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Ignore "a line" within /etc/profile only when su'ing

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Top Forums Shell Programming and Scripting Ignore "a line" within /etc/profile only when su'ing
# 8  
Old 01-30-2009
Quote:
Originally Posted by lwif
I tried using "awk 'NR==1{next}1'" but I get this error -
awk: syntax error near line 1
awk: bailing out near line 1

I would rather not edit the scripts - becasue there are many. I want to be able to place some logic in the /etc/profile to determine is the user is changed by using su then ignore the command.
Use nawk or /usr/xpg4/bin/awk on Solaris.

Regards
# 9  
Old 01-30-2009
Or test the three UID's of the process
Code:
#include <unistd.h>
#include <stdio.h>

/*  iamsu.c 
   return zero if real effective and saved uid's do not match
   ie., su'ed process
*/
int main(void)
{
	uid_t real=0;
	uid_t effective=0;
	uid_t saved=0;
	int retval=0;
	
	getresuid (&real, &effective, &saved);
             retval=(real==effective && effective==saved) ? 1 : 0;

	return retval;
}

Code:
# 
iamsu ||  ## bit of code you want to run only when NOT su'ed ##
# or
iamsu
if [[ $? -eq 1 ]] ; then
      echo 'i am not su'
else
      echo 'i am su '
fi

# 10  
Old 01-30-2009
I guess when you do su - oracle, the value of whoami would be oracle...

Probably you could put a check in your .profile file something like this:

Quote:
if [[ whoami -ne "oracle" ]]; then
echo "^[]2;$(hostname)-(ABC) @ $(who am i)^G"
fi
Hope this helps...

regards,
Arun.
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