Programming :: Perl : Display All Variables In Use In Memory?

Jul 30, 2010

I have a large body of code (2000+ lines at this point) with lots of global variables, and a handful of locals. I would like to know is there a way to print out all global variables in use at a particular moment in time either from the debugger (ideally) or in line?

Basically I have something like this for the menu

1. Do thing 1
2. Do thing 2
3. Do thing 3
4. Do thing 1 and 2
5. Do thing 1 and 3
6. Do thing 1, 2 and 3

The problem is, as you select something from the menu again after you finish an option, the globals are still set and I'd like to clear them. If I had a list of all of them, it be easy to copy and paste and set them before the program ran another entry again. Suggestions? I'm aware of reset [a-z], but all of my vars are uppercase, and I would upset INC, and other upper case built-ins.

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Programming :: Sudo Perl Script With Environment Variables?

Apr 22, 2009

How to use sudo to run a perl script with the environment variable JAVA_HOME on linux?
Running testenv.pl as sudo do not pickup the environment variable JAVA_HOME
value. code...

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Programming :: Want To Pass Variables To Perl Script From Php Script

Jun 11, 2010

I'm using perl script from php. I wanted to pass parameters to perl script from php and also return value from perl script to php. I don't no how to do it.

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Fedora :: X11 DISPLAY Variables And Firefox 3.6?

Mar 31, 2011

I have an elementary question: how can I determine the X11 addresses of my two displays? I am using an ATI card that splits the video signal into two VGA signals which correspond to two displays. I'd like to open one Firefox profile on one display and a second Firefox profile on the other display. So

Firefox --display=:0.0 -P Profile1
Firefox --display=?? -P Profile2

Currently :0.0 opens Firefox in the display my terminal is showing on. I figure there is a linux command to help me determine which X11 addresses are available to me but I haven't come across it yet.

[Code]...

I'd like to have one Firefox window open up on DVI-0 and a second Firefox window open up on DVI-1.

This would be very useful for me. It would mean that I could use 1 PC rather than 2 PCs for these two Firefox windows that I will eventually display on separate TVs.

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Programming :: Memory Leaks - Glibc Detected - ./SuffixTree: Malloc() - Memory Corruption - 0x00

Mar 21, 2011

I am new to C and linux. My code below does arbitary writes but I cant figure out where or how it does it.

I am calling the insertNode() function with seq = 'MISSISSPPI$' and alphabets = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ$'

Code:

Weird behaviour I should mention is that when I check for NULL pointer in node->child[index], the unassigned values are not null anymore, they point to arbitary memory.

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Programming :: Write A Script That Can Show Me Total Memory Vs Used Memory?

Apr 13, 2010

How do I write a script for my Linux that can show me total memory vs used memory and have it email me results if it's over 70 percent?

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Programming :: SHM Memory Counted As Cache Memory With Kernel 2.6.18?

Aug 25, 2010

Is that possible that SHM shared memory is counted as cache memory on Linux with kernel 2.6.18?If find it really odd since this memory is not file backed, but I have a piece of code that loads data using shm_open+mmap, and it generates an amount of cache memory in /proc/meminfo that corresponds exactly to the amount of shared memory (I load that data from a file but I am using posix_fadvise(fd,0,0,POSIX_FADV_DONTNEED) to ensure this file is not cached and I made sure that it is working as expected). As far as I know SHM memory was not tagged as cache memory with kernel 2.6.9.If it is the case it is really unfortunate since normally cache memory can be considered to be part of the "available" memory since it can be flushed promptly but this is clearly not the case with SHM memory... Is there an easy way to get the total amount of used SHM memory on a system?

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General :: Display AWK Output In Perl

Feb 8, 2011

I am trying to use awk command in perl. Below is my awk comamnd which works alone.
awk '{Easttot=Easttot+$1} END {print Easttot}' MessagesProcessedEAST2Cnts.dat
I would like to use this awk's output in shell script. I am using system command like below to get the out put. But it is not working.
$Output = system("awk '{Easttot=Easttot+$1} END {print Easttot}' MessagesProcessedEAST2Cnts.dat'");

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Programming :: Define All Variables In Tcl Programming In A File For Instance Var.cfg?

Apr 27, 2010

I can define all variables in tcl programming in a file for instance var.cfgand source the same file in my tcl script such assource var.cfgIs this possible in perl too?

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Software :: Store The Return Value Of $DISPLAY Into Perl Script?

Jul 21, 2011

I want to store the return value of $DISPLAY into my perl script. I am new in perl script echo $DISPLAY

how could i make it?

#! /apps/perl/bin/perl
$session = `echo $DISPLAY`;
print "$session
";
but nothing come out

[Code]...

