topic Re: uncompress default in Operating System - HP-UX

uncompress default

Kurtkarl — Mon, 17 Jun 2002 15:45:05 GMT

Hi,

We are running "uncompress ??? within a script. Once uncompress runs and if it finds existing file it prompts you whether to override it or not?

My question is, are there any parameters that we could use for uncompress not to prompt in case same file found and instead automatically "DONT" override existing files? or are there any scripts to use uncompress by defaulting the prompt to "N" if file exists?

THanks
Joey

Re: uncompress default

Rodney Hills — Mon, 17 Jun 2002 15:49:41 GMT

Two choices-

1) remove the orginal file it is being uncompressed into first, before uncompress.

2) the "-f" option on uncompress will force it to overwrite the file.

-- Rod Hills

Re: uncompress default

Rodney Hills — Mon, 17 Jun 2002 15:51:47 GMT

oops- I miss read your question.

Best thing to do is in the script do an "if" statement to test before uncompressing.

if [ ! -e yourfile ] ; then
uncompress yourfile.Z
fi

-- Rod Hills

Re: uncompress default

Justo Exposito — Mon, 17 Jun 2002 15:53:10 GMT

Hi Joey,

You can check if the file exist first, somthing like that:

if [ -f filename ]
then
echo "the file allready exists then not overrider"
else
uncompress filename
fi

Hope this helps,

Justo.

Re: uncompress default

MANOJ SRIVASTAVA — Mon, 17 Jun 2002 16:06:57 GMT

Hi Joey

use -f option .

ie uncompress -f it will not ask you to overwrite the file even if the same file exists.

All the best

Manoj Srivastava

Re: uncompress default

Kurtkarl — Mon, 17 Jun 2002 16:07:31 GMT

Thanks for the reply, My other question is, what if
if we have to many files to test and we dont want to do several loops within the script just to test the file if existing or not?

Can we let uncompress program to do these test and just default it not to override existing files?

Thanks again
Joey

Re: uncompress default

Martin Johnson — Mon, 17 Jun 2002 16:09:38 GMT

To answer your question, no, there are no parameters/qualifiers for uncompress that will give you the behavior you are looking for. You will have to use one of the scripting procedures already posted to your question. (They are valid solutions and deserve more than a "4".)

Marty

Re: uncompress default

Rodney Hills — Mon, 17 Jun 2002 16:10:07 GMT

To put it simply-

NO

The man page for uncompress gives no indication that this is available.

I assume you are doing something like a uncompress *.Z and only new files to be uncompressed. A shell script really would not be that ineffecient.

-- Rod Hills

Re: uncompress default

Justo Exposito — Mon, 17 Jun 2002 16:12:36 GMT

Hi Again,

No there is not a parameter into uncompress.

See man page.

Regards,

Justo.

Re: uncompress default

Rodney Hills — Mon, 17 Jun 2002 16:16:07 GMT

I did a test and an undocumented way is as follows-

uncompress *.Z &0

With STDERR set to null, uncompress can't do a prompt, so it defaults to no.

-- Rod Hills

Re: uncompress default

MANOJ SRIVASTAVA — Mon, 17 Jun 2002 16:18:49 GMT

Joey

I think there is no option , the better way would be to move it to some toher direcotry and then uncompress it.

Manoj Srivastava

Re: uncompress default

harry d brown jr — Mon, 17 Jun 2002 16:21:51 GMT

Joey,

If you want multiple behaviors, then you are going to have to write a script to test if the file exists or not.

live free or die
harry

Re: uncompress default

Rodney Hills — Mon, 17 Jun 2002 16:25:20 GMT

You of course know that any suggestion given by these forums are not guaranteed and any damage to your system is not the responsibility of the provider of a solution.

I don't forsee any problems with my solution, but then again you are trying to do something a little "non-standard".

my 2 cents

-- Rod Hills

Re: uncompress default

Kurtkarl — Mon, 17 Jun 2002 16:34:48 GMT

Thanks for all of your replies. Really appreciate it. Rodney Hills reply works for us.. Thanks Rodney..

Again thanks
Joey