System Error codes are messages of error and errors that programmers can use when their software is having issues. They can be displayed by computers to users in response to software problems as well as hardware issues or even certain types of input by the user. System error codes are typically presented as an acronym that includes a description of the error as well as suggestions for what to do next.
These error codes are often found on the internet when websites are not available or if an internal server issue occurs for instance, a database problem. On local machines they could be as simple as a “file too long” and the solution is changing the name of the file, or more complex like “no space left on the disk.” In this case, you may need to shut down certain programs (to clear swap files) or erase data, or purchase an additional hard disk.
Other system problems could be as serious as “fatal error,” in which a program has made the decision to quit or stop, but they may also be as simple as an alert that something isn’t working. The header file errno is a collection of error codes for virtually every possible error in the GNU/Hurd operating system.
These errors can range from the simple “text file busy” when an operation is trying modify a read-only file to the more complicated “broken pipeline.” These errors may also indicate that the process trying to perform on the resource has been interrupted by a signal such as SIGPIPE and has not been taken care of.