I didn't see that documented anywhere (and I have no man pages installed for flock, fcntl or lockf on the AIX machine I am working on!) so I tested it out.

By hand it seemed to work... but running it in a script of 
#!/bin/ksh

testlock.pl 1 &
testlock.pl 2 &
testlock.pl 3 &
testlock.pl 4 &
testlock.pl 5 &
gave me this: 

got lock 4
finished sleeping 4
got lock 3
finished sleeping 3
got lock 1
finished sleeping 1
got lock 5
finished sleeping 5
got lock 2
finished sleeping 2
So I don't think that's supported on all platforms
--------------
"But what of all those sweet words you spoke in private?"
"Oh that's just what we call pillow talk, baby, that's all."

In reply to Re^2: Locking/unlocking program execution using a queue by RazorbladeBidet
in thread Locking/unlocking program execution using a queue by RazorbladeBidet

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