Error In A Variable

System Info:

I have normal user in CentOS 7 whose name is "mostafa" (the name of the account).

I naturally have another user called root with all privileges. User "mostafa" is put into sudoers file, too.

The OS is installed in VmWare, so the system is all mine.

Problem:

Now I create a file with touch file.sh and put a command in it, but when I want to run it with Code:

sudo ./file.sh

, an error is shown that the command Code:

./file.sh

does not exist. But if I Code:

 sudo chmod 777 ./file.sh

then it gets run. My question is that, why should I use Code:

chmod 777

when I myself have created the file, and I am in sudoers.

Can anyone explain me why shuold I still use Code:

sudo chmod 777

when the creator of the file is me.

Hi, I've just recently installed MySQL connector/c from source code on my Slackware 14.1 x64

I read the official instructions of the connector but I felt a bit disorientated when I read:
Code:

1 -Change location to the top-level directory of the source distribution.

I interpreted that I have to go to the "highest" directory Code:

/

So I wrote: Code:

 
        #                            cd /

root@- /#                            tar xzvf /home/normal/Downloads/mysql-connector-c-6.1.6-src.tar.gz 

root@- /#                            cd /mysql-connector-c-6.1.6-src/

root@- /mysql-connector-c-6.1.6-src# cmake -G "Unix Makefiles"

root@- /mysql-connector-c-6.1.6-src# make 

root@- /mysql-connector-c-6.1.6-src# make install

Then I did:
Code:

ln -s /usr/local/mysql-5.6.25/include /usr/include

But when I try to compile a program in c with #include <mysql.h> i get this error:
Code:

# gcc ctemp.c 
In file included from ctemp.c:2:0:
/usr/include/mysql.h:57:27: fatal error: mysql_version.h: No such file or directory
 #include "mysql_version.h"
                           ^

What can I do? Thanks a lot and sorry for poor english

PD: If you need the official instructions I paste here the link: https://dev.mysql.com/doc/connector-...on-source.html

Hi all,

Been reading on stdin, stdout and stderr and encounter 2 questions, hope gurus here can advise.

0 = stdin
1 = stdout
2 = stderr

Code:

Sun Dec 21 03:53:42 SGT 2014 > cat test5.sh
#!/bin/bash

echo "Please enter value for name :"
read name
echo "Your name is $name."

echo "Next echo will be a syntax error"
ehco

Code:

Sun Dec 21 03:53:46 SGT 2014 > test5.sh 1> output.txt 2> error.txt
Noob

Sun Dec 21 03:54:56 SGT 2014 > cat output.txt
Please enter value for name :
Your name is Noob.
Next echo will be a syntax error

Sun Dec 21 03:55:23 SGT 2014 > cat error.txt
/home/alan/scripts/test5.sh: line 8: ehco: command not found
Sun Dec 21 03:55:26 SGT 2014 >

Which so far all is good and the correct way to output everything including error to a single file is

Code:

Sun Dec 21 03:59:14 SGT 2014 > test5.sh > output.txt 2>&1

Q1) How is a command being interpreted in linux , the sequence in which it is interpreted ? from left to right ? right to left ?

Shouldn't it be

Code:

test5.sh 2>&1 1>output.txt 
or 
test5.sh 2>&1>output.txt ?

Regards,
Noob

https://code.google.com/p/wavelet1d/...ar.gz&can=2&q=

The above link is where I downloaded *.cpp(s) and the libraries.

If you "untar" the package, in "examples" directory, there are some demonstration files. What I wanted to do was to make an executable file out of "wavedemo1.cpp".

I modified the code in "wavedemo1.cpp"; Code:

#include "wavelet2d.h"

to Code:

#include "wavelet2s.h"

, then placed the header file "wavelet2s.h" (from /wavelib/src/linuxstatic) and the modified "wavedemo1.cpp" into my working directory.

Inside the working directory, I ran the following command

Code:

gcc -L/home/mario/wavelet/wavelib/linuxstatic -lwavelet2s wavedemo1.cpp -o wavedemo1

Then I get the following error messages.

/usr/bin/ld: skipping incompatible /home/mario/wavelet/wavelib/linuxstatic/libwavelet2s.a when searching for -lwavelet2s
/usr/bin/ld: cannot find -lwavelet2s
collect2: error: ld returned 1 exit status

I'm not sure what went wrong with my approach. This is my first time trying to use libraries on linux and it's giving me really tough times.

I would appreciate your help, please let me know if you need more details to explain things.

Thanks.

Hi, I need some help. I tried to install obs-ns. It´s based on ns2, but when I ran "make", the problem below appears... please I wish anybody would help me.


