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Top Forums Shell Programming and Scripting Calling a perl script from a perl script Post 302106147 by new2ss on Tuesday 6th of February 2007 10:03:06 PM
Old 02-06-2007
Quote:
Originally Posted by cbkihong
Yes. Use require().

I think unless your B.pl runs itself in background mode (such as that of daemons, for instance), the perl process for B.pl will not exit before it completes, and hence system() in your calling script will not return (note that system() just executes a perl process in the same way as other processes). If the exit() occurs after system(), you can assume it will only be executed when B.pl exits for whatever reason.

Did you try to find out whether that is the case?
B.pl is not a background mode, its a normal user script.

i qoute from perldoc for system "...Does exactly the same thing as exec LIST , except that a fork is done first, and the parent process waits for the child process to complete...." So i can take it that my first script will wait for B.pl to finish before exiting.

the perldoc entry for exec says " ..The exec function executes a system command and never returns--". Therefore i can assume that after it calls B.pl, the calling script will exit.

My intention is not to wait for B.pl to finish, ( ie, runs B.pl and the caller script itself exit ) therefore i should use exec? Any draw backs?
 

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SIEVESHELL(1)						User Contributed Perl Documentation					     SIEVESHELL(1)

NAME
sieveshell - remotely manipulate sieve scripts SYNOPSIS
sieveshell [--user=user] [--authname=authname] [--realm=realm] [--password=password] [--exec=script] [--execfile=file] server[:port] sieveshell --help DESCRIPTION
sieveshell allows users to manipulate their scripts on a remote server. It works via MANAGESIEVE, a work in progress. The following commands are recognized: list list scripts on server. put <filename> upload script to server. get <name> [<filename>] get script. if no filename display to stdout delete <name> delete script. activate <name> activate script. deactivate deactivate all scripts. OPTIONS
-u user, --user=user The authorization name to request; by default, derived from the authentication credentials. -a authname, --authname=authname The user to use for authentication (defaults to current user). -r realm, --realm=realm The realm to attempt authentication in. -p password, --password=password The password to use when authenticating to server. Note that this parameter can be seen in the process list. Use with caution! -e script, --exec=script Instead of working interactively, run commands from script, and exit when done. -f file, --execfile=file Instead of working interactively, run commands from file file and exit when done. REFERENCES
[MANAGESIEVE] Martin, T.; "A Protocol for Remotely Managing Sieve Scripts", draft-ietf-managesieve-03.txt, Mirapoint, Inc.; May 2001, work in progress. AUTHOR
Tim Martin <tmartin@mirapoint.com>, and the rest of the Cyrus team <cyrus-bugs@andrew.cmu.edu>. perl v5.14.2 2014-06-03 SIEVESHELL(1)
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