Linux/Compression tools: Difference between revisions
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== tar == | |||
* create .tar.gz | |||
<pre> | |||
tar -czvf file.tar.gz directory # pack directory | |||
# (c):create (z):gzip (v):verbose (f):file | |||
tar -czf file.tar.gz -C /var/www . # remove parent directory path | |||
</pre> | |||
* list contents | |||
<pre> | |||
tar -ztvf my-data.tar.gz # (z):gzip (t):list (v):verbose (f):file | |||
</pre> | |||
* extract (untar) | |||
<pre> | |||
tar -xvf archive.tar.gz # (x):extract (v):verbose (f):file | |||
</pre> | |||
== benchmark == | == benchmark == | ||
* Compressing 6144MB kvm image | * Compressing 6144MB kvm image (RAW, 2,7GB used) | ||
{| class="wikitable sortable" border="1" | {| class="wikitable sortable" border="1" | ||
| Line 8: | Line 27: | ||
! compressed size [MB] | ! compressed size [MB] | ||
! time [s] | ! time [s] | ||
! additional size [MB] | |||
|- | |- | ||
| pigz | | pigz | ||
| Line 18: | Line 33: | ||
| 1526 | | 1526 | ||
| 259.65 | | 259.65 | ||
| 533 | |||
|- | |- | ||
| pigz | | pigz | ||
| Line 23: | Line 39: | ||
| 1667 | | 1667 | ||
| 28.06 | | 28.06 | ||
| 674 | |||
|- | |||
| cat | |||
| > target | |||
| 6144 | |||
| 60.80 | |||
|- | |||
| copy | |||
| | |||
| 6144 | |||
| 59.36 | |||
|- | |||
| 7z | |||
| a -t7z -mx1 -si | |||
| 1333 | |||
| 359.66 | |||
| 340 | |||
|- | |||
| 7z | |||
| a -t7z -mx9 -si | |||
| 993 | |||
| 1360.15 | |||
| 0 | |||
|- | |||
| 7z | |||
| a -m0=lzma2 -si | |||
| 1137 | |||
| 551.40 | |||
| 144 | |||
|- | |||
| 7z | |||
| a -m0=lzma2 -mx9 -si | |||
| 1006 | |||
| 788.00 | |||
| 13 | |||
|} | |} | ||
| Line 40: | Line 96: | ||
</pre> | </pre> | ||
</blockquote> | </blockquote> | ||
[[Category:Linux/CL-Tools]] | |||
[[Category:Linux]] | |||
Latest revision as of 20:11, 21 August 2024
tar
- create .tar.gz
tar -czvf file.tar.gz directory # pack directory
# (c):create (z):gzip (v):verbose (f):file
tar -czf file.tar.gz -C /var/www . # remove parent directory path
- list contents
tar -ztvf my-data.tar.gz # (z):gzip (t):list (v):verbose (f):file
- extract (untar)
tar -xvf archive.tar.gz # (x):extract (v):verbose (f):file
benchmark
- Compressing 6144MB kvm image (RAW, 2,7GB used)
| Command | Arguments | compressed size [MB] | time [s] | additional size [MB] |
|---|---|---|---|---|
| pigz | --best | 1526 | 259.65 | 533 |
| pigz | --fast | 1667 | 28.06 | 674 |
| cat | > target | 6144 | 60.80 | |
| copy | 6144 | 59.36 | ||
| 7z | a -t7z -mx1 -si | 1333 | 359.66 | 340 |
| 7z | a -t7z -mx9 -si | 993 | 1360.15 | 0 |
| 7z | a -m0=lzma2 -si | 1137 | 551.40 | 144 |
| 7z | a -m0=lzma2 -mx9 -si | 1006 | 788.00 | 13 |
- benchmark script
#!/bin/bash COMPRESSCMD="pigz -9" DESC="pigz-best" START=$(date +%s.%N) cat image.img | $COMPRESSCMD > /backup/$DESC.img.gz END=$(date +%s.%N) DIFF=$(echo "$END - $START" | bc) echo "$DIFF" > /backup/$DESC.log