Perharps, i have to extract 172.16.65.35 from the variable iphost ?
Thank you so much for help.
Best Regards.
This cannot possibly work without a semicolon before the echo statement. To illustrate, replace let's replace the whole command substitution
with a simple assignment
What is going on here? The assignment to iphost is done local to the echo command. But that is never used by echo, since it does not use this variable. What remains is that it gets passed the result of the variable expansion of $iphost by the shell, which is the empty string. So in fact an empty line is printed.
So the only way this would produce any output would be if the variable happens to contain a value from a previous assignment, the fields resulting to the variable expansion are then passed to the echo command which then prints it..
So in order to make any of the is work you need to use a semicolon or a newline to separate commands:
It is best to put double quotes around $iphost
Last edited by Scrutinizer; 07-23-2015 at 07:11 PM..
With such a long line i would go for a new line
A good example for the local assignment is
In fact an environment is set for the command; basename is searched in /bin and /usr/bin
I have below command to check for error logs from last 24 hours from the file : /var/log/messages/ The command is working fine on the local host.
sudo awk -F - -vDT="$(date --date="24 hours ago" "+%b %_d %H:%M:%S")" ' DT < $1' /var/log/messages | egrep -i "error|fail"
I want to run the... (8 Replies)
Hi,
I have a weird problem.
when ever I do ping command like for example
ping unix.comI get the following message:
# ping unix.com
ping: unknown host unix.com
but when I use host the computer is able to know the host.
# host unix.com
unix.com has address 81.17.242.186
unix.com mail is... (2 Replies)
hi guys
I have standalone Suse 10 SP3 that when I run
# hostname
webserver
but when I run host command
# host webserver
;; connection timed out; no servers could be reached
I would like to get the IP when I issue
host webserver
x.x.x.x
and the name when
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Hi,
My script needs to check whether the remote host is up or not.
If it is up i need to start few servers in that host or else just a notification should be sent that the remote host is down?
Could someone help me out in this?
Regards
Arun (4 Replies)
How do i get only the IP part from a host call.
For example in my script i put
#!/bin/sh -
#
# @(#)daily.local Tim Golding
#
# Back up
server_ip=`host roadhaulage.com`
echo $server_ip
This echos the following
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