msys-recursive-cp

#!/bin/bash
#
# This seems like a really stupid script, but it is a replacement for MSYS's
# wonky and anemic "cp" command; on large recursive copies, it is common
# to get errors about "will not create hard link `foo' to directory `bar'",
# when foo and bar aren't even related. Mook gave the idea that using tar
# for large copies like this is a workaround that proves to be reliable.
#
# It still makes me cry, though.
#

SRCDIR="$1"
DESTDIR="$2"
SRCTARARGS="$3"
DESTTARARGS="$4"

MKDIR=${MKDIR:=mkdir -p}
TAR=${TAR:=tar}

if test -z "$SRCDIR"; then
   echo Source directory missing
   echo $0 [source dir] [dest dir] [src tar cmd args] [dest tar cmd args]
   exit 1
fi

if test -z "$DESTDIR"; then
   echo Destination directory missing
   echo $0 [source dir] [dest dir] [src tar cmd args] [dest tar cmd args]
   exit 1
fi

if ! test -d "$DESTDIR"; then
   echo Creating $DESTDIR...
   $MKDIR "$DESTDIR"
fi

echo Running $TAR c $SRCTARARGS -C "$SRCDIR" . \| $TAR x $DESTTARARGS -C "$DESTDIR"
$TAR c $SRCTARARGS -C "$SRCDIR" . | $TAR x $DESTTARARGS -C "$DESTDIR"