__NR_dup           45 arch/x86/include/generated/uapi/asm/unistd_32.h #define __NR_dup 41
__NR_dup           36 arch/x86/include/generated/uapi/asm/unistd_64.h #define __NR_dup 32
__NR_dup           31 arch/x86/include/generated/uapi/asm/unistd_x32.h #define __NR_dup (__X32_SYSCALL_BIT + 32)