Standard output
Standard output is a process's conventional stream for writing ordinary program output, which may be directed to a terminal, file, pipe, or other destination.
Learn Docker in a Month of Lunches, Second Edition
Standard output is the default output stream through which a process writes ordinary textual results or messages.
- How it is used
- Routes application log entries into Docker's container logging so they can be collected and sent to a central store.
- How deep it goes
- Explains terminal output, Docker's stream capture, retained logs, and a file-to-stdout workaround without developing stream internals.
- Examples
- Demonstrates a timestamp-printing container, detached log retrieval, and a file-logging variant with no visible Docker logs.
- What you can do after
- Diagnose/debug with it by checking `docker logs` and identifying when application logs go to a file instead of stdout.
Read how Learn Docker in a Month of Lunches, Second Edition explains standard output →
Logs and Telemetry
Standard output is the conventional output stream through which a process writes textual data for a receiving terminal, parent process, or redirected destination.
- How it is used
- Positions stdout as an application log stream captured and routed by the execution environment or Fluent Bit.
- How deep it goes
- Explains routing responsibilities and operational trade-offs, while deferring detailed logging-framework treatment.
- Examples
- Demonstrates Fluent Bit stdin capture with a tag and file output, plus FaaS and Kubernetes deployment patterns.
- What you can do after
- Operate/configure stdout capture through Fluent Bit stdin and choose appenders or container logging agents when appropriate.
The Art of Code
Console output is text written to an interactive terminal or standard output and displayed directly to a user or developer.
- How it is used
- Supports development-time debugging by displaying logs directly in a terminal.
- How deep it goes
- Defines direct terminal display and stops short of persistence, aggregation, monitoring, and configurable log routing.
- Examples
- Uses Java exception.printStackTrace, System.out.println, and System.err.println inside a catch block.
- What you can do after
- Diagnose/debug development failures by inspecting messages printed directly to the terminal.
The Well-Grounded Rubyist, Fourth Edition
The standard output stream is the default character stream through which a process writes ordinary textual output.
- How it is used
- Routes ordinary textual output to the terminal by default and supports shell-style redirection through Ruby's standard I/O handles.
- How deep it goes
- Defines STDOUT as an IO object, connects puts and display to it, and stops short of implementation-level stream internals.
- Examples
- Uses puts, display, file redirection, and enumerable IO examples to demonstrate output destinations and stream behavior.
- What you can do after
- Operate/configure standard output by writing with puts or display and redirecting $stdout and $stderr to a file.
Read how The Well-Grounded Rubyist, Fourth Edition explains standard output →
Acing the Certified Kubernetes Administrator Exam, Second Edition
Standard output is the conventional output stream through which a process writes normal textual output.
- How it is used
- Uses stdout as the normal container output stream inspected during Kubernetes troubleshooting.
- How deep it goes
- Defines stdout and demonstrates retrieval with kubectl logs, but defers stream internals and logging configuration.
- Examples
- Shows BusyBox and sidecar containers emitting timestamped messages and exposes their output separately or together.
- What you can do after
- Diagnose container behavior by retrieving selected or aggregated output with kubectl logs.
Kubernetes in Action, Second Edition
Standard output is the conventional output stream through which a process writes ordinary textual results.
- How it is used
- Routes application logs through the container runtime so Kubernetes can retrieve them without knowing application file locations.
- How deep it goes
- Explains stream capture, retrieval, live following, timestamps, and time filtering without detailing runtime internals.
- Examples
- Uses Node.js application startup and request messages retrieved with kubectl logs.
- What you can do after
- Operate/configure it with kubectl logs to retrieve, stream, timestamp, and time-filter container output.
Read how Kubernetes in Action, Second Edition explains standard output →
Related concepts
- putsused by · An output operation that writes data to an I/O stream and normally appends a newline.
- standard errorcontrasts with · Standard error is a process’s conventional output stream for diagnostic and error messages, separate from standard output.
- Dockerused by · Docker is a platform and ecosystem for building, distributing, and running applications in containers.
- monitoringused by · Monitoring is the ongoing observation and measurement of a system’s behavior, state, or operational signals to assess its condition and detect changes or problems.
These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.