To list the contents of a directory with times using style, we need to choose any of the below two methods. List the contents of a directory with time using various time styles. This hypothesis seems to match up with the evidence pretty well.īut I'd really like to get an authoritative answer on the subject. 10 Useful ‘ls’ Command Interview Questions Part 2. And then as servers started getting wiser, nslookup -ls stopped working, and then eventually that useless code got ripped out of distributions. Here is an example of the output of the ls command: -rw-r-r- 1 root root 0 Apr 12 13:14 file1.txt. The output of the ls command can be confusing, but with a little practice, it is easy to read. Still, my educated guess is that nslookup -ls just sends a raw AXFR query to the remote nameserver, which will initiate a zone transfer if and only if the remote nameserver is dumb enough to respond to unsolicited, unauthorized AXFRs originating from random machines on the Internet. The ls command is used to list files in the Linux terminal. (And it's not implemented in the version of nslookup on my MacBook.) They also don't say anything suggestive about troubleshooting, like, "If nslookup -ls is showing no results, check to make sure your name server is configured to respond to unauthorized AXFR messages." Lists information for a Domain Name System (DNS) domain.Īll of my references ("DNS and Bind", Microsoft, random web pages) seem to be very coy about how nslookup -ls actually works. In particular, they keep mentioning nslookup -ls as a way to "pull a copy of a zone." Microsoft's docs also say: I've been going through the 4th Edition (2001, yes, very old) of the O'Reilly "DNS and Bind" book, and it keeps talking about nslookup, which seems to be relatively hard to get one's hands on in this decade.
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