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Full Discussion: users who loged within 5 minutes
Top Forums Shell Programming and Scripting users who loged within 5 minutes Post 302125181 by aigles on Wednesday 4th of July 2007 09:28:50 AM
Old 07-04-2007
The who command gives time when the user logged in.
Code:
$ LANG=C who -s
gssjgu:/g/g00k00/gssjgu/TMP> LANG=C who -s
gssjgu      pts/1       Jul  4 15:06    (1.1.1.11)  
getk00      pts/2       Jul  4 08:54    (1.1.1.2)   
gti001      pts/3       Jun 22 15:38    (1.1.1.39)  
$

The following script display informations about users who logged in since n minutes (n can be specified as a parameter of the script, the defaut value is 5).
Code:
$ cat log5.sh
#!/usr/bin/ksh

typeset -i SINCE=${1:-5}

#
# Get current date
#

date '+%Y +%m %d %H %M' | read year month day hour min

#
# Compute timestamp for current date minus $SINCE minutes 
# format 'mmddHHMM' ('cal' command usage)
#

(( min  -= SINCE ))
(( min  <  0 )) && { (( min += 60 )) ; (( hour -= 1 )) }
(( hour <  0 )) && { (( hour += 24 )) ; (( day -= 1 )) }
(( day  <=  0 )) && { 
   (( month -= 1 ))
   (( month <= 0 )) && { (( month=12 )) ; (( year -= 1 )) }
   day=$(cal $month $year | tr '\n' ' ' | awk '{print $NF}')
}

ts5=$(printf "%02d%02d%02d%02d" $month $day $hour $min)   
#
# Determine users logged on since $SINCE minutes
# (Based on 'who -s' command)'
#

LANG=C who -s |
awk -v ts5="$ts5" -F '[ \t:]*' '
   function to_timestamp(month, day, hour, min) {
      m = index("___,jan,feb,mar,apr,may,jun,jul,aug,sep,oct,nov,dec,", "," tolower(month) ",")/4;
      return sprintf("%02d%02d%02d%02d", m, day, hour, min);
   }
   to_timestamp($3, $4, $5, $6) >= ts5
'
$

Output:
Code:
$ LANG=C date
Wed Jul  4 15:22:04 DFT 2007
$ log5.sh
$ log5.sh 30
gssjgu      pts/1       Jul  4 15:06    (1.1.1.11)  
$

 

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LEARN ABOUT SUNOS

sulog

sulog(4)							   File Formats 							  sulog(4)

NAME

       sulog - su command log file

SYNOPSIS

       /var/adm/sulog

DESCRIPTION

       The  sulog file is a record of all attempts by users on the system  to execute the su(1M) command.  Each time  su(1M) is executed, an entry
       is added to the sulog file.

       Each entry in the sulog file is a single line of the form:

	      SU date time
	      result port user-newuser

       where

       date	       The month and date su(1M) was executed.	date is displayed in the form  mm/dd where  mm is the month number and dd  is  the
		       day number in the month.

       time	       The  time   su(1M) was executed. time is displayed in the form  HH/MM where  HH is the hour number (24 hour system) and	MM
		       is the minute number.

       result	       The result of the  su(1M) command.  A ` + ' sign is displayed in this field if the su attempt was successful; otherwise	 a
		       ` - ' sign is displayed.

       port	       The name of the terminal device from which  su(1M) was executed.

       user	       The user id of the user executing the  su(1M) command.

       newuser	       The user id being switched to with  su(1M).

EXAMPLES

       Example 1: A sample sulog file.

       Here is a sample sulog file:

       SU 02/25 09:29 + console root-sys
       SU 02/25 09:32 + pts/3 user1-root
       SU 03/02 08:03 + pts/5 user1-root
       SU 03/03 08:19 + pts/5 user1-root
       SU 03/09 14:24 - pts/5 guest3-root
       SU 03/09 14:24 - pts/5 guest3-root
       SU 03/14 08:31 + pts/4 user1-root

FILES

       /var/adm/sulog	       su log file

       /etc/default/su	       contains the default location of  sulog

SEE ALSO

       su(1M)

SunOS 5.10							    6 Jun 1994								  sulog(4)
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