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Software :: Apache Run Perl Then Create Index Page And Display It

Sep 15, 2010

I've got a perl script which generates an html file. What I'd really like to do is send people to just one page (the perl page) which then generates the html and shows the html page in question. Thus the whole transition will be invisible to the user, they'll just have an html page.FYI the perl script generates a list of the users who last logged in to the system, it needs to be up to date (by the second).Let me know if this isn't clear, I understand it sounds a bit confusing...

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Ubuntu :: Run Top And Display The Virtual Memory?

Mar 18, 2011

What command would I use with Top to sort what is displayed when typing top to see the virual memory in a vm? So I am currently running ubunut 10.10 in a vm and I want to run top and display the virtual memory, what sort command would I include with top?

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Debian :: Incorrect RAM Memory Display ?

Aug 14, 2009

I have this issue, with Lenny 2.6.26-2-486, that the Gnome 2.22.3 System Monitor displays only 885.0 MiB of the total 2048 memory I have installed on my system.

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Programming :: Setting Variables In C-shell?

Jul 12, 2010

I'm running into a problem when I try to set a variable to an awk output in c-shell. Right now my command is Code: set STR_MSG_TYPE = `awk -F{ '/msg_type/ {print $2}' <filename> | tr -d }'/''*' ` I then run echo to see what the output is and it returns blank, however, when I run the same awk command from the command line, I get an actual output of "MT-715". Am I setting my variable incorrectly? I do something similar using the date command to set a STR_DATE variable earlier in the code and it works fine and I use the same syntax.

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Programming :: C With Gcc: Are All Variables Defined Like Pointers

Sep 13, 2010

i'm practicing in very basic c programs using the gcc compiler.I found that when i create two variables let's say

Code:

int a,b and Code: a=15;
b=3;
a=b;
b--;

then a equals 2.I thought that this isn't normal in C isn't it?I haven't had the time to read the gcc documentation yet...so i think it has something to do with my compiler's default settings.I use the

Code: gcc filename.c -o filename command to compile

Are all variables defined like pointers?

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Programming :: How To Check For Empty Variables In PHP

Apr 26, 2010

I want to check if a MySQL db query will return an empty result - I first do this:

$query="SELECT * from <whatever" ;
$result=mysql_query($query) ;
$row=mysql_fetch_row($result) ;

Now how do I check if $row is empty or not? Will $row="" do the trick?

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Programming :: Get List Of Variables Of Particular Type ?

Jun 13, 2011

I have a C header file which have arrays of predefined(known) structure type. But i dont have names of arrays and their size. when i include that file and compile my application, i want to know the names and sizesof those arrays.

purpose of application is to get the content of those arrays and to explain it in descriptive words instead of hex numbers.ofcourse this can be done by file pointers and reading also with out header file inclusion, but as i am working in C, once compiled, those variables are in my address space in i include header file.

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Programming :: Passing Variables By Reference?

Mar 19, 2010

I was trying to make a code for passing variables by reference..here's the code:

#include<iostream>
using namespace std;
void fun(int& ,int& );
int main(){

[Code].....

invalid initialization of non-const reference of type 'int&' from a temporary of type 'int*'

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Programming :: PHP Accessing Variables Within Array

Mar 30, 2011

I am pretty new to PHP so excuse my dumbness. I've searched this up in quite a few places and cant find anything : Basically, I've made an array, within it are 3 more arrays. Their are two values in each array, 'Name' and 'Age'. Basically I am using a While statement to try and cycle through the 'age' value of my array and state whether or not the person is eligible. (I am actually just learning so I'm doing this to just test myself).

Here is my code
Code:
<?php
$people =array(
array('name' => 'Bob', 'age' => 15 ),
array('name' => 'Jhon' , 'age' => 10),
array('name' => 'Sue' , 'age' => 7));
//($value =& $people[0,1,2][age] );

Here was an attempt to try and create a reference to age, I tried it many different ways
while($age < 10) {
echo ('$name, is eligible') ; } ?>

Okay, so I tried to do this through two ways, one way I tried to create a reference to age, then evaluate it, without that line of code their would be no reference, which way is correct, why wont it work? I am using Xammp, so when I launch local host I get an undefined variable error. What To Do?

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Programming :: PHP - How To Parse Data Into Variables

Apr 17, 2011

My php knowledge is very poor (only worked with strings so far), and I am faced which a task that is a real challenge for me: I have a variable, that contains data of different type, in this order: byte, byte, string, string, string, string, short, byte, byte, byte, byte, byte, byte, byte, string.

