Solaris™ 7 Reference

trap, onintr — Shell Built-in Functions to Respond to Hardware Signals

Synopsis

sh

trap [argument n [n2...]] 

csh

onintr [-| label] 

ksh

* 
trap [arg sig [sig2...]] 

Description

Use the built-in shell trap and onintr commands in shell scripts to specify a sequence of commands to be executed when your shell script receives an interrupt signal.

Bourne Shell

The trap command argument is read and executed when the shell receives numeric or symbolic signal(s) (n ).

Note

argument is scanned once when the trap is set and once when the trap is taken.

Trap commands are executed in order of signal number or corresponding symbolic names. Any attempt to set a trap on a signal that was ignored on entry to the current shell is ineffective. An attempt ...