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Top Forums UNIX for Dummies Questions & Answers Need to check all virtual hostnames/virtual IP's Post 302264923 by otheus on Friday 5th of December 2008 06:51:04 AM
Old 12-05-2008
What is a "virtual hostname". Do you mean all virtual IPs and their associated hostnames? In Linux, there are two ways to make a virtual IP: ifconfig and "ip addr".
Code:
ifconfig -a | grep "^ *inet addr:"
ip addr | grep "^ *inet "

Then use awk or sed or whatever to extract the IPs and for each one, send through something like "getent":
Code:
cat list-of-ips | while read ip; do getent hosts $ip; done

 

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IS_KSEG_VA(9r)															    IS_KSEG_VA(9r)

NAME
IS_KSEG_VA, IS_SEG0_VA, IS_SEG1_VA - General: Determine if the specified address is located in the kernel-unmapped address space, the user- mapped address space, and the kernel-mapped address space. SYNOPSIS
void IS_KSEG_VA( unsigned long addr ); void IS_SEG0_VA( unsigned long addr ); void IS_SEG1_VA( unsigned long addr ); ARGUMENTS
Specifies the virtual address. DESCRIPTION
The IS_KSEG_VA routine determines if the specified address is located in the kernel-unmapped address space. The IS_SEG0_VA routine deter- mines if the specified address is located in the user-mapped address space. The IS_SEG1_VA routine determines if the specified address is located in the kernel-mapped address space. RETURN VALUES
None EXAMPLE
The following code fragment shows a call to IS_KSEG_VA: . . . caddr_t virt_addr; [1] unsigned phys_addr; [2] . . . if(IS_KSEG_VA(virt_addr)) { [3] phys_addr = KSEG_TO_PHYS(virt_addr); [4] . . . Declares a variable to store the user buffer's virtual address. Declares a variable to store the physical address returned by KSEG_TO_PHYS. Before calling KSEG_TO_PHYS, calls IS_KSEG_VA to determine if the virtual address is from the kernel-unmapped address space. If the virtual address is from the kernel-unmapped address space, then calls KSEG_TO_PHYS to convert the address to a corresponding physi- cal address. SEE ALSO
Routines: KSEG_TO_PHYS(9r), PHYS_TO_KSEG(9r) IS_KSEG_VA(9r)
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