10.2 Tidbits

Prepared by Peggy Bruehl, based on work by Kees Cook (c-cook@uiuc.edu) of the University of Illinois.

Swap

Swap space is no longer listed in the entries of the /etc/disktab file.
Swap devices are listed in /etc/fstab (/etc/fstab replaces /etc/checklist in 10.X)
File-system swap is the same as in 9.x and is still less efficient than device swap.
As in 9.x, device swap resides in its own reserved area on the disk.
If you are using the Logical Volume Manager (LVM), device swap has its own logical volume.
If you are using LVM, you can increase your device swap area at any time without having to reformat the disk.
The /usr/sbin/swapinfo command can only be run by root.
The /usr/sbin/swapinfo command now reports memory usage as well as swap usage.

Libraries

Shared and archive libraries still exist. Locations of libraries may have changed; see the file system table or use the /opt/upgrade/bin/fnlookup for new locations.
When a program is executed, the HP-UX dynamic loader (dld.sl) determines which libraries need to be loaded at run time.

Application software

The following software has been installed on 10.2 with little or no problems:

GNU binutils 2.7 (contains GNU as)
GNU make 3.74
GNU gcc 2.7.2
GNU gdb 4.16
GNU bison 1.25
GNU less 3.2.1
GNU enscript 1.4.0
GNU gzip 1.2.4
NCSA httpd 1.5.0a
UMN gopherd 2.3
Perl 5.003
RosettaMan 2.5a6
HP cc 10.10 (from Applications CD)
HP f77 10.10 (from Applications CD)
HP softbench 10.10 (from Applications CD)
nn 6.5.0b7
Xemacs 19.14
Netscape 3.0

If you encounter problems in compiling these programs for 10.2, please re-read the installation instructions or README files.

Miscellaneous Features

At bootup, root's shell (as set in /etc/passwd) should be /sbin/sh. You can choose another shell, however it must be located on the root disk/partition. This is because the /usr disk/partition is not mounted at the time that the init program needs to access the shell.
The filesystem has been completely changed in HP-UX 10.X. The new organization is system V release 4 and is the industry standard for UNIX systems. Linux users will note many similarities. For help navigating, please see the following table or use the /opt/upgrade/bin/fnlookup command.
If you are using LVM, the device files in /dev are organized differently.
- Each volume group has it's own subdirectory (i.e./dev/vg00)
- You may choose the name for your volume groups (i.e. /dev/uservg or /dev/spoolvg)
- In each subdirectory, there is a block and character device file for each logical volume in that group. (i.e. /dev/vg00/lvol1 (block) and /dev/vg00/rlvol1 (character) )
HP application software is installed in the /opt directory (opt stands for optional software). You may have to add /opt/package.name/bin to your $PATH.
By default, HP-UX core OS installs /usr/local and all subdirectories (bin, man, lib, etc.) as world-writable. This is the HP default, but it is probably not a very secure set up. You might consider changing world-writable files back to user- & group-writable only. Be cautious about changing permissions on some of those files (i.e. spool directories and the like) as some may require the world-writable permission.