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|
#! /bin/bash
src=$1
dst=$2
# Copy tree $src to tree $dst
# Both $src and $dst must be directories. $dst is created if it does
# not exist
# All files in the source tree are checked; if they already exist in
# the destination tree and are identical, they are ignored, otherwise
# they are copied. Missing directories are created.
# All files in the destination tree are checked; if they do not exist
# in the source tree, they are deleted.
if test -z "$src" || test -z "$dst" || test "$src" = "$dst"; then
echo "Usage: $0 <src> <dst>"
exit 1
fi
test -d $src || exit 2
test -e $dst || mkdir -p $dst
test -d $dst || exit 3
# Create all directories
for dir in $(cd $src && find . -type d); do
dstdir=$dst/$dir
if test -d $dstdir; then
: # directory exists; do nothing
else
echo mkdir $dstdir
mkdir -p $dstdir
fi
done
# Delete directories which do not exist
for dir in $(cd $dst && find . -type d); do
srcdir=$src/$dir
dstdir=$dst/$dir
if test -d $srcdir; then
: # directory exists; do nothing
else
echo rm -rf $dstdir
#rm -rf $dstdir
fi
done
# Copy files that differ
for file in $(cd $src && find . -type f); do
srcfile=$src/$file
dstfile=$dst/$file
if cmp -s $srcfile $dstfile; then
: # unchanged; do nothing
else
echo cp $srcfile
cp $srcfile $dstfile
fi
done
# Delete files which do not exist
for file in $(cd $dst && find . -type f); do
srcfile=$src/$file
dstfile=$dst/$file
if test -e $srcfile; then
: # file exists; do nothing
else
echo rm $dstfile
rm $dstfile
fi
done
|
