Remember that ping often uses gethostbyname system/kernel call where traceroute often uses the actual DNS lookup. You can also easily test whether the entries are indeed in DNS by using nslookup or dig
Yes, ping (and traceroute) use gethostbyname() for resolving hostnames. And gethostbyname() goes to /etc/nsswitch.conf that must have the line
to consider first /etc/hosts then DNS.
I'm nearly finished my program i've got everything in place and than when i run it it comes back with the reply mv: command not found. This is the code that seems to be causing the problem.
elif
then
echo "There are more than one '$1' files in the system."
echo "Please... (2 Replies)
Hi.
I just installed the HP-UX 11i V2.
I have problems with CDE - it is inoperative (after logon there is a message box: messaging system failure - or something like that, it asks to check /etc/hosts and network settings).
nslookup works by hostname and IP, hostname shown the correct... (7 Replies)
hi folks,
i've got a blank hp visualize C3000 workstation and installed HP-UX 11.11. When I want to start X, I get the following error message:
# X
Fatal server error:
Couldn't open X pointer device! Is one attached?
I've connected an mouse and a keyboard with an usb/ps2 connector.... (5 Replies)
Hi All,
My current setup is:
1x Windows Server (Windows 2000 server)
1x Unix Server
2x Windows machine
3x Unix Terminals (Hostnames = A, B and C)
Problem
The problem iam having is Unix terminal C cannot be ping across by Unix terminal A or B or Unix server by using the hostname. Unix... (1 Reply)
I recently installed Solaris 10 on my Sun workstation. I cannot ping using hostname from another computer on the same network.
But I can ping using the IP address. Also I can ping other systems using their hostnames.
Can anyone give some information regarding how to resolve this issue. (4 Replies)
Hello everyone
I have a partition with a problem with ping.
If I do a ping by ip for example ping 1.1.1.1 I got no problem but If I ping by hostname for example ping partition1 take almost a minute to respond me.
I have Aix 5.3 and I have another 19 partitions with no problem. The only... (5 Replies)
anyone ever seen this problem:
I can ping the server by IP address but I can't by hostname.
nslookup is working and dns query is ok.
# nslookup mwxnsb24
Server: 10.11.49.206
Address: 10.11.49.206#53
Name: mwxnsb24
Address: 10.10.58.175
# ping... (8 Replies)
Hi.
Here is beginning of my script
#!/usr/local/bin/expect --
set timeout 15
spawn /usr/local/account.sh -n modify
expect "Password:" {send "mypassword\r"}
But due to some terminal control sequences (or something else, dunno exactly) my password prompt is looking like this:
and expect... (3 Replies)
Hello, Unix-forums!
My problem:
read -p "Enter any number, please" number
sleep 1
echo $number | tr -d 0-9
test -z $number && echo "Thank you" || echo "This is not a number"Test always displays "This is not a number". It doesn't matter if I entered a or 1.
But if I order
echo... (2 Replies)
Discussion started by: intelinside
2 Replies
LEARN ABOUT CENTOS
nss-myhostname
NSS-MYHOSTNAME(8) nss-myhostname NSS-MYHOSTNAME(8)NAME
nss-myhostname - Provide hostname resolution for the locally configured system hostname.
SYNOPSIS
nss-myhostname.la
DESCRIPTION
nss-myhostname is a plugin for the GNU Name Service Switch (NSS) functionality of the GNU C Library (glibc) providing hostname resolution
for the locally configured system hostname as returned by gethostname(2). Various software relies on an always-resolvable local hostname.
When using dynamic hostnames, this is usually achieved by patching /etc/hosts at the same time as changing the host name. This however is
not ideal since it requires a writable /etc file system and is fragile because the file might be edited by the administrator at the same
time. nss-myhostname simply returns all locally configured public IP addresses, or, if none are configured, the IPv4 address 127.0.0.2
(which is on the local loopback) and the IPv6 address ::1 (which is the local host) for whatever system hostname is configured locally.
Patching /etc/hosts is thus no longer necessary.
To activate the NSS modules, myhostname has to be added to the line starting with "hosts:" in /etc/nsswitch.conf
It is recommended to put myhostname last in the nsswitch.conf line to make sure that this mapping is only used as fallback, and any DNS or
/etc/hosts based mapping takes precedence.
EXAMPLE
# /etc/nsswitch.conf
passwd: compat
group: compat
shadow: compat
hosts: files dns myhostname
networks: files
protocols: db files
services: db files
ethers: db files
rpc: db files
netgroup: nis
To test, use glibc's getent tool:
$ getent ahosts `hostname`
::1 STREAM omega
::1 DGRAM
::1 RAW
127.0.0.2 STREAM
127.0.0.2 DGRAM
127.0.0.2 RAW
In this case the local hostname is omega.
SEE ALSO systemd(1), systemd-logind.service(8), logind.conf(5), loginctl(1), pam.conf(5), pam.d(5), pam(8), pam_loginuid(8)systemd 208NSS-MYHOSTNAME(8)