12-12-2008
If you are still stuck with this, I have a suggestion.
Create a touch file with predefined name and before each iteration in the shell script, check for this file. Quit the script if the file is available.
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MAKEDEV(8) System Manager's Manual MAKEDEV(8)
NAME
makedev - make system special files
SYNOPSIS
/dev/MAKEDEV device...
DESCRIPTION
MAKEDEV is a shell script normally used to install special files. It resides in the /dev directory, as this is the normal location of spe-
cial files. Arguments to MAKEDEV are usually of the form device-name? where device-name is one of the supported devices listed in section
4 of the manual and ``?'' is a logical unit number (0-9). A few special arguments create assorted collections of devices and are listed
below.
std Create the standard devices for the system; e.g. /dev/console, /dev/tty. The VAX-11/780 console floppy device, /dev/floppy, and
VAX-11/750 and VAX-11/730 console cassette device(s), /dev/tu?, are also created with this entry.
local Create those devices specific to the local site. This request causes the shell file /dev/MAKEDEV.local to be executed. Site spe-
cific commands, such as those used to setup dialup lines as ``ttyd?'' should be included in this file.
Since all devices are created using mknod(8), this shell script is useful only to the super-user.
DIAGNOSTICS
Either self-explanatory, or generated by one of the programs called from the script. Use ``sh -x MAKEDEV'' in case of trouble.
SEE ALSO
intro(4), config(8), mknod(8)
4.2 Berkeley Distribution May 19, 1986 MAKEDEV(8)