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• How can I get the source code for ASTassistant?

  - by cyclotis04

  I'm trying to develop an application similar to ASTassistant, and in the article the author says that he included "the source code with the binaries." After downloading the ZIP folder, however, I've found no source. The program is written in REAL Basic, which I don't know anything about. Do I need to purchase REAL Basic to view ASTassistant's source code, or is it somewhere I haven't looked? Thanks

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• Mac OS date command - getting higher resolution time

  - by Mark

  Hey all, I am trying to use the date command in Terminal on multiple Mac OS X machines that are synced via NTP to synchronize some code in a program. Essentially I am running a program... MyProgram with arguments[date] I can get date to give me the seconds since the Unix epoch with the %M specifier. When I try to use %N to get nanosecond resolution, date just returns N. Is there anyway to get date to give me finer then second resolution? I wouldn't even mind passing two arguments such as (date +%M):arg2 And then converting units in the program. Many thanks in advance! %N specifier listed here: http://en.wikipedia.org/wiki/Date_(Unix)

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• a simple smtp server

  - by fixxxer

  Could you please suggest a simple SMTP server with the very basic APIs(by very basic I mean, to read,write,delete email) that could be run on a linux box? I just need to convert the crux of the email into XML format and FTP it to another machine.

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• In what language was MSDOS originally written in?

  - by nebukadnezzar

  In what language was MSDOS originally written in? The Wikipedia Article implies either C, QBasic or Pascal, but: * C was invented to write UNIX, so I don't believe it was used to write MSDOS * Pascal seems popular to teach programming, but not really popular to write Operating systems in * QBasic didn't seem to be very popular for Operating Systems at the time MSDOS was developed (or was *BASIC ever very popular to write Operating Systems in it?) Except these three languages there is also Assembly, but I assume that Microsoft already switched from Assembly to a "higher" level language? Since C was originally invented for UNIX, I still wouldn't think Microsoft is using C... although the Microsoft API is written in C (I find this kind-of oxymoronic, actually). Can anyone enlighten me on this topic?

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• Best way to choose a random file from a directory in a shell script

  - by jhs

  What is the best way to choose a random file from a directory in a shell script? Here is my solution in Bash but I would be very interested for a more portable (non-GNU) version for use on Unix proper. dir='some/directory' file=`/bin/ls -1 "$dir" | sort --random-sort | head -1` path=`readlink --canonicalize "$dir/$file"` # Converts to full path echo "The randomly-selected file is: $path" Anybody have any other ideas? Edit: lhunath makes a good point about parsing ls. I guess it comes down to whether you want to be portable or not. If you have the GNU findutils and coreutils then you can do: find "$dir" -maxdepth 1 -mindepth 1 -type f -print0 \ | sort --zero-terminated --random-sort \ | sed 's/\d000.*//g/' Whew, that was fun! Also it matches my question better since I said "random file". Honsetly though, these days it's hard to imagine a Unix system deployed out there having GNU installed but not Perl 5.

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• how to limit upload bandwidth per user in linux?

  - by Gihan Lasita

  Can anyone provide the tc command to limit upload bandwidth per user in Debian Lenny? I found that to mark packets per user with iptables I can use the following command iptables -t mangle -A OUTPUT -p tcp -m owner --uid-owner testuser -j MARK --set-mark 500 but I have no idea how to use tc update by running following commands, i managed to limit testuser upload bandwidth to 10Mbit iptables -t mangle -N HTB_OUT iptables -t mangle -I POSTROUTING -j HTB_OUT iptables -t mangle -A HTB_OUT -j MARK --set-mark 30 iptables -t mangle -A HTB_OUT -m owner --uid-owner testuser -j MARK --set-mark 10 tc qdisc replace dev eth0 root handle 1: htb default 30 tc class replace dev eth0 parent 1: classid 1:1 htb rate 10Mbit burst 5k tc class replace dev eth0 parent 1:1 classid 1:10 htb rate 10Mbit ceil 10Mbit tc qdisc replace dev eth0 parent 1:10 handle 10: sfq perturb 10 tc filter add dev eth0 parent 1:0 prio 0 protocol ip handle 10 fw flowid 1:10 now the problem is, i do not want to limit testuser's FTP bandwidth but by running above commands FTP speed also limited to 10Mbit. Regards

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• Check whether a string is a valid filename with Qt

  - by ereOn

  Hi, Is there a way with Qt 4.6 to check if a given QString is a valid filename (or directory name) on the current operating system ? I want to check for the name to be valid, not for the file to exist. Examples: // Some valid names test under_score .dotted-name // Some specific names colon:name // valid under UNIX OSes, but not on Windows what? // valid under UNIX OSes, but still not on Windows How would I achieve this ? Is there some Qt built-in function ? I'd like to avoid creating an empty file, but if there is no other reliable way, I would still like to see how to do it in a "clean" way. Many thanks.

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• 11th grader wants to learn programming... [closed]

  - by bmw0128

  Possible Duplicate: What’s the best way to teach young kids some basic programming concepts? The kid hasn't ever programmed, in or out of school. Any recommendations on a book or two that explains at a very basic level what programming is and how to start to think?

