Is there a faster implementation of uuidgen from bash?

Question

I am using a bash script and using the command uuidgen to generate UUIDs. However it is quite slow when invoked in a loop. Are there any alternatives I can invoke directly from bash?

I'm guessing the slowness is actually just invoking and stopping the process each loop iteration, not necessary uuidgen being slow code itself.

score 1 · Accepted Answer · answered Jul 25 '22 at 06:58

1

cat /proc/sys/kernel/random/uuid command uses the kernel UUID generator to generate random UUIDs.

It still has the invocation delay, but the generation itself is likely faster.

answered Jul 25 '22 at 06:58

Tero Kilkanen

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`cat: /proc/sys/kernel/random/uuid: No such file or directory` – Justin Jul 26 '22 at 15:56
What is your environment? – Tero Kilkanen Jul 26 '22 at 16:34
Needs to work across `osx` as well as `debian/ubuntu`. – Justin Jul 27 '22 at 17:39
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OK, this solution only works on Linux. I don't know if MacOS has a similar random generator available. – Tero Kilkanen Jul 27 '22 at 18:28

Is there a faster implementation of uuidgen from bash?

1 Answers1