tar-split/cmd/tar-split/README.md

tar-split utility

Installation

go get -u github.com/vbatts/tar-split/cmd/tar-split

Usage

Disassembly

$ sha256sum archive.tar 
d734a748db93ec873392470510b8a1c88929abd8fae2540dc43d5b26f7537868  archive.tar
$ mkdir ./x
$ tar-split disasm --output tar-data.json.gz ./archive.tar | tar -C ./x -x
time="2015-07-20T15:45:04-04:00" level=info msg="created tar-data.json.gz from ./archive.tar (read 204800 bytes)"

Assembly

$ tar-split asm --output new.tar --input ./tar-data.json.gz  --path ./x/
INFO[0000] created new.tar from ./x/ and ./tar-data.json.gz (wrote 204800 bytes)
$ sha256sum new.tar 
d734a748db93ec873392470510b8a1c88929abd8fae2540dc43d5b26f7537868  new.tar

Estimating metadata size

$ tar-split checksize ./archive.tar
inspecting "./archive.tar" (size 200k)
 -- number of files: 28
 -- size of metadata uncompressed: 28k
 -- size of gzip compressed metadata: 1k