Snippets / Tags
shell
11 shell code snippets across 2 languages. Copy-paste solutions from production code.
11
snippets
aws cli
6 snippetsAssume an IAM Role from the AWS CLI
Use aws sts assume-role to swap into a cross-account IAM role and export temporary credentials into your shell session.
Fetch and Parse a Secret from AWS Secrets Manager
Use aws secretsmanager get-secret-value with jq to fetch a JSON secret and pipe individual fields into shell variables.
Fetch Monthly AWS Spend by Service from the CLI
Use aws ce get-cost-and-usage to pull a monthly cost breakdown grouped by service. Cleaner than navigating Cost Explorer in the console.
Generate a Presigned URL for an S3 Object
Use aws s3 presign to generate a time-limited download URL for a private S3 object. Share files without making the bucket public.
List Running EC2 Instances as a Clean Table
Use aws ec2 describe-instances with a JMESPath query to print every running instance with ID, IP, instance type, and Name tag.
Sync a Folder to S3 with Include and Exclude Filters
Use aws s3 sync with --exclude, --include, --dryrun, and --delete to deploy a directory to an S3 bucket safely.
git
5 snippetsFind the Bad Commit with git bisect
Use git bisect to binary-search through commits and find the exact one that introduced a bug or test failure.
Remove Untracked Files Safely with git clean
Use git clean -n to preview what will be deleted, then -fd to actually remove untracked files and empty directories. Without losing work.
Squash the Last N Commits with Interactive Rebase
Use git rebase -i to squash, reorder, edit, or drop the last N commits before pushing or opening a pull request.
Undo the Last Git Commit (Keep or Discard Changes)
How to undo the most recent git commit using git reset, with --soft, --mixed, and --hard explained side by side.
Useful git stash Patterns Beyond stash and pop
Stash with a message, stash untracked files, list stashes, apply a specific stash, and stash a single file. The full git stash workflow.