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Full Discussion: Need threaded python script
Top Forums Shell Programming and Scripting Need threaded python script Post 302896913 by alister on Thursday 10th of April 2014 12:59:11 AM
Old 04-10-2014
Your shell script is very poorly implemented. Perhaps an approach that isn't so inefficient would suffice.
Code:
while IFS=, read -r service port proto; do
    while read -r secgroup; do
        /usr/bin/nova secgroup-add-rule "$secgroup" "$proto" "$port" "$port" 0.0.0.0/0
    done < secgroups.txt
done < tcp-ports.txt

I did not test that, so there may be a typo.

Also, your code doesn't appear to use $service but uses $port twice in nova's command options.

If you want to speed it up further, don't use bash. If your system's sh is something else, try it (dash or ksh, for example, are faster than bash).

If you use ksh or bash, you can use arrays to speed up the inner loop.

Regards,
Alister
Last edited by alister; 04-10-2014 at 02:06 AM..
 

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LEARN ABOUT SUNOS

getusershell

getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME

       getusershell, setusershell, endusershell - get legal user shells

SYNOPSIS

       #include <unistd.h>

       char *getusershell(void);

       void setusershell(void);

       void endusershell(void);

DESCRIPTION

       The  getusershell()  function  returns  a  pointer  to  a  legal  user  shell  as defined by the system manager in the file /etc/shells. If
       /etc/shells does not exist, the following locations of the standard system shells are used in its place:

       /bin/bash		  /bin/csh
       /bin/jsh 		  /bin/ksh
       /bin/pfcsh		  /bin/pfksh
       /bin/pfsh		  /bin/sh
       /bin/tcsh		  /bin/zsh
       /sbin/jsh		  /sbin/pfsh
       /sbin/sh 		  /usr/bin/bash
       /usr/bin/csh		  /usr/bin/jsh
       /usr/bin/ksh		  /usr/bin/pfcsh
       /usr/bin/pfksh		  /usr/bin/pfsh
       /usr/bin/sh		  /usr/bin/tcsh
       /usr/bin/zsh		  /usr/xpg4/bin/sh

       The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells.

       The setusershell() function rewinds the file or the list.

       The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells.

RETURN VALUES

       The getusershell() function returns a null pointer on EOF.

BUGS

       All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved.

SunOS 5.10							    30 Aug 2004 						  getusershell(3C)
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