On 11/26/10 5:44 PM, John P. Rouillard wrote: > [..snip..] > use (note this uses a hard link not symbolic but read on): > > #****v* calendar/relink_current > # SYNOPSIS > # relink_current - created hard link to newest log file in directory > # DESCRIPTION > # Every minute find the most recently written log file and obtain it's > # inode number. Obtain the inode number of the file current (which > # must exist). If they have the same inode number, exit status 0. If > # they don't force current to be linked to the most recently written > # log file. > #****** > type = calendar > time = * * * * * > desc = relink current file > action = shellcmd (/bin/sh -c 'lastfile=`ls -tr ../*.log| tail -n 1`; [ `stat > --printf "%i" current` -eq `stat --printf "%i" $lastfile` ] || ln -f > $lastfile current') > > and use sec -input=current. > John, Your action is complicated, but it handles the issue of having a dangling reference (I could not see what was happening until I broke out 'sh -c' as 'sh -xc') . Assuming that I have a writable spot in the same file system, the hard link works. I will look at stat -L as you suggest for handling symbolic references.
Thanks, Tim > I think stat also support the -L flag to dereference a symbolic link, > so this should work with minor changes if you want to use ln -s rather > than ln (which you will have to if you are on different > filesystem). The advantage of this method is that the file that SEC is > following never changes unless there is a new log file to follow. > > (If you don't have stat on your system, the gnu coreutils software > provides one, or you can use a perl one liner.) > [..snip..] -- Tim Peiffer Network Support Engineer Office of Information Technology University of Minnesota/NorthernLights GigaPOP +1 612 626-7884 (desk) ------------------------------------------------------------------------------ Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! Tap into the largest installed PC base & get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev _______________________________________________ Simple-evcorr-users mailing list Simple-evcorr-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/simple-evcorr-users
