Re: delaying postfix until/unless VPN is up/connected

[Bill Cole]

On 17 Apr 2020, at 0:57, Ranjan Maitra wrote:

On Mon, 23 Mar 2020 17:19:42 -0400 (EDT) Wietse Venema <wie...@porcupine.org> wrote:

Corrected code follows (missing do/done).

Save to file, chmod +x  name-of-file, don't run this script from
cron.

It needs to be started at boot time, or before you make a VPN
connection.

#!/bin/sh

while :
do
    ifconfig xxx | egrep 'UP|DOWN'
    sleep 2
done | while read status
do
    case "$status" in
  *UP*) if [ "$prev" -ne up ]
        then
            prev=up
            postconf -X defer_transports
            postfix reload
        fi;;
     *) if [ "$prev" -ne down ]
        then
            prev=down
            postconf defer_transports=smtp
            postfix reload
        fi;;
    esac
done

        Wietse

Hi,

Sorry to bring this up after a while, but I have been trying this code, but seem to hit a syntax error:

line 10: [: : integer expression expected


Line10: is  the following line:

  *UP*) if [ "$prev" -ne up ]

Any help?

Make that line:

   *UP*) if [ "$prev" = up ]

Also replace '-ne' in line 16 with '='



--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not For Hire (currently)