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system console device file

 
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singvey
Frequent Advisor

system console device file

/dev/console
/dev/syscon
/dev/systty

why the system has 3 system console device file?
what is the difference about them?
when to use which one
2 REPLIES 2
marie-noelle jeanson_1
Trusted Contributor
Solution

Re: system console device file

Hi,

/dev/systty is the physical system console

/dev/syscon is the logical system console terminal used in the single-user level.

/dev/console provides a termio interface to the device configured as the system console.

See console(7) and init(1m) for more details,

Marie-Noelle
singvey
Frequent Advisor

Re: system console device file

thank you