Programming

Does anyone know graceful way to get information about system?
Information I am interested in is:
Is there a good way to get such info on different unix systems (SunOS, Linux for example)? Maybe some POSIX calls.
All answers are welcome.

Total size of physical memory------lscfg
Number of processors, their types and frequency -------lscfg
Total and free size of swap------
use the following script

*****************************************************
#!/usr/bin/ksh
#memory calculator
um=`svmon -G | head -2|tail -1| awk {'print $3'}`
um=`expr $um / 256`
tm=`lsattr -El sys0 -a realmem | awk {'print $2'}`
tm=`expr $tm / 1000`
fm=`expr $tm - $um`
echo "\n\n-----------------------";
echo "System : (`hostname`)";
echo "-----------------------\n\n";

echo "\n\n-----------------------";
echo " Users Login information \n";

for ENTRY in `finger | cut -d " " -f1 | grep -v Login | uniq`
do
echo "`finger -l $ENTRY | head -1 | cut -d \" \" -f14` ---> `finger -l $ENTRY |
awk '{ print $2 }' | tail -2 | head -1`";
#finger -l $ENTRY | awk '{ print $2 }' | tail -2 | head -1;
done
echo "-----------------------\n";

echo "\n----------------------";
echo "Memory Information\n\n";
echo "total memory = $tm MB"
echo "free memory = $fm MB"
echo "used memory = $um MB"
echo "\n\n-----------------------\n";
*******************************************

Mount point of file system for known directory --- df

that doesn't work for multiple systems, SunOS for example. And this requires using system tools. Is there possibility to implement such features as C code?

No. That is the whole point - sysadmin is OS specific. You have to write a Solaris version, Linux version, HP UX version, etc. There are no POSIX api calls that do this kind of thing.

See the Unix Rosetta Stone Rosetta Stone for Unix to get an idea how messy it is.

Thanks a lot.