There's NO string like "reached" in your samples, nor semicolons. Those don't show up in my host calls, either. Replace ! /^Host/ with /domain/ or /name/ or /pointer/. If that doesn't help, show your input data.
cat is by no means needed in any of your attempts as both grep and cut can open files by themselves, or you can redirect stdin for them. grepping the first number is quite easy, like
, but extracting the remote hostname not so as you don't know what the FQDN looks like. The nearest I get is
Yes you are right. it's my fault. There somes lines that i didn't see in the original file, like ";; connection timed out; no servers could be reached"
I am trying to cat a file and then grep that file for a number. I can do it fine on other files but this particular file will not do anything. I tried running it on an older file from the same device but it is just not working. The file is nothing more than a flat file on a unix box. Here is just a... (3 Replies)
Hi,
This is what I am trying to do.
1) connect to 3 remote servers from my local machine
serverA serverB serverC
2) read error file from each server
cat /var/lib/mysql/mydb.err
3) grep for lines displaying "yesterday" date
grep "`date +%y%m%d' '-d\"1 day ago\"`"
4) Append those lines to a... (7 Replies)
Hi,
Im a pretty large noob to linux/perl etc and im trying to use mysql slurp to take a delimited file and import it into mysql using stdin (in the hope its faster)
mysqlslurp - slurp <STDIN> into a MySQL table - search.cpan.org
Christopher Brown / MySQL-Slurp - search.cpan.org
Using... (3 Replies)
Hi All,
I'd like to do this
cat /etc/passwd
and grep -v on the /etc/shells list
I'd like to find all shell that doesn't exist on the /etc/passwd.
Is there an easy way without doing a egrep -v "/bin/sh|/bin/bash................"?
How do I use a file /etc/shells as my list for... (4 Replies)
I am not sure if using cat -n is the most efficient way to split a file into multiple files, one file per line in the source file.
I thought using cat -n would make it easy to process the file because it produces an output that numbers each line that I could then grep for with the regex "^ *$i".... (3 Replies)
Is there a way using grep or cat a file to create a new file based on whether the first 9 positions of each record is less than 399999999?
This is a fixed file format. (3 Replies)
not sure how to do it. wan't to delete it using cut and grep ince i would use it in the shell.
but how must the command be?
grep "64.233.181.103 wwwGoogle.com" /etc/hosts | cut -d
the delimeter is just a space. can you help meplease. :D (1 Reply)
Hello,
i need to search one word (snp1) from many files and copy the content of the columns of this word in new file.
example:
file 1:
SNP BP CHR P
snp1 1 3 0.01
snp2 2 2 0.05
.
.
file 2:
SNP BP CHR P
snp1 1 3 0.06
snp2 2 2 0.3
output... (6 Replies)
Hello
someone told me to use
OS=`awk '{print int($3)}' < /etc/redhat-release`
instead of
OS=cat /etc/redhat-release | `awk '{print int($3)}'`
any idea for the reason ? (5 Replies)
Hi Guys
This is my first post so I am not sure how things go here. I'm sorry if I'm breaking the rule or something. Feel free to correct me about that :)
So as I was saying...
I'd been trying to grep this folder containing 900,000 txt files but seems no luck. I get either "No such file... (6 Replies)
Discussion started by: Nexeu
6 Replies
LEARN ABOUT REDHAT
ypdomainname
HOSTNAME(1) Linux Programmer's Manual HOSTNAME(1)NAME
hostname - show or set the system's host name
domainname - show or set the system's NIS/YP domain name
dnsdomainname - show the system's DNS domain name
nisdomainname - show or set system's NIS/YP domain name
ypdomainname - show or set the system's NIS/YP domain name
nodename - show or set the system's DECnet node name
SYNOPSIS
hostname [-v] [-a] [--alias] [-d] [--domain] [-f] [--fqdn] [-i] [--ip-address] [--long] [-s] [--short] [-y] [--yp] [--nis] [-n] [--node]
hostname [-v] [-F filename] [--file filename] [hostname]
domainname [-v] [-F filename] [--file filename] [name]
nodename [-v] [-F filename] [--file filename] [name]
hostname [-v] [-h] [--help] [-V] [--version]
dnsdomainname [-v]
nisdomainname [-v]
ypdomainname [-v]
DESCRIPTION
Hostname is the program that is used to either set or display the current host, domain or node name of the system. These names are used by
many of the networking programs to identify the machine. The domain name is also used by NIS/YP.
GET NAME
When called without any arguments, the program displays the current names:
hostname will print the name of the system as returned by the gethostname(2) function.
domainname, nisdomainname, ypdomainname will print the name of the system as returned by the getdomainname(2) function. This is also known
as the YP/NIS domain name of the system.
nodename will print the DECnet node name of the system as returned by the getnodename(2) function.
dnsdomainname will print the domain part of the FQDN (Fully Qualified Domain Name). The complete FQDN of the system is returned with host-
name --fqdn.
SET NAME
When called with one argument or with the --file option, the commands set the host name, the NIS/YP domain name or the node name.
Note, that only the super-user can change the names.
It is not possible to set the FQDN or the DNS domain name with the dnsdomainname command (see THE FQDN below).
The host name is usually set once at system startup in /etc/rc.d/rc.inet1 or /etc/init.d/boot (normally by reading the contents of a file
which contains the host name, e.g. /etc/hostname).
THE FQDN
You can't change the FQDN (as returned by hostname --fqdn) or the DNS domain name (as returned by dnsdomainname) with this command. The
FQDN of the system is the name that the resolver(3) returns for the host name.
Technically: The FQDN is the name gethostbyname(2) returns for the host name returned by gethostname(2). The DNS domain name is the part
after the first dot.
Therefore it depends on the configuration (usually in /etc/host.conf) how you can change it. Usually (if the hosts file is parsed before
DNS or NIS) you can change it in /etc/hosts.
OPTIONS -a, --alias
Display the alias name of the host (if used).
-d, --domain
Display the name of the DNS domain. Don't use the command domainname to get the DNS domain name because it will show the NIS domain
name and not the DNS domain name. Use dnsdomainname instead.
-F, --file filename
Read the host name from the specified file. Comments (lines starting with a `#') are ignored.
-f, --fqdn, --long
Display the FQDN (Fully Qualified Domain Name). A FQDN consists of a short host name and the DNS domain name. Unless you are using
bind or NIS for host lookups you can change the FQDN and the DNS domain name (which is part of the FQDN) in the /etc/hosts file.
-h, --help
Print a usage message and exit.
-i, --ip-address
Display the IP address(es) of the host.
-n, --node
Display the DECnet node name. If a parameter is given (or --file name ) the root can also set a new node name.
-s, --short
Display the short host name. This is the host name cut at the first dot.
-V, --version
Print version information on standard output and exit successfully.
-v, --verbose
Be verbose and tell what's going on.
-y, --yp, --nis
Display the NIS domain name. If a parameter is given (or --file name ) then root can also set a new NIS domain.
FILES
/etc/hosts
AUTHOR
Peter Tobias, <tobias@et-inf.fho-emden.de>
Bernd Eckenfels, <net-tools@lina.inka.de> (NIS and manpage).
Steve Whitehouse, <SteveW@ACM.org> (DECnet support and manpage).
net-tools 28 Jan 1996 HOSTNAME(1)