{{tag>Brouillon}}

= Notes compression

**pigz/unpigz** remplace **gzip**

7z 7zip PeaZip

lzop, lz4 pour la rapidité (similaire à gzip)

xz / pxz pour la compression

pbzip2

rsync => voir ''gzip --rsyncable''


''ppack_lz.sh''
<code bash>
#!/bin/sh

PARALLEL="$(nproc --ignore=1)"

EXT="${0##*_}"

case "$EXT" in
     bz2) CMD='bzip2 -9'                              ;;
     gz)  CMD='gzip -9'                               ;;
     lz)  CMD='lzip -9'                               ;;
     xz)  CMD='xz -9e'                                ;;
     zst) CMD='zstd --rm --single-thread --ultra -22' ;;
esac


if [ -z "$1" ]
then echo "Specify files to pack into ${EXT} files."
else for x
     do printf '%s\0' "$x"
     done | nice xargs -0 -L 1 -P "$PARALLEL" $CMD
fi
</code>
Source : https://www.linuxjournal.com/content/parallel-shells-xargs-utilize-all-your-cpu-cores-unix-and-windows