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 Forum index » Off-Topic Area » Programming
kernel version in a .conf file: what does ^ mean?
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anikin

Joined: 10 May 2012
Posts: 969

PostPosted: Wed 01 Nov 2017, 12:48    Post subject:  kernel version in a .conf file: what does ^ mean?  

Help needed with this line in a .conf file:
Code:
BUILD_EXCLUSIVE_KERNEL="^4.13.*"
I understand the * part - any future minor versions like 4.13.10-01. I'm not sure about the preceding ^ part - does it mean any (earlier) kernel version, or exclusively kernel 4, like 4.9?

Thank you in advance.
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musher0


Joined: 04 Jan 2009
Posts: 11295
Location: Gatineau (Qc), Canada

PostPosted: Wed 01 Nov 2017, 13:06    Post subject:  

The ^ Is regular expression code meaning: "the 4 has to be the first thing in the string".
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Last edited by musher0 on Wed 01 Nov 2017, 15:22; edited 1 time in total
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anikin

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PostPosted: Wed 01 Nov 2017, 15:06    Post subject:  

Thanks a lot, musher0.
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musher0


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PostPosted: Wed 01 Nov 2017, 15:22    Post subject:  

My pleasure.
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"Logical entities must not be multiplied beyond necessity." | |
« Il ne faut pas multiplier les entités logiques sans nécessité. » (Ockham)
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