(1), group(4), passwd(4), prpwd(4), shadow(4). STANDARDS CONFORMANCE
logins(1M)
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