Sync all PDB files

first-time.sh

# setting up directories
mkdir pdb && cd pdb && mkdir zipped unzipped && cd zipped
# download all compressed PDB files (this takes a long time!)
wget ftp://ftp.wwpdb.org/pub/pdb/data/structures/all/pdb/*

# unzip all PDB files
cd .. && find . -name "*.gz" | xargs -I{} -n1 bash -c '
src={}; dst=unzipped/${basename ${src%*.gz}}
[ -f $dst ] && echo "skip" || (gzcat -cv $src > $dst)'

update.sh

cd zipped && wget -N ftp://ftp.wwpdb.org/pub/pdb/data/structures/all/pdb/*
cd .. && find . -name "*.gz" | xargs -I{} -n1 bash -c '
src={}; dst=unzipped/${basename ${src%*.gz}}
[ -f $dst ] && echo "skip" || (gzcat -cv $src > $dst)'

https://tianyishi2001.github.io/ox/bioinformatics/download-and-sync-with-the-entire-pdb-database.html