##
tmpfs /var/memdir tmpfs nodev,nosuid,size=1M 0 0
##
##
use warnings;
use strict;
use File::Touch;
my $lock = '/var/memdir/script.lock';
exit if -e $lock;
touch($lock); # dies on error by default
printf "Exists after create: %d\n", -e $lock // 0;
# do stuff
unlink $lock or die "Can't delete the damned lock file $lock: $!";
printf "Exists after delete: %d\n", -e $lock // 0;
##
##
spek@scelia ~/scratch $ perl script.pl
Exists after create: 1
Exists after delete: 0