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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 302173600 by fpmurphy on Friday 7th of March 2008 06:45:01 AM
Old 03-07-2008
Good, Bakunin, we agree that the variable "1" is not set by the "echo 1=$1" statement.

You claim that $1 (first positional paramater) should be available in your current environment upon sourcing a file such as in the example provided

Sorry, again, I must disagree. Positional parameters are initially assigned when you invoke a shell, temporarily replaced when a shell function is invoked, and can only be reassigned with the set special built-in command.

$1 is available within the testme script but not outside it. To illustrate this point, try the
following:
Code:
#!/usr/bin/ksh
echo "Positional Parameter 1=$1"
. ./testme XXX
echo "Positional Parameter 1=$1"

which gives the following output
Code:
$ ./demo FPM
Positional Parameter 1=FPM
1=XXX
Positional Parameter 1=FPM
$

Have you a counter example to disprove my assertion?
 

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LEARN ABOUT DEBIAN

service

service(8)						      System Manager's Manual							service(8)

NAME

       service - run a System V init script

SYNOPSIS

       service SCRIPT COMMAND [OPTIONS]

       service --status-all

       service --help | -h | --version

DESCRIPTION

       service	runs a System V init script in as predictable an environment as possible, removing most environment variables and with the current
       working directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT.  The  supported  values  of  COMMAND  depend  on  the
       invoked	script.  service passes COMMAND and OPTIONS to the init script unmodified.  All scripts should support at least the start and stop
       commands.  As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start  com-
       mand.

       service --status-all runs all init scripts, in alphabetical order, with the status command.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

       /etc/init.d
	      The directory containing System V init scripts.

ENVIRONMENT

       LANG, TERM
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton,
       update-rc.d(8),
       init(8),
       invoke-rc.d(8).

								     Jan 2006								service(8)
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