sfdisk Goodies

Just some quickies for today.

Copy a partition table from one disk to another

# sfdisk -d /dev/sda | sfdisk /dev/sdb

or

# sfdisk -d /dev/sdc > partition_table.out  
# cat partition_table.out | sfdisk /dev/sdc

Get the size of a disk

# /sbin/sfdisk -s /dev/sdf

And finally the coolest part.

Partition a disk for linux without specifying a size (making 1 big partition).

# echo L | sfdisk /dev/sdf

You can do something similar to make multiple partitions but I'll leave that up to you and some googling.

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Benjamin Cane
Principal Engineer, Vice President

Benjamin Cane is Principal Engineer at American Express. He has more than 16 years of experience with roles in both systems and software engineering. He leverages both his systems and software skills to build end-to-end platforms. Platforms, purpose built for performance and resiliency. Benjamin is also the author of Red Hat Enterprise Linux - Troubleshooting Guide (2015, Packt Publishing), and he has published many popular articles on topics such as Linux, Docker, Python, Go and Performance Tuning. Thoughts and Opinions expressed in my articles are my own.

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