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Full Discussion: Bashrc File - Conditional Command Execution?
Top Forums UNIX for Dummies Questions & Answers Bashrc File - Conditional Command Execution? Post 302934769 by mrm5102 on Tuesday 10th of February 2015 12:47:06 PM
Old 02-10-2015
Bashrc File - Conditional Command Execution?
Hello All,

I was wondering if there is a way to execute a command in my ".bashrc" file based on how I logged into the PC?

I was thinking maybe there is a way to check how the user (*myself) logged in, maybe somehow with the who command along with something else, but I'm not sure... I know I could run who and then check to see if there is a remote user logged in, but I didn't see a way of proving that the remote user shown in the who command's output was me or not?

I know I could do this below, but there could also be other user's remotely logged in, or multiple terminals open, etc... So I couldn't just say something like, "If there is an IP Address found in the 'who' commands output, then I'm a remote user...."
Code:
# who
user1 :0           2014-07-08 00:00 (console)
user1 pts/0        2015-02-10 10:47 (:0.0)
user2 pts/1        2015-02-10 12:01 (192.168.123.789)
user1 pts/2        2015-02-10 10:55 (:0.0)
user1 pts/3        2015-02-10 10:56 (:0.0)
user2 pts/4        2015-02-10 12:28 (192.168.123.456)      <--**** THIS IS ME ****

So I guess, is there anyway to tell that user2 in the output above is myself? Maybe by finding out which pts I'm using..?

Could anyone point me in the right direction on where I should/could start with finding this out..? Any thoughts or suggestions would be greatly appreciated!

Thanks in Advance,
Matt



********** EDIT **********
I think I may have found something in Google'ing around a bit more...
I knew of the "who", "whoami", "w", "users" commands but I had never seen the "who am i" command (*with Spaces) which printed the following:
Code:
# who am i
user2     pts/4        2015-02-10 12:28  (192.168.123.456)

So I guess I'll see if I can give this a try...
Last edited by mrm5102; 02-10-2015 at 01:56 PM..
 

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LEARN ABOUT OPENSOLARIS

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 5.11							    6 Jun 1994								  sulog(4)
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