Linux system errors

Process Killed — the process was terminated by a SIGKILL signal

Segmentation Fault (SIGSEGV) — the process accessed restricted memory

Segmentation Fault Exit — the process terminated due to a SIGSEGV signal

Input/Output Error (EIO) — a hardware-level read or write operation to a device failed

Out of Memory (ENOMEM) — the kernel cannot allocate the requested amount of memory

General Error — a non-specific failure in a command or script

Permission Denied — the process does not have permission to access the resource

Command Not Executable — the file was found but is not executable

Unspecified Error — a general-purpose failure code with no standardized meaning

Shell Misuse — improper use of shell built-ins or syntax

Command Not Found — the specified command or file could not be located

Terminated by User — the process was interrupted by a SIGINT signal

Invalid Exit Argument — script exited with an out-of-range status or terminated by a signal