Use bash
do trap
incorporado para gerar uma instância bash
na saída do script:
trap 'bash' EXIT
De help trap
:
trap: trap [-lp] [[arg] signal_spec ...]
Trap signals and other events.
Defines and activates handlers to be run when the shell receives signals
or other conditions.
ARG is a command to be read and executed when the shell receives the
signal(s) SIGNAL_SPEC. If ARG is absent (and a single SIGNAL_SPEC
is supplied) or '-', each specified signal is reset to its original
value. If ARG is the null string each SIGNAL_SPEC is ignored by the
shell and by the commands it invokes.
If a SIGNAL_SPEC is EXIT (0) ARG is executed on exit from the shell.
Portanto, executando trap 'bash' EXIT
, bash
será lido e executado quando o shell receber o sinal EXIT; gerar um shell interativo consequentemente terá o efeito de impedir o fechamento do terminal:
function error_exit
{
echo "Error: ${1:-"Unknown Error"}" 1>&2
exit 1 # This unfortunately also exits the terminal
}
trap 'bash' EXIT
# lots of lines possibly calling error_exit
cd somewhere || error_exit "cd failed"
rm * || error_exit "rm failed"
# even more lines possibly calling error_exit