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• Hidden characters inserted after pipe (|) followed by a space

  - by nifty

  Very often, on my Mac, when I use the pipe (|) character followed by a space character, an invincible character will be inserted in between. This is especially annoying when using the terminal, as it makes commands invalid. If I type the following in iterm2, I often get the following: ls | cat zsh: command not found:  cat If I hit the up-arrow-key to get my previous command, and then remove and reinsert the space between | and cat, the command will work. When I copy paste the working and non working commands into a file, like this: non-working: ls | cat working: ls | cat and open it in Hex Fiend it shows the following: non-working: ls |¬†cat working: ls | cat I've also experienced the same kind of issue in SublimeText2 using the square brackets ([]) followed by a space. So I don't believe its an issue with iTerm2.

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• In what language was MSDOS originally written?

  - by nebukadnezzar

  In what language was MSDOS originally written in? The Wikipedia Article implies either C, QBasic or Pascal, but: C was invented to write UNIX, so I don't believe it was used to write MSDOS Pascal seems popular to teach programming, but not really popular to write Operating systems in QBasic didn't seem to be very popular for Operating Systems at the time MSDOS was developed (or was *BASIC ever very popular to write Operating Systems in it?) Except these three languages there is also Assembly, but I assume that Microsoft already switched from Assembly to a "higher" level language? Since C was originally invented for UNIX, I still wouldn't think Microsoft is using C... although the Microsoft API is written in C (I find this kind-of oxymoronic, actually). Can anyone enlighten me on this topic?

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• how do I detect OS X in my .vimrc file, so certain configurations will only apply to OS X?

  - by Brandon

  I use my .vimrc file on my laptop (OS X) and several servers (Solaris & Linux), and could hypothetically someday use it on a Windows box. I know how to detect unix generally, and windows, but how do I detect OS X? (And for that matter, is there a way to distinguish between Linux and Solaris, etc. And is there a list somewhere of all the strings that 'has' can take? My Google-fu turned up nothing.) For instance, I'd use something like this: if has("mac") " open a file in TextMate from vi: " nmap mate :w<CR>:!mate %<CR> elseif has("unix") " do stuff under linux and " elseif has("win32") " do stuff under windows " endif But clearly "mac" is not the right string, nor are any of the others I tried.

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• if statement in aspx page

  - by Brad

  I want to write a basic if statement on my site to display either item 1 or item 2 depending on if a variable is set to true. I am not to familiar with .Net and need a little help with the basic structure of how to get an if statement to work on the aspx page. thank you for your help.

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• Are there any good books to learn C++ if you already know Java and C#

  - by JF LR

  Hi, I would like to know if you have any good books that teach C++ programming without repeating basic stuff. In fact, I already well know Java and C#. I also have a basic knowledge in C and assembly, so I understand a little bit pointer arithmetic, manual memory management and heap based allocation. I was looking at O'Reilly's C++ in a Nutshell and was also wondering if this book would be a good choice. Thank you

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• Tomcat startup.sh doesn't work

  - by OMG Ponies

  I've just installed Tomcat 6.0.20 (per Jira documentation recommendation) on RedHat EL 5 Server, and attempts to use: bin] # ./startup.sh ...result in: Using CATALINA_BASE: /opt/software/jira-tomcat-6.0.20 Using CATALINA_HOME: /opt/software/jira-tomcat-6.0.20 Using CATALINA_TMPDIR: /opt/software/jira-tomcat-6.0.20/temp Using JRE_HOME: /etc/alternatives/jre Usage: catalina.sh ( commands ... ) commands: debug Start Catalina in a debugger ... version What version of tomcat are you running? I've edited the catalina.sh file to add: echo $0 echo $1 ...and I see: catalina.sh start ...etc when I use: ./catalina.sh start Why does catalina.sh not use the parameter?

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• Can FileOutputStream() take a relative path as an argument

  - by Ankur

  I am creating a FileOutputStream object. It takes a file or String as an argument in its constructor. My question is, can I give it a relative URL as an argument for the location of a file, it doesn't seem to work, but I am trying to work out if this is possible at all (if not I will stop trying). If it is not possible, how can I (from a servlet) get the absolute path (on the filesystem, not the logical URL) to the current location in such a way that I can pass that to the constructor. Part of my problem is that my dev box is Windows but I will publish this to a Unix box, so the paths cannot be the same i.e. on Windows C:/.... and on unix /usr/...

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• understanding mount -o bind

  - by Ionut

  Few questions after the following commands: mount -o bind /new_disk/home/user/ /home/user/ mount -o bind --no-mtab /new_disk/home/user/ /home/user/ What is the difference between the two commands other than " Mount without writing in /etc/mtab. This is necessary for example when /etc is on a read-only filesystem." What is the difference between mount -o bind and mount --bind ...if there are Let's suppose i don't know there is a partition mounted using -o bind --no-mtab...where can I find if there is any mound point with bind ? The only way i can detect this is grep user /proc/mounts but in that line there is no info abut bind. Thank you.

