System Error Codes are defined errors and error messages which can be utilized by programmers when their software has an issue. They are displayed to users of computers in response to hardware issues, software issues, or certain types of input from users. The system error codes are displayed as an acronym, together with a description and suggestions for what to do next.
These error codes are often encountered on the internet when a web page is not available or if an internal server issue arises for example, a database problem. On local machines they could be as simple as a “file too long” which can be resolved by changing the file’s name, or more complex like “no disk space left.” In this case you might have to close some applications (to clear swap files) or erase some files, or buy an extra hard disk.
Other system problems could be as serious as “fatal error,” in which a program has decided to quit or stop, but they may also be as simple as a signal that something isn’t quite right. Most of the errors that be experienced on the GNU/Hurd system is represented by an error code in the header file errno.
These errors could be as simple as “text file busy,” where the operation attempts to modify a read-only file or as complex as “broken pipe.” These errors can also indicate that the operation trying to run on the resource was stopped by a SIGPIPE signal and has not been addressed.