Re: basic bash help
From: Radoulov, Dimitre <cichomitiko_at_gmail.com>
Date: Fri, 27 May 2011 21:26:54 +0200
Message-ID: <4DDFFAFE.8030501_at_gmail.com>
On 27/05/2011 20:42, Stephens, Chris wrote:
>
> I'm writing a script to allow the sysadmin's to kill any active
> sessions for a particular database user.
>
> If the script is called as root, I re-invoke it as oracle. However,
> 'dirname' doesn't seem to be working as expect and I have no idea why
> or how to get around it. A little bit of googl'ing didn't help either
> so I turn to old faithful. J
>
>
[...]
cd -P -- "$(dirname -- "$_script")" && pwd -P )
Date: Fri, 27 May 2011 21:26:54 +0200
Message-ID: <4DDFFAFE.8030501_at_gmail.com>
On 27/05/2011 20:42, Stephens, Chris wrote:
>
> I'm writing a script to allow the sysadmin's to kill any active
> sessions for a particular database user.
>
> If the script is called as root, I re-invoke it as oracle. However,
> 'dirname' doesn't seem to be working as expect and I have no idea why
> or how to get around it. A little bit of googl'ing didn't help either
> so I turn to old faithful. J
>
>
[...]
You could use something like this (assuming a *POSIX* shell):
SCRIPT_DIR=$(
cd -P -- "$(dirname -- "$0")" && pwd -P
)
It won't work if you invoke the script as:
sh script_name
and the script is not in the current directory.
In that case you could use something like this:
SCRIPT_DIR=$(
_script=$0
case $_script in
( */* ) ;;
( * ) [ -e "$_script" ] || _script=$(command -v -- "$0")
esac
cd -P -- "$(dirname -- "$_script")" && pwd -P )
It won't work in all situations, but it may be sufficient :)
Regards
Dimitre
-- http://www.freelists.org/webpage/oracle-lReceived on Fri May 27 2011 - 14:26:54 CDT