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Full Discussion: How to clear $1 when dot-running a script.
Top Forums Shell Programming and Scripting How to clear $1 when dot-running a script. Post 302173172 by HobieCoop on Wednesday 5th of March 2008 11:02:09 PM
Old 03-06-2008
How to clear $1 when dot-running a script.
Here's my problem: the $1 parameter is getting permanently set when you dot-run a script - and I cannot unset it.

Here's how to duplicate the problem:

1) Create a script called testme and put this simple command in the script:
echo 1=$1

Save the script

2) Make the testme script executable
chmod a+rx testme

3) Now dot-run the script:
. testme

Output:
1=

4)Now dot-run the script with a parameter:
. testme YOU

Output:
1=YOU

5) Now dot-run the script without a parameter:
. testme

Output:
1=YOU

HUH??? There's the problem!!! Why did the script remember the $1 parameter value?

The question is - how do I clear that $1 value???

edit by bakunin: while this is a very interesting question it is hardly related to AIX. I move it over to "Shell programming and scripting" therefore.
Last edited by bakunin; 03-06-2008 at 05:36 AM..
 

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LEARN ABOUT SUSE

avahi-autoipd.action

avahi-autoipd.action(8) 				      System Manager's Manual					   avahi-autoipd.action(8)

NAME

       avahi-autoipd.action - avahi-autoipd action script

SYNOPSIS

       /etc/avahi/avahi-autoipd.action

DESCRIPTION

       avahi-autoipd.action  is  the action script that is called whenever an IP address has been acquired by avahi-autoipd or when it detected an
       IP address conflict. The script should add or remove the specified address from the specified network interface.

PARAMETERS

       argv[1] An event string: one of BIND, CONFLICT, UNBIND or STOP. If BIND is passed an IP address	has  been  sucessfully	acquired  and  the
       script  shall  add  it to the network interface. If CONFLICT is passed avahi-autopid detected a IP address on the local network, the action
       script should remove the configured IP address. If UNBIND is passed the IP address should be removed from the  interface,  too,	because  a
       routable  address has been configured to the interface by some other program. If STOP is passed the avahi-autoipd is being shutdown and the
       action script should remove the IP address. In short: on BIND the address should be added to the interface, on CONFLICT, UNBIND or STOP	it
       should be removed.

       argv[2] The network interface name.

       argv[3] An IP address from the IPv4LL range.

AUTHORS

       The Avahi Developers <avahi (at) lists (dot) freedesktop (dot) org>; Avahi is available from http://avahi.org/

SEE ALSO

       avahi-autoipd(8), dhclient-script(8), ip(8), ifconfig(8)

COMMENTS

       This man page was written using xml2man(1) by Oliver Kurth.

Manuals 							       User						   avahi-autoipd.action(8)
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