Interactive Bash Tools

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Bash Exit Code Lookup

An unhandled exit code hides why a bash script failed and lets errors cascade silently into data loss. Enter any code 0-255 for the plain-English meaning, causes, and a copy-paste error handler.

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Cron Job Builder

A wrong cron expression runs jobs at the wrong time or skips them entirely with no error output. Build cron expressions visually and verify the human-readable schedule before saving to crontab.

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Chmod Permissions Builder

Wrong file permissions on a web server expose secrets or let compromised scripts overwrite application files. Build chmod commands visually — shows octal, symbolic notation, and the exact chmod command.

debug

Bash $PATH Debugger

Duplicate and missing PATH entries cause command-not-found errors and slow shell startup by scanning dead directories. Paste your PATH to find duplicates, empty entries, and ordering problems.

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Bash Boilerplate Generator

A bash script without error handling silently continues after failures and leaves systems in a broken partial state. Generates a production-ready template with set -euo pipefail, traps, and argument parsing.

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Rsync Command Builder

A wrong rsync flag silently overwrites destination files or skips critical data with no error output. Build rsync commands visually — toggle archive, compress, delete, dry-run, SSH, and exclude patterns with a live preview.

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grep Pattern Builder

A wrong grep flag silently matches the wrong files or swallows error output with no warning. Build the exact grep command you need — recursive, case-insensitive, with context lines — and get a plain-English explanation for every output.

reference

ShellCheck Error Decoder

ShellCheck warnings that go unfixed become the exact edge-case bugs that break in production on unexpected input. Enter any SC error code for the rule name, plain-English explanation, and a before/after fix example.

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Bash trap & Signal Handler Builder

A script that exits without a trap leaves temp files, lock files, and background jobs behind every time it crashes. Build your trap block visually — pick signals, choose cleanup actions, copy the result.

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Find Command Builder

A find action placed before its filters runs on everything find walks — find -delete before -name empties the whole tree. Build find commands with tests ordered before actions, patterns quoted, and every flag explained.