Repatch (from linux) of OSX IRAF

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+.help rmbin Feb86 "softools"
+.ih
+NAME
+rmbin -- find/remove binary files in subdirectories
+.ih
+USAGE
+rmbin [-dinrv] [-o extns] [-e extns] dir1 dir2 ... dirN
+.ih
+PARAMETERS
+.ls 4 -d
+Disable recursive descent into subdirectories.
+.le
+.ls 4 -e extns
+Exclude files with the listed extensions (whitespace delimited).
+.le
+.ls 4 -i
+Verify before deleting files without extensions.  Files with well known
+extensions like ".[aoe]" are deleted without a query.  A heuristic (ZFACSS)
+is used to determine the filetype of files with unknown extensions, and
+it can fail, though in practice it works quite well.
+.le
+.ls 4 -n
+No execute; do not delete files.  This option may be used to generate
+a list of binary files for some purpose other than deletion.  For example,
+on a UNIX host, the following command will compute the disk space used
+by the binary files in a directory tree:
+
+	% du `rmbin -n .`
+
+The -n option, of course, is also useful for verifying the delete operation
+before destroying the files.
+.le
+.ls 4 -o extns
+Delete only files with the listed extensions (whitespace delimited).
+.le
+.ls 4 -r
+Reenable recursive descent.  Recursive descent is the default, however
+it may be turned off at one point in the command line, and later reenabled
+with this switch.
+.le
+.ls 4 -v
+Print names of files as they are deleted.
+.le
+
+Note that flags may be inserted between directory name arguments to change
+switches for different directories.
+.ih
+DESCRIPTION
+The \fIrmbin\fR task is used to descend a directory tree, deleting (or listing)
+all the binary files therein.  The task may also be used to delete or list
+nonbinary files by explicitly listing their extensions.
+
+\fIRmbin\fR is used the strip the IRAF system down to the sources, prior to
+a full system rebuild.  After changing to the IRAF root directory, one runs
+\fIrmbin\fR to delete all the binaries in lib, sys, pkg, etc. (but \fInot\fR
+in hlib, else a bootstrap will be necessary too).  \fIMkpkg\fR is then run
+to recompile the system; this currently takes about 20 hours on our UNIX
+11/750 development system, provided nothing else is running on the system.
+.ih
+EXAMPLES
+1. Delete all binaries in the pkg and sys directories of IRAF.  The example
+is for a UNIX host, but this works for all other IRAF hosts as well.
+
+.nf
+	% cd $iraf
+	% rmbin -v pkg sys
+.fi
+.ih
+SEE ALSO
+rtar, wtar, mkpkg