It appears someone made some very dumb assumptions when they were designing the code but given that it is COBOL, I'm hardly surprised. If you do a man insf, you will see that there are arguments you can supply to specify the range and index.
Here is one approach that should work.
Create a script that will capture the major/minor device number tuples of /dev/pts/t*, sort them, old name, and proposed new name to a file.
Now read that list and first remove the old device node and create a new node with the same major/minor device tuples but with the new name.
Script 1:
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#!/usr/bin/sh
typeset DIR=/dev/pts
typeset SAVEFILE=/var/tmp/ptslist
ls -l ${DIR}/t* | \
awk '{print $6,$5,$NF}' | sort | \
awk -v dir=${DIR} '{printf("%s %s %s %s/t%d\n",$1,$2,$3,dir,++knt)}' > ${SAVEFILE}
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Script 2:
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#!/usr/bin/sh
typeset SAVEFILE=/var/tmp/ptslist
cat ${SAVEFILE} | while read MINOR MAJOR OLDNAME NEWNAME
do
echo "Removing ${OLDNAME}"
# rm ${OLDNAME}
echo "Creating ${NEWNAME} c ${MAJOR} ${MINOR}"
# mknod ${NEWNAME} c ${MAJOR} ${MINOR}
done
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Remove the commented lines for the rm and mknod commands when you feel confident.
NOTE: Backup the /dev/pts directory before you do this so that you can get yourself out of trouble almost as fast as you got yourself in. I intentionally divided this into two parts with a file so that you could edit the file if you wish and also the file could be used to recreate the original device nodes if needed. Users should be off the system while you do this and you must do this from the console. May The Force be with you.
If it ain't broke, I can fix that.
