CODEWITHSUNDEEP
linuxawkshcpio
Jerome H
Jerome H

Reputation: 36

Calculte checksum of file located in an cpio archive

I have a kernel file located inside a cpio archive and I would like to calculate it's sha256sum. For that I redirected the archive output to the standard output and piped through sha256sum. I get the sum by using awk.

KERNEL_CHECKSUM=$(cpio --to-stdout -i kernel.fat16 < archive.cpio | sha256sum | awk '{print $1}')

This command works when it runs on a terminal. When run as a script, the checksum is not correctly calculated.

I suspect something related with the standard output but was unable to find the issue.

Upvotes: 0

Views: 365

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