Cave 5

A re a class of software bugs that are considered exceptionally difficult to understand and repair. There are several kinds, mostly named after scientists who discovered counterintuitive things. Heisenbug A heisenbug (named after the Heisenberg Uncertainty Principle ) is a computer bug that disappears or alters its characteristics when an attempt is made to study it. One common example is a bug that occurs in the released version compile of a program, but not in a debug-mode version. Another example is a bug caused by a race condition. A heisenbug may also appear in a system that does not conform to the command-query separation design gu Bohrbug A Bohr bug or bohrbug (named after the Bohr atom model ) is a bug that makes itself manifest consistently under a well-defined (but possibly unknown) set of conditions. Thus, in contrast with heisenbugs, a bohrbug does not disappear or alter its characteristics when it is researched. These include the easiest bugs to fix (where the natu...

ifconfig es un comando que sin parámetros nos muestra la configuración actual de nuestra pc, podemos usar ifconfig con el parámetro up para levantar una placa de red y asignarle una ip ejemplos: ifconfig up eth0 , esto levanta la placa que esta montada en eth0 , la dirección ip que tomará por defecto sera cualquiera disponible dentro de nuestra red. ifconfig eth0 10.0.0.1, para definir una ip estática para nuestra placa de red deberemos dar los parámetros, donde 10.0.0.1 es la ip estática asignada, la mascara de red será la que ya tenemos por defecto ifconfig eth0 10.0.0.1 netmask 255.255.224.0 , para definir la mascara de red, el comando sera similar al anterior solo que especificando la mascara. ifconfig eth0 down, para dar de baja una placa de red de nuestro equipo es este comando ip's virtuales ifconfig up eth0:0 10.0.0.2, donde :0 es la direccion virtual donde sera montada nuestra nueva ip, podemos manejar las ip’s virtuales que queramos solo hay que cambiar ...