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problem uncompressing tar.gz files
Post 61610 by girlie_admin on Sunday 6th of February 2005 03:40:59 AM
02-06-2005
I actually had the occasion to test these tonight.
tar didn't support the z switch
tar xvzf filename.tar.gz
tar: z: unknown option
Usage: tar {txruc}[vfbFXhiBEelmopwnq[0-7]] [-k size] [tapefile] [blocksize] [exclude-file] [-I include-file] files ...
gunzip without the redirection operator only unzip's the file, pipe to tar didn't seem to work
gunzip filename.tar.gz | tar xvf -
tar: blocksize = 0
Therefore, i stand with my original command line of:
gunzip < filename.tar.gz | tar xvf -
Since it is the only command line that did what I needed.
tar didn't support the z switch
tar xvzf filename.tar.gz
tar: z: unknown option
Usage: tar {txruc}[vfbFXhiBEelmopwnq[0-7]] [-k size] [tapefile] [blocksize] [exclude-file] [-I include-file] files ...
gunzip without the redirection operator only unzip's the file, pipe to tar didn't seem to work
gunzip filename.tar.gz | tar xvf -
tar: blocksize = 0
Therefore, i stand with my original command line of:
gunzip < filename.tar.gz | tar xvf -
Since it is the only command line that did what I needed.
Quote:
Originally Posted by Perderabo
That z flag on tar is not universal. As for using redirect, that's why I do and I'm not gonna switch. See this thread for part of the reason. The other part is that keystrokes are a cheap resource even for a slow typist like me. I often use superfluous parentheses in complex expressions. And in a script, I prefer
variable="string"
over
variable=string
In the same way, "gunzip < file | program" seems more clear than "gunzip file | program" especially if the reader never heard of gunzip. Of course, on the other hand, "gunzip < file" isn't going to fly. Here gunzip needs the old filename to construct the new filename. So rather than blindly adopting one technique or the other, be aware of the issues and make your own choice. There's not really a right or wrong here.
variable="string"
over
variable=string
In the same way, "gunzip < file | program" seems more clear than "gunzip file | program" especially if the reader never heard of gunzip. Of course, on the other hand, "gunzip < file" isn't going to fly. Here gunzip needs the old filename to construct the new filename. So rather than blindly adopting one technique or the other, be aware of the issues and make your own choice. There's not really a right or wrong here.
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LEARN ABOUT MOJAVE
shape_tar
SHAPE_TAR(1) General Commands Manual SHAPE_TAR(1) NAME
shape_tar - shapeTools RMS bundle up subsystem in a tar or shar archive SYNOPSIS
shape tar[VERSIONS=<version_selection_rule>] [ARCHIVE=<filename>] shape shar[VERSIONS=<version_selection_rule>] [ARCHIVE=<filename>] DESCRIPTION
Shape tar and shape shar create a tar or a shar archive containing all source components of the current node in the system tree. All source components listed in the COMPONENTS macro in the Makefile and the release identification file (VERSIONFILE) are written to the archive. Components of subsystems are not included in the archive file. The VERSIONS macro may be set to specify a version selection rule to be active during archive file creation. Default is most_recent, selecting the most recent version of each component. See shape_stdrul(7) or the $(SHAPELIBPATH)/stdrules for other possible settings. You may also use self defined version selection rules as VERSIONS. ARCHIVE is the base name of the file where the output shall be written to. Default is $(SUBSYSTEMNAME). The output file gets the filename extension .tar (resp. .shar). When ARCHIVE=- is given, data will be written to standard output. SEE ALSO
shape_RMS(1), shape_stdrul(7) FILES
$(SUBSYSTEMNAME).tar $(SUBSYSTEMNAME).shar 21.8.119 SHAPE_TAR(1)