Strings are of variable length. How could this data be parsed into variables of the right type, and then all converted to strings? What are the functions to use? Strings are unicode ones, and they are delimited by "

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Programming :: PHP Sessions Variables Are Not Persistent

Jan 10, 2010

I just created a website in PHP and tested on my own webserver. All of my session variables worked great. Today I uploaded it to my commercial server host and it does not remember the session vars from one page to the next. Here is the session section of phpinfo().

Code:
session
Session Support enabled
Registered save handlers files user sqlite
Registered serializer handlers php php_binary wddx
DirectiveLocal ValueMaster Value
session.auto_startOffOff
session.bug_compat_42OnOn
session.bug_compat_warnOnOn
session.cache_expire180180
session.cache_limiternocachenocache
session.cookie_domainno valueno value
session.cookie_httponlyOffOff
session.cookie_lifetime00
session.cookie_path//
session.cookie_secureOffOff
session.entropy_fileno valueno value
session.entropy_length00
session.gc_divisor100100
session.gc_maxlifetime14401440
session.gc_probability11
session.hash_bits_per_character44
session.hash_function00
session.namePHPSESSIDPHPSESSID
session.referer_checkno valueno value
session.save_handlerfilesfiles
session.save_path/tmp/tmp
session.serialize_handlerphpphp
session.use_cookiesOnOn
session.use_only_cookiesOffOff
session.use_trans_sid00

You can see that session.save_path is set to /tmp, which is the default on the shared server. /tmp does exist in my document root directory.

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Programming :: Usage Of The Session Variables In Php

Jan 13, 2010

Im a fresher in PHP.Actually i wanted to know that whether there will be time delay while using session variables in PHP.By using some 10-20 session variables in my code will it affect the speed of the loading of the page.If so then can u suuggest any other method to pass the varaibles which will not slow down the speed?

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Programming :: Script Not Exporting Variables?

Jun 7, 2011

I have sles 10 . A user has a default shell of tcsh. I want to run a script which has to use ksh . In that script only some variables are exported, which will be used in subsequent scripts which are called inside it.

But the variables are not exported. I am unable to find whether its a conflict of shell or what ?? I tried with debug mode, it only displays the command but not execute anyone ..

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Programming :: Searching The Files Using Variables?

May 18, 2011

I have a file that contains 5 fields and anothen one with two I want to take the value from user and search file1 and if the value exists then write in file2 to the $2 to the line that $1=value

file 1
1:fsdfsd:g:33:fsdf
2:yytgdcf:a:3:sgd

[code]....

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Programming :: Shell - Substition Of Variables?

Mar 22, 2011

i have following code :

Code:
TMPDIR=`mktemp -d`
mkdir $TMPDIR/old/

[code]...

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Programming :: Best Way To Include Variables In String Using C

Feb 26, 2009

What's the best way to include variables in a string using C,i.e if i want to do the following query in C, how would i do that.How do i build the string variable up in C?

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Programming :: Using Environment Variables In Scripts?

Jun 19, 2010

Trying to mounts three cifs shares at boot up. I want to mount the shares under three different sub directories in the user's home directory:

share 1 mounted to /home/(insert username here)/movies
share 2 mounted to /home/(insert username here)/music
share 3 mounted to home/(insert username here)/software

I would like to use the environment variable HOME to dynamically build the mount point parameter. I've tried:

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Programming :: Variables With Spaces In Remote Ssh?

Nov 22, 2010

I'm writing something which takes user input (which may or may not contain spaces...) and then runs a command on a remote system via ssh. However the remote command does not work. I can't print the exact code so I'll just provide an equivelenat problem. This needs to work with filenames which do and do not contain spaces.

Code:
FILES=`ls`
echo "Specify a file"
echo "$FILES"
echo -n "File name: "
read $FILES
ssh root@127.0.0.1 "ls $FILES"

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General :: Display The Memory Usage Of Each Process If I Do A 'ps -ef'?

Jan 29, 2010

In linux, how can I display memory usage of each process if i do a 'ps -ef'?I would like to the 'virtual memory', 'res memory', 'shared memory' of each progress. I can get that via 'top', but I want the same info in 'ps -ef ' so that I can pipe the output to 'grep {my process name}'.

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Programming :: Using Grep / Variables In Bash Script

May 10, 2010

I'm trying to write a bash script and I'm having trouble with it.I have a list of DNS entires from a file called zoneExport.txt.Than I want to parse a log file to see if that DNS entry has been queried for. So I'm running a grep command and trying to save it into a variable. What I'm looking for is a variable ($varGrepQ) that has the number of matches for the grep query. I will then run this through an if statement and do some things from there..

But my problem right now is with this grep query. It keeps outputting '0' even when I know there are records in that file and when I run the same query on the command line I get the actual count. My thought is that the $record variable is not passing right.

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