You want to save only the last 50 commands to your history file and discard older ones automatically. Which approach achieves this?

hard📝 Application Q9 of 15

Linux CLI - Environment and Configuration

ADelete ~/.bash_history manually every time

BRun <code>history -w</code> after every command

CSet <code>HISTSIZE=50</code> and <code>HISTFILESIZE=50</code> in your shell config

DUse <code>history -c</code> every 50 commands

Step-by-Step Solution

Solution:

Step 1: Understand history size variables
HISTSIZE controls how many commands are kept in memory; HISTFILESIZE controls how many are saved to file.
Step 2: Set both to 50 to limit history length
This ensures only last 50 commands are saved and remembered.
Step 3: Evaluate other options
history -w writes current history to file but doesn't limit size; history -c clears all history; manual deletion is inefficient.
Final Answer:
Set HISTSIZE=50 and HISTFILESIZE=50 in your shell config -> Option C
Quick Check:
Limit history size with HISTSIZE and HISTFILESIZE [OK]

Quick Trick: Configure HISTSIZE and HISTFILESIZE to limit history length [OK]

Common Mistakes:

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