General :: What Does /etc/hosts Specifying In Particular Line
Jul 2, 2010
I'm doing a how-to to setup my debian server. It tells me to edit /etc/hosts to look like this (with different IPs and hostnames of course)
Code:
127.0.0.1 localhost.localdomain localhost
192.168.0.100 server1.example.com server1
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
I'm curious about that second line. I know it'll be my actual server ip, but what does it specify? what is the 'server1' at the end of the line specifying? I *think* that 'server1' would be part of my bash prompt when i login, but am not sure. Is it used for anything else?
I'm trying to use ssh-keyscan to get some known_host file population going on, but I have a ton of hosts I want to scan, all with multiple aliases in /etc/hosts. Is there a way to use my current /etc/hosts file to do an ssh-keyscan instead of making a special list of hosts that (from what I've read) ssh-keyscan needs?
Well, as many proxy applications, GNOME Network Proxy Preferences only allow to ignore hosts. What I want to do is exactly the opposite. I only want to use the proxy for few sites. Is it possible to define only the allowed hosts in any way?
PS: I know FoxyProxy add-on for Firefox does this, but 1)I don't use Firefox and 2)I want the proxy settings system wide not only for browser.
Probably an easy (which means stoopid) question...I am trying to reroute a website using my hosts file so that it matches my servers certificate file for testing without effect dns and the live site.When I went to edit my /etc/hosts file it is non-existent. I have, I am assuming in it's place, hosts.allow and hosts.deny. Can anyone explain why I do not have a hosts file?
I am doing a Linux installation. I installed the system fine and am trying to change the vi /etc/hosts file. I have edited the file but am not sure how to save it. I have --INSERT-- showing at the bottom.
I have a requirement to implement SSH Services in a way, oracle user should be disallowed from everywhere other then one host. While no restrictions for other users.
I worked with DenyUsers, but it disallow oracle logins from all hosts.
I have several files with many lines something like this:
I'm trying to write a script that will count the number of characters per line that doesn't contain a ">" symbol and give me an average of those values. I have most of the script together but I can't figure out how to connect some of the steps.
I am trying to write a script that takes an input file ($FileName) and an intermediate file ($FileName.info) and removes lines from $FileName if the value in $2 of $FileName.info is <75.
I can't figure out how to feed only one line of the .info file to the if statement at a time so that it will perceive it as an integer instead of a list.
The error I am getting now is ./script.sh: line 6: [: : integer expression expected
I've written a script to parse a file and print each line that ends with matching pattern, if the next line is blank. The pattern lines are the result of md5sum $i|sed 's/path///g' so that only md5 and filename appear. Here's what I'm using.
Quote: for fline in `sed -n '/.*.ext$/p' file1` do if [ "`sed -n -e '/'"$fline"'/ {n; p;}' file1`" == "" ] then echo ""$fline" has no info" >>file2 fi done [Code]....
I am combining data from a couple different input files and creating an output file in a specific format. I notice that if I use the >> operator, information gets appended to a new line in my output file. This is useful, but if I'd like to append onto the CURRENT line, is there an easy way to do this? I've been googling around and see lots of complicated answers, nothing that suggests to me an easy way to do this. For example, if my output file looks like this:
b1a:] cat test hello my name is b1a:]
and I'd simply like to append "Bob", how can I do it? If I use
b1a:] echo Bob >> test b1a:] cat test b1a:] hello my name is Bob b1a:]
So what I would prefer is some command that would create the result:
I need to grep for a particular string and if found need to display the line containing that string, the line above that and also the first line of that paragraph.
Can this be done via sed.
Eg, My Paragraphs
OA connectA
Enclosure:
Interconnect Module #6 Status:
Here, if I grep for Critical, it should display the following
Similarly if I grep for Degraded, it should display
Some time throughout the night last night eth0 stopped working entirely, I could not resolve dns or any thing. Oddly though eth0:1 and eth0:2 worked perfectly with a ping -c 10 -I eth0:2 xxx.xxx.xxx.xxx but still could not resolve domain names. My nameservers are good as i have tested them on my other machine. My setup had been working fine for quitte some time and i did not make any changes besides updating webpages, it is a server running Debian Lenny. Unfortunatly since eth0:1 was working for the most part i was trying to change the IP's in the config and accidentally killed the settings using webmin so I cant post to many details at the moment until my host for the dedicated gets my /etc/network/interfaces restored but in the meantime i have searched all over google to try to find an answer to the original problem but cannot so i would like to prepared for when the server is accessible again.
I am trying to setup a basic file server, but seem to be stuck with the editing of the allow.hosts file. I installed the latest Debian, and when I try to edit it, and then save, it says I dont have permissions.
As a sidenote, I dont mean to belittle linux or start a debate, I am behind the whole open source/free software thing, but every time I say to myself, "okay, time to give Linux another chance", I cant believe how difficult it is to do even the most simplist of tasks. No wonder MS is still on top. If only one could do it ALL from a GUI.
I am very new to Linux, 1 week old. Have just installed fedora 5 days ago and I now need to get hosts to connect to this server through telnet. I downloaded a xinetd rmp file but do not know what do next to get it installed and configure it.
I have to do several scripts and I have no idea of how to do this one: Make a script that read line by line the passwd file and prints in console.Hope you understand couse my english isso bad as you can see.Our teacher told us something like this:#!/bin/bashwhile read line doecho $lineadone < dispositiveexit
I have a dataset (see example below) that I would like to go through and copy all lines containing a certain string ("LGIG") plus the line immediately following that line to a new file. I have no problem grepping lines containing the string LGIG but I'm lost how to translate that to line number and shift up one line number for each instance of that string.
I am using xterm and sometimes when typing long commands into a small window, the command extends beyond the end of the line. On my old uni setup, when this happens, the cursor moves to the line below and you can see what text you have typed above however on my slack 13 setup, it overwrites the current line so you cannot see what you have typed! How can I set xterm to move onto the next line instead of overtyping?
I have setup Denyhosts to run on my server, and have been using it succesfully for the last few weeks, to allow me to ssh into my server from my home dev machine.
This morning, I accidentally typed my password incorrectly three times - and ended up being locked out of the system (tghat was ok, because that was what was supposed to happen). I logged into the server via another way and took the following actions (in the order given)
/etc/init.d/ssh stop /etc/init.d/denyhosts stop removed my IP address from /etc/hosts.deny /etc/init.d/ssh start
