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$ touch /tmp/foo
$ chmod -w+x /tmp/foo
...
$ perl -MFile::Copy -wE 'move "/tmp/foo", "/var/tmp/foo"'
$ ls -l /var/tmp/foo
$ -rw------- 1 javafan staff 0 Aug  7 18:16 /var/tmp/foo

$ touch /tmp/foo
$ chmod -w+x /tmp/foo
...
$ mv /tmp/foo /var/tmp/foo
$ ls -l /var/tmp/foo
$ -r-x------ 1 javafan staff 0 Aug  7 18:18 /var/tmp/foo