bash-2.03$ sudo find /usr -name lockfile bash-2.03$ uname -a AIX <snip> 3 5 00C5227E4C00
Not so standard, methinks. AIX 5.3L has no such command. However, touch works well. Something like this has always worked for me. while [ -d /var/somelockfile ]; do sleep 1; done touch /var/somelockfile # do something rm /var/somelockfile ----- Original Message ---- From: Bart Whiteley <[EMAIL PROTECTED]> To: Provo Linux Users Group Mailing List <[email protected]> Sent: Monday, February 12, 2007 1:03:19 PM Subject: Re: synchronizing concurrent shell scripts On 2/12/07, Michael L Torrie <[EMAIL PROTECTED]> wrote: > > On Mon, 2007-02-12 at 11:45 -0700, Michael L Torrie wrote: > > I have a situation where shell scripts, executed asynchronously, need to > > have a way to wait for each other when doing a load-intensive operation. > > Do any of you have any methods for synchronizing the operation of > > concurrent shell scripts? > > My bad. Google reveals that there's a nice standard unix > command: /usr/bin/lockfile > > man lockfile reveals this is just what I'm looking for. > > lockfile... cool. If you happen to be using bash, you can do the same thing with a 'set -o noclobber' and avoid the overhead of forking an additional process (lockfile). http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_03_06.html#sect_03_06_02 /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */ /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
