What this snippet does
flock -n skips the run instead of stacking a second copy on a slow job.
Why practise typing this
Typing cron & scheduling code builds muscle memory for the symbols and indentation Linux uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Linux practice
- Editing your crontabCron & Scheduling · beginner
- Cron schedule fieldsCron & Scheduling · intermediate
- Cron has a minimal PATHCron & Scheduling · intermediate
- Scheduling a one-off jobCron & Scheduling · intermediate
- System-wide cron jobsCron & Scheduling · intermediate
- Listing files in detailFiles & Directories · beginner