Tools › Server & DevOps
🖥️
Server & DevOps tools
Schedules, permissions and everyday sysadmin helpers.
⏱️
Cron Expression ExplainerUnderstand a cron schedule and see the next run times.
🔐
Chmod CalculatorConvert Linux file permissions between octal and symbolic.
🎭
Umask CalculatorWork out the default file and directory permissions for a umask.
📶
File Transfer Time CalculatorHow long a download or upload takes at a given speed.
💾
Data Size ConverterConvert bytes, KB, MB, GB, TB and KiB, MiB, GiB.
📈
Uptime / SLA Downtime CalculatorHow much downtime does 99.9% availability allow?
🗄️
RAID Capacity CalculatorUsable capacity and fault tolerance for RAID 0, 1, 5, 6 and 10.