bash gunzip | untar multiple files in separated folders

Question

I have a list of .tar.gz files with the same inner folder structure and I'd like to batch gunzip | untar a single file from them in separated folders.

logs_2013-08-01.tar.gz
logs_2013-08-02.tar.gz
logs_2013-08-03.tar.gz
logs_2013-08-04.tar.gz
logs_2013-08-05.tar.gz

I know the command to untar a single file is

tar -xvf {tarball.tar} {path/to/file}

And adding the -C to specify the output folder the command for a single archive looks like:

tar -xvf logs_2013-08-01.tar.gz -C 2013-08-01/ /var/logs/audit

But how can I do a loop to untar everything?

score 3 · Answer 1 · answered Aug 22 '13 at 06:30

3

Use atool(1). It is already packaged for many distributions.

Just run:

$ atool -x -e *.tar.gz

to uncompress and untar every file in its own directory.

answered Aug 22 '13 at 06:30

dawud

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I'd like to avoid uncompressing everything due to lack of disk space in the server. – sergei Aug 22 '13 at 06:45
Take a look at `atool`'s manpage, you can extract a single file too. – dawud Aug 22 '13 at 06:47
This was much easier than the above script. But installing atool is one additional step, but that's useful for future purposes as well. – leodotcloud Jul 09 '15 at 01:07

score 3 · Accepted Answer · answered Aug 22 '13 at 07:00

3

You can try this (tested on Linux/bash):

for pkg in logs_*.tar.gz; do
   where="${pkg#logs_}"
   where="${where%.tar.gz}/"

   [ -d "$where" ] || mkdir "$where"

   tar zxfv $pkg -C "$where" /var/logs/audit
done

Simply, you loop over all the tgz archives in the current dircetory, then you take "date" part from its name, create required directory and extract them finally.

answered Aug 22 '13 at 07:00

dsmsk80

5,817
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Just the solution I was asking for. – sergei Aug 22 '13 at 08:02

score 2 · Answer 3 · answered Aug 22 '13 at 06:52

2

You can simply loop over the files like this

#!/bin/bash
# Pass the name of the file to unpack on the command line $1
for file in *.gz
do
    dir=$(echo "$file" | cut -c 6-15)
    tar -xvf "$file" -C "$dir" "$1"
done

answered Aug 22 '13 at 06:52

user9517

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bash gunzip | untar multiple files in separated folders

3 Answers3