[Solved] Identify the error in this Raspberry Pi log rotation script snippet:logfile="/var/log/app.log" backup="/var/log/app.... | Raspberry Pi

Raspberry Pi - Data Logging and Databases

Identify the error in this Raspberry Pi log rotation script snippet:

logfile="/var/log/app.log"
backup="/var/log/app.log-$(date +%Y%m%d)"

mv $logfile $backup
> $logfile
find /var/log -type f -mtime 7 -delete

AThe find command should use -mtime +7 to delete files older than 7 days

BThe mv command syntax is incorrect

CThe > $logfile line should be before mv command

DThe backup filename format is invalid

Step-by-Step Solution

Solution:

Step 1: Check the find command usage
The find command uses -mtime 7 which matches files exactly 7 days old, not older than 7 days.
Step 2: Correct the find command
To delete files older than 7 days, use -mtime +7 instead of -mtime 7.
Final Answer:
The find command should use -mtime +7 to delete files older than 7 days -> Option A
Quick Check:
find -mtime +7 deletes older files [OK]

Quick Trick: Use + before days in -mtime to delete older files [OK]

Common Mistakes:

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