Linux Bash Exit Code 1 — General Error

Overview

Bash exit code 1 is a general catchall for errors indicating the command failed, requiring investigation of the specific command output.

Key Details

• Exit code 1 is the most generic error code in bash
• It means 'something went wrong' without a specific error category
• Many programs use exit code 1 for any non-specific failure
• Different from exit code 2 (misuse of command), 126 (not executable), 127 (not found)
• Check stderr output for the actual error message

Common Causes

• Command encountered an error during execution
• File not found or permission denied during operation
• grep found no matches (returns 1 when no match)
• diff found differences between files (returns 1)
• Script explicitly called exit 1 on error condition

Steps

1. 1Check stderr output — the actual error message explains what failed
2. 2Run the command with verbose flag (-v) if available
3. 3For scripts, add set -x at the top to trace execution
4. 4Check $? immediately after the command to capture the exit code
5. 5Read the command man page for exit code documentation: man command_name

Tags

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Frequently Asked Questions