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Full Discussion: please help with openbsd 2.9
Top Forums UNIX for Dummies Questions & Answers please help with openbsd 2.9 Post 3123 by Neo on Saturday 23rd of June 2001 10:03:54 AM
Old 06-23-2001
Code:
-rwxr-xr-x   1 root     root         7736 Mar 21  2000 libutil-2.1.3.so*
lrwxrwxrwx   1 root     root           16 Aug 19  1994 libutil.so.1 -> libutil-2.1.3.so*

The example above is from my /lib directory on one of my servers. Notice that the shared library file is libutil-2.1.3.so, which was the current version when I did my installation. It might be libutil-2.1.5 now (for all I know Smilie ) because shared lib (like all dynamic code) changes frequently to add features and to fix bugs in the code.<P>
However, all code that used the shared library must have a symbol or token to represent the library, this is normally something like libutil.so.X. Normally libutil.so.3 will work in code designed for libutil.so.2 (but not always!). <P>
So, when you install a new library, for example libutil-3.1.1 you must create a symbolic link (as required). In the example above, you might do an:

Code:
ln -sf libutil-3.1.1.so libutil.so.1

This might not be enough, because newer code might look for the token libutil.so.3 !! So, you also must do:

Code:
ln -sf libutil-3.1.1.so libutil.so.3

Which creates another symbolic link, as required. <P>
<A HREF=http://forums.unix.com/showthread.php?threadid=513&highlight=symbolic+link>'what is a symbolic link?' (the question) was discussed here</A>
<P>
Fixed typo (thanks MIB!)
 

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LEARN ABOUT NETBSD

sysinst

SYSINST(8)						    BSD System Manager's Manual 						SYSINST(8)

NAME

     sysinst -- install or upgrade a NetBSD system

SYNOPSIS

     sysinst [-D] [-f deffile] [-r releasename]

DESCRIPTION

     sysinst is a menu-based program that may be used to install or upgrade a NetBSD system.  It is usually invoked automatically when the system
     is booted from appropriate installation media.

     sysinst is usually not present on a NetBSD system that has been fully installed.

OPTIONS

     -D 	     Switch on debugging.

     -r releasename  Set the releasename if it is different to the one compiled.  Currently unused.

     -f deffile      Set a file for definitions other than the defaults.  See DEFINITION FILE for its format.

DEFINITION FILE

     The definition file is used to set several other names and directories to search for.  You can specify any of the options in the file.  They
     are stored as:
	   option = value
     pairs.  In this description, REL and MACH are the release and architecture respectively, determined by the image sysinst is used on.

     option name	 default value		  description
     release		 REL			  Release name (also set by -r releasename).
     machine		 MACH			  Machine architecture
     xfer dir		 /usr/INSTALL		  Transfer dir
     ext dir					  Extract dir (will usually be set later on)
     ftp host		 ftp.NetBSD.org 	  ftp host for fetching files
     ftp dir		 pub/NetBSD/NetBSD-REL	  ftp directory for fetching files
     ftp prefix 	 /MACH/binary/sets	  directory to look for sets. Note that this is used for all kinds of fetching (CDs, local FS,
						  ...), not only ftp.
     ftp user		 ftp			  ftp user for connecting
     ftp pass		 -			  ftp password
     ftp proxy		 -			  ftp proxy
     nfs host		 -			  nfs host for fetching via nfs
     nfs dir		 /bsd/release		  nfs directory for fetching files
     cd dev		 cd0a			  name of the CD device for fetching files
     fd dev		 /dev/fd0a		  name of floppy for fetching files
     local dev		 -			  Other device to be mounted for fetching files
     local fs		 ffs			  FS-type for local dev
     local dir		 release		  Directory to look for in the mounted local fs
     targetroot mount	 /targetroot		  Directory to mount target root dir to
     dist postfix	 .tgz			  Suffix of set files to be extracted
     diskname		 mydisk 		  disktab(5) diskname to use for target disk

SEE ALSO

     release(7), afterboot(8), boot(8), diskless(8)

     <machine>/INSTALL.* files on CD-ROM installation media .../NetBSD-<rel>/<machine>/INSTALL.* files in NetBSD releases or snapshots.

HISTORY

     A sysinst command appeared in NetBSD 1.3.

BSD
								September 17, 2011							       BSD
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