Expect script problem Post: 302185705

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Top Forums Shell Programming and Scripting Expect script problem Post 302185705 by ramen_noodle on Tuesday 15th of April 2008 03:16:56 PM

04-15-2008

Registered User

I don't understand why this script attempts to escape the variable notation ($)
preceding the argv list.
it is utterly broken this way.
example:

Code:

proc randlist {len {components "satrednfgbhj"}} {
set i 0
                      while {$i < $len} {
                            set a [expr int(1 + rand() * [string length $components] - 1)]
                             lappend ret "[string index $components $a]"
                             incr i
                       }
                       return $ret
}

foreach a [randlist 23] {puts -nonewline "No interp of escape = \\$a\nAnd interpreted = " ; eval puts "\\$a"}

Code:

Output of above:
No interp of escape = \f
And interpreted =  
No interp of escape = \n
And interpreted = 

No interp of escape = \j
And interpreted = j
No interp of escape = \e
And interpreted = e
No interp of escape = \t
And interpreted = 	
No interp of escape = \j
And interpreted = j
No interp of escape = \e
And interpreted = e
No interp of escape = \e
And interpreted = e
No interp of escape = \n
And interpreted = 

No interp of escape = \f
And interpreted =  
No interp of escape = \t
And interpreted = 	
No interp of escape = \e
And interpreted = e

Short answer: There is no need to escape the dollar sign notation and it breaks interpretation of characters during command expansion.

ramen_noodle

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LEARN ABOUT SUSE

installsieve

INSTALLSIEVE(1) 					      General Commands Manual						   INSTALLSIEVE(1)

 *

NAME

       installsieve - user utility for managing sieve scripts

SYNOPSIS

       installsieve

DESCRIPTION

       installsieve is a utility that allows users to manage their sieve scripts kept on the server.

OPTIONS

       -v <name> View script with the given name. The script if retrieved sucessfully is output to standard output.

       -l  List  all  of  the scripts currently on the server. If one of the scripts is active a arrow is printed indicating that it is the active
       script.

       -p <port> Port to connect to. If left off this defaults to "sieve" as defined in /etc/services.

       -i <file> Install a file onto the server. If a script with the same name already exists on the server it is overwritten.  Upon  sucessfully
       putting	the  script on the server the script is set active. If <file> has the extension .script it is chopped when put on the server since
       sieve names may not contain a '.'.

       -a <name> Set <name> as the active script. The list of available names can be obtained from the '-l' option..

       -d <name> Delete the sieve script on the server with <name>.

       -m <mechanism> Force installsieve to use <mechanism> for authentication. If not specified the strongest authentication mechanism is chosen.

       -g <name> Get the sieve script with <name> and save it to disk with a ".script" extension. If a file with that name already  exists  it	is
       overwritten.

       -u <user> Userid/Authname to use for authentication; by default, the current user.

CMU
								   Project Cyrus						   INSTALLSIEVE(1)

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