AIX

Hi guys,

This is my 1st post here. I tried to Google around but failed to get my solution. So I hope you guys could help me. (I have just a basic unix background for 2years so I'm sorry if im asking stupid questions)

OS - Aix 6.1, 64 bits.
Server - currently I only have telnet access to a Aix machine. ( I don't have SSH access)
The problem - I can't seem to extract or gunzip a .tgz file.

Error 1 ->
# gunzip install.tgz

gunzip: install.tgz: invalid compressed data--crc error

gunzip: install.tgz: invalid compressed data--length error

Error 2 -:>
I also tried to extract an apache file for aix.

# tar -xvf apache-2.2.14_openssl-0.9.8k_modjk-1.2.26_aix53.tar.gz
tar: 0511-169 A directory checksum error on media; 0 not equal to 63252.

Investigations(might help to identify the problem) -

1) Some say its because when I ftp it may transfer as an ACSII file. So i tried typing binary when I ftp to the AIX machine. It showed type set to I. So I just ftp the .tgz file that I want to my AIX machine. So when I tried to gunzip, same thing happened.

my method of transferring file -> I used WinSCP to download the file from a server to my local machine > then from my local machine I ftp to the remote aix machine.

2) gunzip installed in AIX? i tried the gunzip -V
# gunzip -V
gunzip 1.2.4 (18 Aug 93)
Compilation options:
DIRENT UTIME STDC_HEADERS HAVE_UNISTD_H

but on another machine the with the same version, I could successfully gunzip it.

3) is it because the .gzip was compiled in non aix? but the installer.tgz (the file that im trying to unzip) initially supports all OS. I tried in RHEL was fine, in windows2k8 was fine also.

4) I tried checking the file size with the one i transferred to other servers, and it is the same. (FTP takes so long)

Any ideas? please advice? would it be like a binary or library missing? Any suggestions?

cheers
pilotHans

I have looked at the AIX 6.1 tar command and it appears that the .tgz format is not supported. The Linux tar command has a flag (-z lower case) which is not supported by AIX. The entry from the Linux site is as follows:

To uncompress bob.tgz, tar zxvf bob.tgz - If a folder was compressed originally, then the original folder will be created. If not, then the files will be placed in the current directory.

I hope this helps.

Thanks for the quick response!

1) okay, your saying that I have to find another installer that had been compressed in an AIX environment ant not in a .tgz format?

2) the weird thing is, I tried gunzip installer.tgz in another machine which is also AIX and it works. However when I try to > copy it to my local machine - success > ftp to my aix machine, it failed

+ btw, the method that I'm telnet to the AIX6.1 machine (64) is via putty.

did you use the binary mode to copy the files over ftp?

use cksum command on both aix machines, if the value is different you screwed it up with ftp

This won't work, because tar can only work on tar-files, not on gz-files. A ".tar.gz" file is a file in tar-format, which was packed into a ".gz."-file. (Think of it like a package wrapped into another package.) To unpack it, you have to unwrap one level after the other:

Code:

gzip -cd <file.tar.gz> | tar -xf -

gzip is asked to decompress (unpack) the file ("-d") and to send the result to <stdout> ("-c"), into a pipeline. At the end of the pipeline tar receives this file ("-f -") from <stdin> and further unpacks it ("-x").

There are two possible places where something might have gone wrong: when you transferred the file to your local system from the internet and when you transferred it from there with ftp. You made sure the second step is correct by using "bin" inside ftp, but maybe this error occurred in the first step. Download again from the internet and make sure you use "binary" there too when you do so.

You should be able to unpack the files correctly, even if you cannot run the unpacked executable. The tar-format and the gzip-format are both universal and the file(s) should unpack without problems. To *run* the resulting files is a different matter, of course. You will need *binaries* for your system, even if some shell-scripts(?) for installation purposes might be able to run on your architecture.

I hope this helps.

bakunin

extract the tar archive in Linux or windows Box and copy it to AIX :-) very simple

Thanks guys for replying.

okay,

Code:

from my aix6.1
# cksum install.tgz
2945023227 28246184 install.tgz

from my server where i took the file
% cksum install.tgz
229238057 28246615 install.tgz