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|
#! /bin/bash
set -e
src=$1
dst=$2
# Copy tree $src to tree $dst
if test -z "$src" || test -z "$dst" || test "$src" = "$dst"; then
echo "Usage: $0 <src> <dst>"
exit 1
fi
if test -f $src; then
# Both $src and $dst must be files.
test -f $dst || ! test -e $dst || exit 3
# Copy file if it differs
srcfile=$src
dstfile=$dst
if cmp -s $srcfile $dstfile; then
: # unchanged; do nothing
else
echo cp $srcfile
cp $srcfile $dstfile
fi
fi
if test -d $src; then
# 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.
test -e $dst || mkdir -p $dst
test -d $dst || exit 3
# find inode number to identify the src directory later on
srcinode=$(ls -id $src | awk '{print $1}')
# 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 . \( -name 'CVS' -o -name '.svn' -o -name '.git' -o -name '.hg' -o -name '_darcs' -o -inum $srcinode \) -prune -o -type d -print); 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 . \( -name 'CVS' -o -name '.svn' -o -name '.git' -o -name '.hg' -o -name '_darcs' -o -inum $srcinode \) -prune -o -type f -print); do
srcfile=$src/$file
dstfile=$dst/$file
if test -e $srcfile; then
: # file exists; do nothing
else
echo rm $dstfile
rm $dstfile
fi
done
fi
|
