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Top Forums Shell Programming and Scripting Combining tar and gzip errors on AIX system. Post 303045383 by mohtashims on Thursday 19th of March 2020 05:43:09 AM
Combining tar and gzip errors on AIX system.

The below tar of folder 1043 command works fine on AiX system.

tar -X ./exclude.txt -cvf /backup/App_Bckup.tar ./1043 | tee /tmp/tar.out
gzip /backup/App_Bckup.tar ./1043

I wanted to combine the tar and gzip as a single command .. reason bieng the tar ball creation forst and then the gz file creation would force the disk space to run out.

Below is the combine command.

tar -X ./exclude.txt -cvf /backup/App_Bckup.tar ./10203| gzip >/backup/App_Bckup.tar.gz

However, i get the below error:

tar: ./1043/B2KCOMP/b2kcomp/15002S10485964.70600 could not be archived
tar: ./1043/B2KCOMP/b2kcomp/15002S10879272.70598 could not be archived
tar: ./1043/B2KCOMP/b2kcomp/15002S11076030.70600 could not be archived
tar: ./1043/B2KCOMP/b2kcomp/15002S11600848.70600 could not be archived
and so on ....

When i check all the files that error they have 's' in the file permission as seen below:

ls -ltr ./1043/B2KCOMP/b2kcomp/15002S10485964.70600
srwxrwxrwx    1 user1   dba               0 Feb 15 18:13 ./1043/B2KCOMP/b2kcomp/15002S10485964.70 600

If i grep for "15002S10485964" in the successful tar command's output i dont find any entry.

grep 15002S10485964 /tmp/tar.out

No results found.


tar -tvf /backup/App_Bckup.tar | grep 15002S10485964
No results found.

Can you please suggest if and how can I combine the tar and gzip and avoid the error
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chroot(1M)						  System Administration Commands						chroot(1M)

chroot - change root directory for a command SYNOPSIS
/usr/sbin/chroot newroot command DESCRIPTION
The chroot utility causes command to be executed relative to newroot. The meaning of any initial slashes (/) in the path names is changed to newroot for command and any of its child processes. Upon execution, the initial working directory is newroot. Notice that redirecting the output of command to a file, chroot newroot command >x will create the file x relative to the original root of command, not the new one. The new root path name is always relative to the current root. Even if a chroot is currently in effect, the newroot argument is relative to the current root of the running process. This command can be run only by the super-user. RETURN VALUES
The exit status of chroot is the return value of command. EXAMPLES
Example 1 Using the chroot Utility The chroot utility provides an easy way to extract tar files (see tar(1)) written with absolute filenames to a different location. It is necessary to copy the shared libraries used by tar (see ldd(1)) to the newroot filesystem. example# mkdir /tmp/lib; cd /lib example# cp /tmp/lib example# cp /usr/bin/tar /tmp example# dd if=/dev/rmt/0 | chroot /tmp tar xvf - ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
cd(1), tar(1), chroot(2), ttyname(3C), attributes(5) NOTES
Exercise extreme caution when referencing device files in the new root file system. References by routines such as ttyname(3C) to stdin, stdout, and stderr will find that the device associated with the file descriptor is unknown after chroot is run. SunOS 5.11 15 Dec 2003 chroot(1M)

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