On Fri, 7 Dec 2018 at 10:22, Dominic Raferd <domi...@timedicer.co.uk> wrote:
> On Fri, 7 Dec 2018 at 09:15, Matus UHLAR - fantomas <uh...@fantomas.sk> > wrote: > >> On 06.12.18 15:45, Dominic Raferd wrote: >> >I am using incrond to monitor an mbox file (in /var/mail) for changes, >> >> I think I have it working now. The problem was not postfix (of course), > it was that I was modifying the mbox file using > postlock $MBOXFILE sed -if $SCRIPTFILE $MBOXFILE > which in fact replaces it, I am now using: > postlock $MBOXFILE /bin/bash -c "sed -f $SCRIPTFILE $MBOXFILE|sponge > $MBOXFILE" # not sure if bash subshell is necessary? > and also comparing the inode before and after - if the inode changes > (which is not normally the case) then I restart incrond. > To complete this thread: because sponge does not always prevent a change in the inode of the file to which it is writing (in this case $MBOXFILE), and sed -i never does, I now use ed; and the rather horrible hack of restarting incrond is not required.
