/*
 * grab.c
 *
 * Name:        grab
 * Purpose:     extract files from remote filesystems
 * Usage:       grab [-2468pxvilLtb#] <filesystem> <files...>
 * Environment: V6 or V7 (2.9BSD, 4.1BSD) Unix or Venix/86
 * Compile:     cc -O -s -D<type> grab.c find.c readi.c bread.c tmode.c -o grab
 * Date:        4/29/82
 * Author:      Donn Seeley RRCF UCSD
 * Remarks:
 *      This is meant to be used with dual-ported disks or controllers
 *      when it is either impossible or undesirable to mount another
 *      file system on that medium.  It should allow any Version 6 or
 *      Version 7 (2.9BSD, 4.1BSD) system to read filesystems from any
 *      Version 6 or Version 7 (2.9BSD, 4.1BSD) system even if the systems
 *      are not of the same type.  Version 6 systems will need at least
 *      a Phototypesetter level C compiler to make "grab".  "Grab" will
 *      copy any conceivable (?) object on a filesystem including directories
 *      (recursively), links, file holes, setuid/setgid/sticky files and
 *      device nodes.  "Grab" tries to prevent unauthorized readers from
 *      gazing at remote files but the only reliable way of maintaining
 *      security is to make "grab" setgid and then make fs's readable by
 *      group and not by other.  ("Df" should work this way too.)
 *
 *      To compile a V6 grab, define PDPV6.  To compile a 2.9 grab define
 *      PDP, and to compile a 4.1 grab define VAX.  If your machine has
 *      multiplexed files, define MPXFILES, and if it has symbolic links
 *      you should define SYMLINKS.  Define VENIX for VENIX/86.
 *
 *      Options:
 *              -2468   2.9, 4.1, V6, or VENIX/86 system on the remote end.
 *              -p      Preserve all permissions and ownerships, instead of
 *                      just some of them (should be su).
 *              -x      Act like "cat(1)" from the remote fs (but still
 *                      recursively on directories).
 *              -v      Verbose mode: print filenames as they are copied.
 *              -i      The arguments are inode numbers; treat them as
 *                      files with those inode numbers and named by the numbers.
 *              -l      Act like a rudimentary "ls(1)" on a remote fs.
 *              -L      Long version of -l: gives a gruesome inode dump.
 *              -t      Act like "tar(1)" on a remote fs.  Output goes to
 *                      the standard output.  Digits following the "t" are
 *                      interpreted as a blocksize.
 *              -b      Set blocksize independently: this manipulates the
 *                      internal write buffer size.  Digits following, etc.
 *
 *---------------------------------------------------------------------------
 *
 * $Header:   RCS/grab.c.v  Revision 1.2  83/07/01  19:29:13  donn  Exp$
 * $Log:        RCS/grab.c.v $
 * Revision 1.2  83/07/01  19:29:13  donn
 * Added -i and -L flags for inode grabbing and inode dumping.
 *                                                      Donn
 * 
 */