Terminal Command Error.

Hi all,
i am new to linux, i am using Centos 6. There is some problem in the network settings as i am able to browse internet from a browser but when i am trying to use the terminal (using ping command) for any of the website (say www.google.com) nothing is happening. suppose i want to install some software (like hdf5), when i am using "sudo yum install hdf5" it shows large number of error massages like "error could not connect to the host". It would be a great help if someone provide the solution.
Thanks in advance.

Durgesh

Hi everyone (i hope this is the right section)

Im trying to install the RT patch preempt_rt 3.18.9 im running Ubuntu 14.04 with kernel v 3.16

i installed the rt patch "patch-3.18.9-rt5.patch" and also a new kernel "3.18.9" i patched the patch file with

patch -p1 < patch-3.18.9.patch

but there is somthing i don't know about linking folders of old kernel and new kernel, i searched about it and found

rm -rf linux && ln -s /usr/src/linux-3.18.9 linux && cd /usr/src/linux

then

make oldconfig

then

make menuconfig

i selected Full preemptive kernel then

make

then this error

cc1: some warnings being treated as errors make[2]: * [kernel/locking/locktorture.o] Error 1 make[1]: * [kernel/locking] Error 2 make: *** [kernel] Error 2


So..... Any help?? can someone walk me through this

or any other real time patch, Thanx.. plzzzzzz

hello sir,
i was trying to install ns2.33 in ubuntu10.04. i have followed the procedure. in which after the validation there was a command to creat a symlink. the command was, $sudo ln -s/home/neha/ns-allinone-2.33/ns-2.33/ns/usr/bin/ns.
i m tried this command all the way asa much asa possible. but an error has been arrived. the error is "ln: invalid option '/' ". please help me to solve this problem.

I installed ns2 using (sudo apt-get install ns2)
I hav code for black hole attack in aodv manet and while trying to run it on ns2 Im getting the fallowing error message
please tell me how to fix this..??

INITIALIZE THE LIST xListHead

(_o58 cmd line 1)
invoked from within
"_o58 cmd addr"
invoked from within
"catch "$self cmd $args" ret"
invoked from within
"if [catch "$self cmd $args" ret] {
set cls [$self info class]
global errorInfo
set savedInfo $errorInfo
error "error when calling class $cls: $args" $..."
(procedure "_o58" line 2)
(SplitObject unknown line 2)
invoked from within
"_o58 addr"
("eval" body line 1)
invoked from within
"eval $node addr $args"
("default" arm line 2)
invoked from within
"switch -exact $routingAgent_ {
DSDV {
set ragent [$self create-dsdv-agent $node]
}
DSR {
$self at 0.0 "$node start-dsr"
}
AODV {
set ragent [$self cre..."
(procedure "_o3" line 14)
(Simulator create-wireless-node line 14)
invoked from within
"_o3 create-wireless-node"
("eval" body line 1)
invoked from within
"eval $self create-wireless-node $args"
(procedure "_o3" line 23)
(Simulator node line 23)
invoked from within
"$ns node"
invoked from within
"set node_(2) [$ns node]"
(file "atk3.tcl" line 55)

Hey,
please find attached the code
I got this error :
can't read "mac_(0)": no such variable
while executing
"subst $[subst $var]"
(procedure "_o112" line 5)
(SplitObject set line 5)
invoked from within
"$iface2 set mac_(0)"
invoked from within
"set tmp2 [$iface2 set mac_(0)] "
(file "umts.tcl" line 319)




can anyone help to solve the error??

Hi,
I am new in linux. I have following problem while running the codes of TORA in ns-2.35 in ubuntu.Can you please help me?


num_nodes is set 6
INITIALIZE THE LIST xListHead

(_o22 cmd line 1)
invoked from within
"_o22 cmd port-dmux _o37"
invoked from within
"catch "$self cmd $args" ret"
invoked from within
"if [catch "$self cmd $args" ret] {
set cls [$self info class]
global errorInfo
set savedInfo $errorInfo
error "error when calling class $cls: $args" $..."
(procedure "_o22" line 2)
(SplitObject unknown line 2)
invoked from within
"$agent port-dmux $dmux_"
(procedure "_o19" line 11)
(Node/MobileNode add-target-rtagent line 11)
invoked from within
"$self add-target-rtagent $agent $port"
(procedure "_o19" line 28)
(Node/MobileNode add-target line 28)
invoked from within
"$self add-target $agent $port"
(procedure "_o19" line 15)
(Node attach line 15)
invoked from within
"$node attach $ragent [Node set rtagent_port_]"
(procedure "_o3" line 85)
(Simulator create-wireless-node line 85)
invoked from within
"_o3 create-wireless-node"
("eval" body line 1)
invoked from within
"eval $self create-wireless-node $args"
(procedure "_o3" line 23)
(Simulator node line 23)
invoked from within
"$ns node"
invoked from within
"set n(0) [$ns node]"
(file "tora2.tcl" line 115)

