You do it with pkgadd the same way you do it with every other command... You check the man page for the utility in question to see what exit code it produces when it succeeds. You run the command. You check the exit code after the command completes. And, if the exit code matches the exit code listed on the man page for that utility for successful completion, then you know the command succeeded; otherwise, it failed.

As with about 99.44% of utilities, pkgadd exits with exit code 0 if it completed successfully. Of course, the way you check the exit status varies depending on the shell you use (and you haven't bothered to tell us what shell you use). If we make the wild assumption that you're using sh, ksh, bash, or /usr/xpg4/bin/sh (or another shell based on Bourne shell syntax), you could try something like:

Code:

pkgadd -a $INSTP/install/dadmin -d $INSTP/install/apachesrv.pkg>/tmp/install.log
ec=$?
if [ $ec -eq 0 ]
then	echo 'pkgadd succeeded'
else	echo "pkgadd failed as indicated by diagnostics above and exited with exit code $ec"
fi
exit $ec