About Shell Diff Checker
Compare shell or Bash scripts and CI pipeline files to track command changes and variable updates between deployments. Line-level diff with syntax highlighting for keywords, variables, strings, and comments.
Frequently Asked Questions
What is a shell script diff tool?
A shell script diff tool compares two shell scripts and highlights every line-level difference. It lets you review changes to deployment scripts, configuration provisioners, and CI pipeline scripts without needing a local Git environment.
How do I compare two versions of a shell script to find what changed?
Paste the old version into the left panel and the new version into the right. The diff highlights changed commands, new environment variable assignments, modified conditionals, and added functions. Use word diff mode for pipelines and long one-liner commands where line diff shows too much noise.
Can a shell diff tool detect changes in heredoc blocks?
Yes. Heredoc content is treated as regular text and highlighted character by character. Changes inside a heredoc (configuration template, embedded script, SQL) appear just like changes in regular script lines.
What is the best way to review infrastructure shell scripts before deploying?
Compare the current deployed script against the new version. Focus on changes to rm commands, chmod or chown calls, service restarts, and database commands — these have the highest blast radius. Pay special attention to any new curl | bash patterns or untrusted variable interpolation.
Is my shell script sent to a server when using this online diff tool?
No. All processing runs in your browser. Shell scripts are never transmitted to any server. This is important for deployment scripts that may contain server addresses, credential patterns, or proprietary infrastructure configuration.
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