Hi Everyone
i m working on ns2.35 ubuntu 12.04
when i follow these steps for olsr patching
all commands ran without error

cd ns-allinone-2.35/ns-2.35/
tar zxvf um-olsr-1.0.tgz
ln -s ./um-olsr-1.0 ./um-olsr
patch -p1 < um-olsr/um-olsr_ns-2.35_v1.0.patch

but while running the olsr.tcl
it again shows the same error
invalid command name "Agent/OLSR"
while executing
"Agent/OLSR set use_mac_ true"
(file "olsr.tcl" line 38)
please help me , thnx in advance

Ubuntu 12.04

I installed updates, which included a new kernel. I went to remove one of the older kernels and got:

Code:

jnojr@DEV:~$ sudo apt-get purge linux-image-3.13.0-46-generic
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  linux-headers-3.13.0-46-generic gir1.2-ubuntuoneui-3.0 wireless-regdb iw
  linux-headers-3.13.0-46 crda linux-headers-3.5.0-23-generic lesstif2
  linux-headers-3.5.0-23 libubuntuoneui-3.0-1 thunderbird-globalmenu
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  linux-image-3.13.0-46-generic*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 197 MB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 340656 files and directories currently installed.)
Removing linux-image-3.13.0-46-generic ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.13.0-46-generic /boot/vmlinuz-3.13.0-46-generic
update-initramfs: Deleting /boot/initrd.img-3.13.0-46-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.13.0-46-generic /boot/vmlinuz-3.13.0-46-generic
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.13.0-51-generic
Found initrd image: /boot/initrd.img-3.13.0-51-generic
Found linux image: /boot/vmlinuz-3.13.0-49-generic
Found initrd image: /boot/initrd.img-3.13.0-49-generic
Found linux image: /boot/vmlinuz-3.13.0-48-generic
Found initrd image: /boot/initrd.img-3.13.0-48-generic
Found Windows Vista (loader) on /dev/sda1
Found CentOS release 6.6 (Final) on /dev/sdb1
Found linux image: /boot/vmlinuz-3.13.0-51-generic
Found initrd image: /boot/initrd.img-3.13.0-51-generic
Found linux image: /boot/vmlinuz-3.13.0-49-generic
Found initrd image: /boot/initrd.img-3.13.0-49-generic
Found linux image: /boot/vmlinuz-3.13.0-48-generic
Found initrd image: /boot/initrd.img-3.13.0-48-generic
Found Windows Vista (loader) on /dev/sda1
Found CentOS release 6.6 (Final) on /dev/sdb1
Found memtest86+ image: /boot/memtest86+.bin
error: syntax error.
error: Incorrect command.
error: syntax error.
error: Incorrect command.
error: syntax error.
error: line no: 146
Syntax errors are detected in generated GRUB config file.
Ensure that there are no errors in /etc/default/grub
and /etc/grub.d/* files or please file a bug report with
/boot/grub/grub.cfg.new file attached.
done
Purging configuration files for linux-image-3.13.0-46-generic ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.13.0-46-generic /boot/vmlinuz-3.13.0-46-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.13.0-46-generic /boot/vmlinuz-3.13.0-46-generic

I have no idea how I'd "ensure there are no errors" in the /etc/grub related files... I have no idea what's supposed to be there. Looking at the line it's complaining about in /boot/grub/grub.cfg.new doesn't tell me anything. How do i find out what it's unhappy about?

Hi!
I wrote a script shell about changing IP of the httpd.conf from text file and saving a new httpd.conf file for all IPs in the text file. The code is below, Im using mremote on windows (RHEL Release 5.7), and getting this error:
./script1.sh: line 19: syntax error: unexpected end of file

Please help me about that error. Thanks!

(ps: line 19 is the last line in the code => done < "$filename" )

#!/bin/bash

DATE='date +%Y%m%d_%H:%M:%S'
NAME=httpd_ip_change
EXTENSION=conf
max=10

filename="$1"
while read -r line

for ((i=2; i<=$max; ++i ))

do
touch $NAME$i.$EXTENSION.$DATE

sed "s/<VirtualHost 10.11.92.81:80>/$line/g" ./httpd.conf > $NAME$i.$EXTENSION.$DATE

done < "$filename"

hello everyone.,
i am using linux Centos 6 machine, i have downloaded "back in time" through command line.
but i dont know how to install "back in time" from the command line.
i found some commands but that for UBUNTU and not running on Centos 6, giving error.
so , without GUI. can be possible to install and use it?????

thanks in advance..