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.
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...
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.
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
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.
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.
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?
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'");
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?
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...
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?
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.
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 $2}' <filename> | tr -d }'/''*' ` I then run echo to see what the output is and it returns blank, however, when I run the same awk command from the command line, I get an actual output of "MT-715". Am I setting my variable incorrectly? I do something similar using the date command to set a STR_DATE variable earlier in the code and it works fine and I use the same syntax.
i'm practicing in very basic c programs using the gcc compiler.I found that when i create two variables let's say
Code:
int a,b and Code: a=15; b=3; a=b; b--;
then a equals 2.I thought that this isn't normal in C isn't it?I haven't had the time to read the gcc documentation yet...so i think it has something to do with my compiler's default settings.I use the
Code: gcc filename.c -o filename command to compile
I have a C header file which have arrays of predefined(known) structure type. But i dont have names of arrays and their size. when i include that file and compile my application, i want to know the names and sizesof those arrays.
purpose of application is to get the content of those arrays and to explain it in descriptive words instead of hex numbers.ofcourse this can be done by file pointers and reading also with out header file inclusion, but as i am working in C, once compiled, those variables are in my address space in i include header file.
I am pretty new to PHP so excuse my dumbness. I've searched this up in quite a few places and cant find anything : Basically, I've made an array, within it are 3 more arrays. Their are two values in each array, 'Name' and 'Age'. Basically I am using a While statement to try and cycle through the 'age' value of my array and state whether or not the person is eligible. (I am actually just learning so I'm doing this to just test myself).
Here was an attempt to try and create a reference to age, I tried it many different ways while($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?
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 "
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.
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?
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 ..
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 $1=value
What's the best way to include variables in a string using C,i.e if i want to do the following query in C, how would i do that.How do i build the string variable up in C?
I'm writing something which takes user input (which may or may not contain spaces...) and then runs a command on a remote system via ssh. However the remote command does not work. I can't print the exact code so I'll just provide an equivelenat problem. This needs to work with filenames which do and do not contain spaces.
In linux, how can I display memory usage of each process if i do a 'ps -ef'?I would like to the 'virtual memory', 'res memory', 'shared memory' of each progress. I can get that via 'top', but I want the same info in 'ps -ef ' so that I can pipe the output to 'grep {my process name}'.
I'm trying to write a bash script and I'm having trouble with it.I have a list of DNS entires from a file called zoneExport.txt.Than I want to parse a log file to see if that DNS entry has been queried for. So I'm running a grep command and trying to save it into a variable. What I'm looking for is a variable ($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.
