I need help with ADB plz

Hello everyone,

when i run an adb command for example :

Code:

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adb shell

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it gives me :

Code:

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Android@Galaxy-s:/ $

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what i need is changing the Android@Galaxy-s to whatever i want

i know it's possible since i saw some devices has people's names written there

can anyone tell me what to do or what apk i need to modify in order to get it done ?