exec command

In the world of programming and system administration, logging is a critical aspect of monitoring and diagnosing the operations performed by scripts and applications. A "write-ahead log" is a technique used primarily to ensure data integrity, whereby log entries are written before any changes or commands that alter the state of the system are executed. This approach is crucial in scenarios where recovery and reliability are essential. In this article, we'll explore how to implement a simple write-ahead log mechanism in a Linux Bash script using redirection (exec >>$LOG) and synchronization (sync).