Función de la trampa pasando argumentos?
Pregunta
He estado buscando en todas partes y he llegado a creer que no hay forma de hacer eso, aparte de tener variables globales, pero creo que el Guru en StackOverflow.com puede ayudarme:
¿Hay alguna forma en Bash para atrapar una función pasando argumentos a él?
Por ejemplo, trap <function_name> <arg_1> <arg_2> SIGINT
?
Solución
trap
lets you specify an arbitrary command (or sequence of commands), but you have to pass that command as a single argument. For example, this:
trap 'foo bar baz | bip && fred barney ; wilma' SIGINT
will run this:
foo bar baz | bip && fred barney ; wilma
whenever the shell receives SIGINT. In your case, it sounds like you want:
trap '<function> <arg_1> <arg_2>' SIGINT
Otros consejos
Maybe I'm misunderstanding you, but ... this is legal:
trap "cp /etc/passwd $HOME/p" SIGINT
trap 'cp /etc/passwd /tmp/p; echo wooo hoo' SIGINT
I'm not sure I understand correctly what you mean, but if you want to make a signal handler call a function and pass it parameters, trap "function arg1 arg2" SIGNAL
should work. For example trap "ls -lh /" INT
will cause Ctrl+C in your shell to result in ls -lh /
(program with 2 args) being called.