help with a bash script please

help with a bash script please

[Gregory Nowak]

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Hi all.

I'm having trouble with an if statement in a bash script I'm
writing. What I want to do, is to check if a file doesn't have read
permission. What I'm doing is:

if !([ -r filename])

However, bash says that the command [-r is not found on line
number. Can someone please tell me what I'm doing wrong, and show me
how to do what I want to do properly? Thanks in advance.

Greg


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Re: help with a bash script please

[Raul A. Gallegos]

Gregory Nowak said the following on Sat, Apr 08, 2006 at 03:16:56PM -0700:
> I'm having trouble with an if statement in a bash script I'm
> writing. What I want to do, is to check if a file doesn't have read
> permission. What I'm doing is:
> 
> if !([ -r filename])


Try this:

if [ ! -r filename ]; then

That should work. I tried this on a file called test with chmod 000 
then chmod 666 and on 000 the script was true due to the exclamation 
but false when the file was chmod 666 since the script then made it 
false.

The quick script I wrote is as follows:

#!/bin/bash

if [ ! -r test ]; then
echo "this file is not readable"
else
echo "this file is readable"
fi

HTH.

-- 
All I want is a warm bed and a kind word and unlimited power.
		-- Ashleigh Brilliant
Raul A. Gallegos ... IliwSsmc

Re: help with a bash script please

[Garrett Klein]

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Greg,

	What you're looking for is
if [ !-r filename ]; then
#commands here;
fi

HTH,
Garrett

On Sat, Apr 08, 2006 at 03:16:56PM -0700, Gregory Nowak wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Hi all.
> 
> I'm having trouble with an if statement in a bash script I'm
> writing. What I want to do, is to check if a file doesn't have read
> permission. What I'm doing is:
> 
> if !([ -r filename])
> 
> However, bash says that the command [-r is not found on line
> number. Can someone please tell me what I'm doing wrong, and show me
> how to do what I want to do properly? Thanks in advance.
> 
> Greg
> 
> 
> - -- 
> web site: http://www.romuald.net.eu.org
> gpg public key: http://www.romuald.net.eu.org/pubkey.asc
> skype: gregn1
> (authorization required, add me to your contacts list first)
> 
> - --
> Free domains: http://www.eu.org/ or mail dns-manager@EU.org
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> 
> iD8DBQFEODZY7s9z/XlyUyARAgVJAKCyow1QR5lo7DjsNxUfAavCO86gFQCgmC+i
> S58rlWJzeICulyaj9sKfono=
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Re: help with a bash script please

[Lorenzo Taylor]

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Remove the parentheses and move the ! into the brackets.

if [ ! -r filename ]

HTH,
Lorenzo
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A:	Trustworthy.
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Re: help with a bash script please

[Tyler Littlefield]

I am not the best, and haven't looked at bash, but try moving the ! to the 
inside of the parens.
Thanks,
----- Original Message ----- 
From: "Gregory Nowak" <greg@romuald.net.eu.org>
To: <speakup@braille.uwo.ca>
Sent: Saturday, April 08, 2006 4:16 PM
Subject: help with a bash script please


> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hi all.
>
> I'm having trouble with an if statement in a bash script I'm
> writing. What I want to do, is to check if a file doesn't have read
> permission. What I'm doing is:
>
> if !([ -r filename])
>
> However, bash says that the command [-r is not found on line
> number. Can someone please tell me what I'm doing wrong, and show me
> how to do what I want to do properly? Thanks in advance.
>
> Greg
>
>
> - -- 
> web site: http://www.romuald.net.eu.org
> gpg public key: http://www.romuald.net.eu.org/pubkey.asc
> skype: gregn1
> (authorization required, add me to your contacts list first)
>
> - --
> Free domains: http://www.eu.org/ or mail dns-manager@EU.org
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.2.2 (GNU/Linux)
>
> iD8DBQFEODZY7s9z/XlyUyARAgVJAKCyow1QR5lo7DjsNxUfAavCO86gFQCgmC+i
> S58rlWJzeICulyaj9sKfono=
> =QG4s
> -----END PGP SIGNATURE-----
>
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
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