I have a script in which I have used a trap command to execute a cleanup function if the SIGnal is encountered. The script now fails to perform when specified keys like h, H, l, L, F, q are pressed. These are the keys to direct the program. But if even a shift key or others is pressed those keys are then ignored. Those keys are read with:
read -s -n 1
The trap command is:
trap cleanup 2 3 6 15 17 18 19 20 21 23 24 26
which covers: SIGINT=2, SIGQUIT=3, SIGABRT=6, SIGTERM=15, SIGCHLD= (17,18,20), SIGTSTP=(18,20,24), SIGSTOP=(17,19,23), & SIGTTIN=(21,26).
Is the problem in the read, SIG assignments, or elsewhere?

If you don't post your code, how can we know what happens?

Would have posted it but it is TOOOO long.
None the less I found the problem to be generated by a 2nd read -s -n 1 without a target variable outside of a forever loop containing the other read properly targeted. Once I gave the 1st read a target the problem was corrected.

Would have posted it but it is TOOOO long.
None the less I found the problem to be generated by a 2nd read -s -n 1 without a target variable outside of a forever loop containing the other read properly targeted. Once I gave the 1st read a target the problem was corrected.