In a system administration way of working around networking services hosted by GNU Linux or Linux for short, one must be equipped with a crash recovery kit. The tool kit will enable administrators to analyze and derive a solution for a Linux system crash (which rarely happens). But the rule of thumb will be always applied in a system. There will be a fail-safe recovery procedure that can be implemented once a system breaks down- no matter how perfect the design and implementation of it is.
Fortunately different variance or flavors of Linux offer different approaches to system recovery. One can be a file system check recovery; another is using a rescue disk provided by a respective Linux distribution. But having a USB bootable image of the Linux operating system is the best solution there is for a system recovery. The reason is that Live OS on USB loads the regular settings, drivers, and defaults for immediate usage by users. So hardware involved in the machine can be accessed or used to make sure the hardware is working fine, and users will be able to isolate the problem away from the hardware and concentrate more on the software part behind the Linux operating system. With USB used as a media to install a recovery kit for Linux OS, administrators can bring it anywhere and be ready anytime.
