iraf/vnnn/DUNX,
where "vnnn" is the IRAF version number, e.g., subdirectory
iraf/v211/DUNX for V2.11 DUNX/IRAF.
If IRAF is being installed from a network distribution all the architecture
independent IRAF files for both the core IRAF system and the NOAO packages
will be in the distribution file as.dunx.gen. This "file" is stored
in the network archive as a directory wherein the large distribution file
has been split into a number of smaller pieces, e.g.,
% ls as.dunx.gen
CHECKSUMS as.dunx.gen.Z.12 as.dunx.gen.Z.26
FILES.Z as.dunx.gen.Z.13 as.dunx.gen.Z.27
as.dunx.gen.Z.00 as.dunx.gen.Z.14 as.dunx.gen.Z.28
as.dunx.gen.Z.01 as.dunx.gen.Z.15 as.dunx.gen.Z.29
as.dunx.gen.Z.02 as.dunx.gen.Z.16 as.dunx.gen.Z.30
as.dunx.gen.Z.03 as.dunx.gen.Z.17 as.dunx.gen.Z.31
(etc.)
as.dunx.gen as shown above has been
recreated somewhere on the machine on which IRAF is to be installed.
We can restore the main IRAF source tree as follows.
% whoami iraf % cd $iraf % cat /path/as.dunx.gen/as.* | uncompress | tar -xf -After the above finishes the root IRAF directory should appear as follows (this is for V2.11).
HS.DUNX.GEN bin.alpha doc math pkg unix IS.PORT.GEN bin.generic lib mkpkg sys bin dev local noao tagsThe file
bin.alpha is a link to the IRAF BIN
directory for the "alpha" architecture (for binary executables), which
probably does not contain anything yet.
Configuring the BIN directories is discussed in section
§2.2.3.
IRAF distribution tapes consist of multiple files separated by tape marks, with a TOC (table of contents) file as the first file on the tape. To find out what is on the tape, rewind it and read out the TOC file as follows (the actual device name will likely be different than that shown in the examples).
% mt -f /dev/nrmt0h rew; cat /dev/nrmt0hThis should cause a TOC file to be listed similar to the following, except for the file names which will vary depending upon what type of distribution you have (the actual file sizes may differ from what is shown). The example below is for a distribution of DUNX/IRAF for the DEC Alpha, including all available binaries. The file sizes are only examples in this case.
0 Table of Contents 1 AS.DUNX.GEN 52.2Mb All sources, includes HSI binaries 2 IB.DUNX.ALP 30.3Mb IRAF binaries (core system, DU4 compilers) 3 NB.DUNX.ALP 18.9Mb NOAO binaries (NOAO packages, DU4 compilers)Here, the first column is the file number on the tape, the TOC file being file zero (the first distribution file is number one), the second column is the name of the tape file, the third column is the file size in megabytes of the uncompressed distribution file (this tells you how much space will be needed to unpack the file on disk), and the last column is a description of the file contents.
There are three types of tape files in the example shown: the AS
file, which is all the IRAF sources (the core IRAF system, NOAO packages,
and the Digital Unix host system interface), the IB files, or IRAF core
system binaries, one for each architecture, and the NB files, or
NOAO package binaries. The NOAO package sources are included in the
AS file since most people requesting IRAF are expected to want the
astronomical reduction software, although IRAF can be configured without
this if desired. All of the file objects are UNIX tar format files,
with the exception of the TOC file which is a simple text file. The
distribution files may be compressed if this was necessary to fit all the
files on a tape.
In the above example, the DUNX in the file names indicates that
these files are for a DEC Alpha running Digital Unix. A DEC Ultrix
distribution is indicated by a DSUX in the file names, a Sun Solaris
distribution by SSOL, an IBM AIX distribution by AIX3, and
so on. In principle a given distribution tape may contain any combination
of these files.
The V2.11 DUNX/IRAF distribution for the DEC Alpha supports a single architecture alpha, which is for DEC's 64 bit Alpha processor. The alpha binaries were generated with the DEC compiler V4.1-6 on a Digital Unix V4.0 system.
The following commands would suffice to restore the main IRAF system to disk, given the distribution tape described by the TOC file in our example above. Once again, the tape device file and possibly the block size will likely have to be changed to whatever is needed for the actual tape device used.
% whoami iraf % cd $iraf % mt -f /dev/nrmt0h rew; mt -f /dev/nrmt0h fsf 1 % tar -xf /dev/nrmt0hAfter the above tar file read operation, the tape is left positioned to just before the EOF of the file just read, since tar stops reading the file data before reading the physical EOF. Hence, an mt fsf will be required to position to the next file on the tape. Any combination of fsf (forward skip file) or bsf (backward skip file) operations may be used to position to a file on a 9 track tape. On some tape drives, it is safest to plan things so that only forward file skips are used, using a rewind and forward skip if it is necessary to position to an earlier file on the tape.
Once the main system, containing only sources, is installed it is possible to create one or more empty BIN directories for the executables, then compile and link the full system. More commonly one will merely read the precompiled executables off the distribution tape, as we discuss in the next section.
AS (all-sources) directory tree, but the BIN directory for each
desired architecture. The IRAF core system and the NOAO packages have
separate BIN directories.The BIN directories for the IRAF core system or a layered package (such as NOAO) are located, logically or physically, in the root directory of the IRAF core system or layered package. Every layered package has its own set of BIN directories. In the distributed V2.11 system you will find the following BIN files (directories or symbolic links) at the IRAF root.
link bin -> bin.generic directory bin.generic link bin.alpha -> ../irafbin/bin.alpha link noao/bin.alpha -> ../../irafbin/noao.bin.alphaIf the IRAF directory structure is set up as described in §2.1.2, with $iraf located at /iraf/iraf and the BIN directories stored in /iraf/irafbin, then these links will not have to be modified. If a different directory structure is used you will have to modify the links accordingly.
The bin link and the bin.generic directory are required for the correct operation of the IRAF system software (mkpkg) and are maintained automatically by the IRAF software management utilities. Under no circumstances should "bin" or "bin.generic" be modified or deleted. It is a very common error to manually delete the bin link and manually set it to bin.alpha or some other architecture (usually after noticing that the library links in lib$ point to "../bin"). The bin.alpha link can be modified as desired but bin and bin.generic should be left alone.
Assume that the bin.alpha directory has been created somewhere, e.g. in the
/iraf/irafbin directory, and that the ib.dunx.alp distribution files
for the core IRAF system VAX binaries have been downloaded from the
network archive. We can restore the alpha binaries with the following
commands.
% cd $iraf/bin.alpha % cat /path/ib.dunx.alp/ib.* | uncompress | tar -xf -Similarly, to restore the NOAO package alpha binaries:
% cd $iraf/noao/bin.alpha % cat /path/nb.dunx.alp/nb.* | uncompress | tar -xf -This process is repeated for each architecture, restoring two BIN directories per architecture. The procedure for restoring a BIN directory from a tape distribution is similar to that described in §2.2.2 for the core system. For example,
% cd $iraf/bin.alpha % mt -f /dev/nrmt0h rew; mt -f /dev/nrmt0h fsf 2 % tar -xf /dev/nrmt0hwould restore the core system bin.alpha directory from tape unit zero containing an uncompressed
ib.dunx.alp as file 2 on the tape.