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Zorluk: OrtaBasic Scripting Languages and Constructs

An IT technician is creating a shell script to clean up outdated log files automatically. Arrange the following scripting statements and constructs in the correct logical execution sequence from first to last.

  1. 1Initialize environment variables for the log directory path and maximum file age limit.
  2. 2Evaluate a conditional statement (IF/THEN) to verify that the target log directory exists.
  3. 3Execute a loop construct (FOR/FOREACH) to iterate through all log files matching the target age criteria.
  4. 4Print a completion status message to the console and exit the script.

Cevap

The correct logical order begins with defining environment variables, followed by evaluating a conditional statement for directory existence, running a loop construct to iterate through old files, and finally outputting a completion message.
Structured script execution follows a mandatory logic sequence: variable declaration sets up parameters, conditional statements validate execution requirements, repetition loops perform automated tasks over target sets, and output logging summarizes results.

Adım Adım Çözüm

1
Define script parameters and environment variables.
Path and age thresholds are initialized for use throughout the script execution.
Referencing undefined variables causes script runtime errors or unexpected behavior.
2
Perform pre-execution validation using a conditional branch construct (IF check).
Script verifies the specified directory is accessible.
Prevents the script from attempting file operations on missing or invalid directory paths.
3
Iterate through files using a loop construct (FOR or FOREACH).
Each log file exceeding the specified age parameter is processed sequentially.
Loops enable repeating operations across multiple collection items without repeating code.
4
Output execution summary and exit.
The administrator receives confirmation that the script completed execution.
Provides visibility into script execution status.

Anahtar Kavram

Script Execution Logic and Control Constructs
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