INES 3.0 Data Retrieval Description

INES retrieval: file decompression and extraction

Uncompressing a packed tar file

If you choose gzip, bzip2 or compress compression when downloading, you must restore the compressed, packed file. Note that the following instructions assume you are using a Unix or Linux system, and that you named the local save file using the standard naming conventions for such files, namely:

Compression Filename Unix Command

gzip file.tar.gz gunzip file.tar

bzip2 file.tar.bz2 bunzip2 file.tar.bz2

compress file.tar.Z uncompress file.tar

Compression	Filename	Unix Command
gzip	file.tar.gz	gunzip file.tar
bzip2	file.tar.bz2	bunzip2 file.tar.bz2
compress	file.tar.Z	uncompress file.tar

Extracting files from a packed tar file

You should consult your local system documentation regarding how to unpack a tar file.

For Unix systems use the

tar

command.

For VMS systems, use the


      tar2VMS

utility.

Before extracting any

tar

file first check it to see which files are included and where they will be unloaded. The following examples are valid for Unix systems:

Check the files in a tar file:

tar tf file.tar

Extract the files from a tar file in verbose mode:

tar xvf file.tar

Note: If the listing includes a directory structure, the later example may create sub-directories in the current directory. Typically, a directory with the program-id name will be created.

Extracting files from a packed ZIP file

ZIP is a compression/archive program; the unzip program will list, test, or extract files from a ZIP archive. The default behavior is to extract into the current directory (and subdirectories below it) all files from the specified ZIP archive. The following commands may be useful on a Unix system:

Test a ZIP archive file:

unzip -t file

List the contents of a ZIP archive file:

unzip -l file

Extract the contents of a ZIP archive file:

unzip file

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Last update: May 10, 1999.