haley@unmvax.cs.unm.edu (Timothy P. Haley) (01/05/91)
We have an RS2030 running Risc/OS 4.51. We seem to be having trouble using wildcards when extracting from tar archives. For example we have an archive file called stuff which has a bunch of files stored in it with names of the form *.in along with *.logs and other files. I wanted to extract only the .in files. So I typed .... tar -xvf stuff "*.in" Tar thought about it for a short time and then gave me my prompt back. It didnt find any of the .in's. So heres the question: Is this not the correct way to look for files in the tar file using wildcards? [If you dont quote the *.in the shell will try to expand it] Or is this a bug or is wildcard matching like this not supported by tar. Thanx, Tim Tim Haley haley@unmvax.cs.unm.edu Part Time Grad Student Full Time Worker Bee at Ball Systems Sometimes confused.
mek@enterprise.udev.cdc.com (Mark Kennedy) (01/06/91)
In article <1991Jan4.165328.21000@unmvax.cs.unm.edu>, haley@unmvax.cs.unm.edu (Timothy P. Haley) writes: |> We have an RS2030 running Risc/OS 4.51. We seem to be having trouble |> using wildcards when extracting from tar archives. For example |> we have an archive file called stuff which has a bunch of files stored |> in it with names of the form *.in along with *.logs and other files. |> I wanted to extract only the .in files. So I typed .... |> |> tar -xvf stuff "*.in" |> |> Tar thought about it for a short time and then gave me my prompt back. |> It didnt find any of the .in's. So heres the question: Is this not the |> correct way to look for files in the tar file using wildcards? [If you dont |> quote the *.in the shell will try to expand it] Or is this a bug or is |> wildcard matching like this not supported by tar. |> Wildcard pattern matching is not supported by the tar command. This is not unique to Risc/OS, I have observed the same thing on SunOS 4.1. There is a way around this however: tar xvf stuff `tar tf stuff|grep ".*in"` This command will first list the table of contents of your tarfile, and grep for only the files you are interested in. Then a second tar is executed which extracts what the first command returned. Kludgy, maybe, but effective. If you have lots of big files, you may want to create your tarfiles such that all related files are in separate tarfile archives then this workaround will be unnecessary. -Mark Mark Kennedy AT&T: (612) 482-2787 Control Data Corporation E-Mail: mek@udev.cdc.com "Abandon all hope, ye who press enter here."