STRIPLN(1M)         RISC/os Reference Manual          STRIPLN(1M)



NAME
     stripln - strip old links for update installation

SYNTAX
     stripln [ -t timestamp ] bomfile ...

DESCRIPTION
     stripln is used to remove certain files from the currently
     installed version of a software package prior to installing
     a new version as an update.  When used with the -t option,
     it can also be used to remove all files named in a set of
     bomfiles which bear a particular file modification times-
     tamp.

     Each of the bomfiles in the argument list is read. For each
     file mentioned in the bomfile, it is removed on the target
     system if:

     1) The -t option is was specified and the modifcation times-
        tamp on the file matches the -t option argument. If the
        -t option is not specified, then the file will be removed
        if either of the following conditions is met:

     2) The file in the bom is not a symbolic link and there is a
        file present on the system with the same pathname which
        is a symbolic link. This is done to prevent a file which
        has changed from a symbolic link to something else from
        being installed in the wrong place during an update,
        since the existing symbolic link would be followed when
        the updated file is extracted from the tar archive.

     3) The file is the ``master link'' (i.e., has a null link
        target field in the bom entry) of a multiply linked file
        (i.e., is a plain file with a link count greator than one
        in the bom entry.) This is to break links where version-
        specific links are to be restablished when an update is
        installed, without altering existing version-specific
        links. For instance, consider a compiler update release
        where /usr/bin/cc1.21 is presently  hard-linked to
        /usr/bin/cc on the target system, and /usr/bin/cc1.22 is
        to be installed; in this case, the link between
        /usr/bin/cc1.21 and /usr/bin/cc must be broken prior to
        installing /usr/bin/cc1.22, or the /usr/bin/1.21 file
        will be linked to /usr/bin/1.22.

FILES
     /usr/pkg/bin/stripln

SEE ALSO
     bom(4) in the Programmer's Reference Manual.





                        Printed 11/19/92                   Page 1