This is the error:

Code:

OBS/ns-2/integrated_agent.h: In constructor `BurstManager::BurstManager()':
OBS/ns-2/integrated_agent.h:86: warning: `BurstManager::bt_' will be initialized after
OBS/ns-2/integrated_agent.h:84: warning:   `int BurstManager::currburstsize_'
OBS/ns-2/integrated_agent.cc:66: warning:   when initialized here
OBS/ns-2/integrated_agent.cc: In member function `int BurstManager::nhops(nsaddr_t, nsaddr_t)':
OBS/ns-2/integrated_agent.cc:81: error: invalid conversion from `const char*' to `char*'   <------- this is the error 
OBS/ns-2/integrated_agent.cc: In member function `virtual void IPKTAgent::recv(Packet*, Handler*)':
OBS/ns-2/integrated_agent.cc:180: warning: unused variable 'ipkth'
/root/OBS/ns-allinone-2.31/tclcl-1.19/tclcl.h:150: error: `void Tcl::error(const char*)' is private
OBS/ns-2/integrated_agent.cc:185: error: within this context
OBS/ns-2/integrated_agent.cc:155: warning: unused variable 'hdr'
OBS/ns-2/integrated_agent.cc: In member function `void IPKTAgent::deBurst(Packet*)':
OBS/ns-2/integrated_agent.cc:192: warning: unused variable 'hdrip'
OBS/ns-2/integrated_agent.cc:194: warning: unused variable 'ch'
make: *** [OBS/ns-2/integrated_agent.o] Error 1

And this is the code of the program...


Code:

int BurstManager::nhops(nsaddr_t src,nsaddr_t des) {
  Tcl& tcl = Tcl::instance();
  sprintf(tcl.buffer(),"$ns nhops %d %d",src,des);
  tcl.eval();
  char *ni = tcl.result();   <------this is the line 81 
  return atoi(ni);
}

I have CentOS 7 64 bit. I have installed open-vm-tools on it.
I have installed vmplayer using
Code:

./VMware-Player-6.0.1-1379776.x86_64.bundle

Now when I try to open vmplayer on it, it does not load 'Virtual Network Device'
and shows error in terminal
Code:

Failed to build vmnet.  Failed to execute the build command.

When I check status of vmware, it shows
Code:

Module vmnet not loaded

If I try to run
Code:

vmware-modconfig --console --install-all

It gives me following error.
Code:

make: Leaving directory `/tmp/modconfig-2NfFeS/vmnet-only'
Unable to install all modules.

I am not able to open VMplayer, please help me to open it.

Thanks

--Kind Regards
Sam

I have some variables which have stored numerical values like
Quote:
A1=10 A2=20 A3=25
B1=10 B2=15 B3=12 and so on
As well as another set of variables which stored these variables like
Quote:
var1=A1 var2=A2 var3=A3
var4=B1 var5=B2 var6=B3 and so on
I have to calculated things using second set of variable.
In the script, there is line
Code:

read number

user will enter number manually, suppose 500
I have to calculate using
Code:

expr 500 \* ${$var1} / 100

and output of this multiplied by
Code:

expr $above_output \* ${$var2} /100

and output of this multiplied by
Code:

expr $above_output \* ${$var3} /100

But not able to deal with two levels of variable. The calculation will be hard when it comes for three level and four level.

Please help.

Code:

PREFIX=192.168.1
OCTET=1
while [ $OCTET -lt "255" ]; do
    echo -en "Pinging ${PREFIX}.${OCTET}..."
    ping -c1 -w1 ${PREFIX}.${OCTET} > /dev/null 2>&1
    if [ "$?" -eq "0" ]; then
       echo "OK"
    else
       echo "Failed"
    fi
    let OCTET=$OCTET+1
done

My question is, in the penultimate line, why is it OCTET, and not $OCTET, with a dollar before it, meaning, the variable?

What if it were written:
Code:

let $OCTET=$OCTET+1

Like in C++ (I think) or Python or whatever?

I have installed phpmyadmin , when access http://192.1010.118.0/phpmyadmin ,it pops the error

Code:

Forbidden

You don't have permission to access /phpmyadmin on this server.

I check the phpmyadmin.conf , I have released "allow all" to all directory .

I also check the /var/log/httpd/error_log, it have the following error , I tried change all files permission to 777 but still not work , would advise what is wrong in my server ? thanks

Code:

[authz_co error] [pid 2525] [client 192.1010.118.0:51878] AH01630: client denied by server configuration: /usr/share/phpMyAdmin

Hi

I just got a vps server and i try to run apt-get update and i got this:

Code:

-bash: apt-get: command not found

Any ideas how to fix it?

Even if i try manual to install it i am getting:

Code:

configu  error: cannot run /bin/sh buildlib/config.sub

dpkg also missing and gcc compiler ....

Thanks