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<h1>Tar</h1>
<h2 id="tarbkup">1. Create Backup</h2>
<p>To create a simple compressed tar;</p>
<pre>
$ tar -czvf tar_name.tar.gz /path/to/archive
</pre>
<p>Script
<a href="scripts/backup-system.sh">core/scripts/backup-system.sh</a>
use tldp
<a href="http://tldp.org/LDP/lame/LAME/linux-admin-made-easy/server-backup.html">server backup</a>
and
<a href="http://tldp.org/LDP/lame/LAME/linux-admin-made-easy/server-restore.html">restore</a>
as a reference.</p>
<pre>
#!/bin/sh
echo -n "root directory you want backup (/mnt/): "
read ROOT_DIR
echo -n "where you want to save (/home/user): "
read DEST_DIR
echo -n "backup name (system_name): "
read BCK_NAME
echo $DES_DIR
echo $ROOT_DIR
tar --xattrs -zcpf $DEST_DIR/$BCK_NAME-`date '+%Y-%j-%H-%M-%S'`.tar.gz \
--directory=$ROOT_DIR \
--exclude=usr/ports \
--exclude=usr/src \
--exclude=var/run \
--exclude=var/lock \
--exclude=srv \
--exclude=mnt \
--exclude=home \
--exclude=dev \
--exclude=run \
--exclude=tmp \
--exclude=proc \
--exclude=sys .
</pre>
<h2 id="tarview">2. View content of tar</h2>
<p>List files inside tar;</p>
<pre>
$tar -tvf backup.tar.gz
</pre>
<p>To restore is better to use first t flag and then x,
this prevents any --absolute-paths problem;<p>
<pre>
$ tar -ztvpf full-backup-11-November-2045.tar.gz > file.lst
</pre>
<h2 id="tarextract">3. Extract content from tar</h2>
<p>If you want to extrat to different directory;</p>
<pre>
$ tar xf full-backup-11-November-2045.tar.gz --directory=/mnt
</pre>
<p>If path is fine, extract everything;</p>
<pre>
$ tar --xattrs -xpvf full-backup-11-November-2045.tar.gz
</pre>
<p>Extract just one file;</p>
<pre>
$ tar --extract --file=core.tar.gz libidn#1.32-1.pkg.tar.gz
</pre>
<h2 id="taradd">4. Add content to tar</h2>
<p>Only uncompressed tar can append files without having
to extract and compress again.</p>
<p>First create a tar with all files in the current directory;</p>
<pre>
$ tar cpf core.tar *.tar.gz
</pre>
<p>List files before appending new file and after;</p>
<pre>
$ tar -tvf core.tar
$ tar --append --file=core.tar libidn#1.32-1.pkg.tar.gz
$ tar -tvf core.tar
</pre>
<h2 id="tarrm">5. Remove content of tar</h2>
<pre>
$ tar -tvf core.tar
$ tar --delete --file=core.tar libidn#1.32-1.pkg.tar.gz
$ tar -tvf core.tar
</pre>
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<p>
This is part of the c9-doc Manual.
Copyright (C) 2016
c9 team.
See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a> for copying conditions.</p>
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