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• Script to set "Hide file extensions"

  - by Ickster

  I'm tired of the multi-step process to set my preferred folder options on every server to which I log on (Mostly Win2008, but also some 2012 and Win7 here and there). I'd love to be able to script the process, but unfortunately, I can't find any commands or extensions to do so for folder options. There are several settings I'd like to change, but in particular, I'd like to set "Hide file extensions for known file types" to false. I figure that if I can do that, I'll be able to manage any additional settings on my own. Methods that work on the vanilla command line would be preferred, but if there are commands in PowerShell, I'll use that.

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• List/remove files, with filenames containing string that's "more than a month ago"?

  - by Martin Tóth

  I store some data in files which follow this naming convention: /interesting/data/filename-YYYY-MM-DD-HH-MM How do I look for the ones with date in file name < now - 1 month and delete them? Files may have changed since they were created, so searching according to last modification date is not good. What I'm doing now, is filter-ing them in python: prefix = '/interesting/data/filename-' import commands names = commands.getoutput('ls {0}*'.format(prefix)).splitlines() from datetime import datetime, timedelta all_files = map(lambda name: { 'name': name, 'date': datetime.strptime(name, '{0}%Y-%m-%d-%H-%M'.format(prefix)) }, names) month = datetime.now() - timedelta(days = 30) to_delete = filter(lambda item: item['date'] < month, all_files) import os map(os.remove, to_delete) Is there a (oneliner) bash solution for this?

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• OK Programming language from USB stick with no installation

  - by tovare

  I'm looking for a compiler or interpreter for a language with basic math support and File IO which can be executed directly from a memorystick in either Linux or Windows. Built in functionality for basic datastructures and sorting/searching would be a plus. (I've read about movable python, but it only supports windows) Thank you

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• Selecting keys based on metadata, possible with Amazon S3?

  - by nbv4

  I'm sending files to my S3 bucket that are basically gzipped database dumps. They keys are a human readable date ("2010-05-04.dump"), and along with that, I'm setting a metadata field to the UNIX time of the dump. I want to write a script that retrieve the latest dump from the bucket. That is to say I want the the key with the largest unix time metadata value. Is this possible with Amazon S3, or is this not how S3 is meant to work? I'm using both the command line tool aws, and the python library boto

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• telnet - is there a maximum line limit?

  - by benc

  I am working on several servers that use HTTP for transport of commands. What I have encountered is that some of the commands I am trying to issue by hand are very long GETs, several lines, and that when I telnet from my Mac to my Solaris system, I cannot seem to cut and paste the line successfully. I get a couple bounching sounds (which I assume is a control-g - bell) and then it never pastes everything. From trying to break it up into smaller pieces, I am getting the impression that TELNET, or my bundled telnet client or server has a maximum line length that I had never bumped into. I did some googling and superusering, but did not find anything definitive.

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• Best practices to avoid Jenkins error: sudo: no tty present and no askpass program specified

  - by s g

  When running any sudo command from Jenkins I get the following error: sudo: no tty present and no askpass program specified I understand that I can solve this by adding a NOPASSWD entry to my /etc/sudoers file which will allow user jenkins to run commands without needing a password. I can add an entry like this: %jenkins ALL=(ALL)NOPASSWD:/home/vts_share/test/sudotest.sh ...but this leads to the following issue: how to avoid specifying full path in sudoers file? I can add an entry like this: %jenkins ALL=NOPASSWD: ALL ...but this allows user jenkins to avoid the password prompt for all commands, which seems a bit unsafe. I'm just curious what my options are here, and if there are any best practices I should consider.

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• iphone: unrecognized selector sent to instance

  - by eshalev

  I am new to objective C, So maybe there is some basic thing that I am missing about selectors. I would like to understand the basic concept behind this error as I have not found an general error reference. I am getting this error when using: [CloseButton addTarget:PageContents action:@selector(CloseButtonPressed) forControlEvents:UIControlEventTouchUpInside]; and then later: - (void)CloseButtonPressed:(id)sender{ UIAlertView *someError = [[UIAlertView alloc] initWithTitle: @"Comment" message: @"hello" delegate: self cancelButtonTitle: @"Ok" otherButtonTitles: nil]; [someError show]; [someError release]; }

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• pinvoke to clutter function

  - by trampster

  I'm trying to pinvoke to a clutter function. The function is defined in the docs as ClutterActor * clutter_texture_new_from_actor (ClutterActor *actor); The code I have is as follows: [DllImport ("libclutter-glx-1.0.so.0")] private static extern IntPtr clutter_texture_new_from_file (string filename, IntPtr errorData); And I call it like this: IntPtr texture = clutter_texture_new_from_file("myImage.jpeg",IntPtr.Zero); however when called like this in monodevelop on ubuntu I get the following error. Unix Transport Error Eventally I would like to get the error reporting working so I can get the gerror result however firstly I need to get past the Unix Transport Error.

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• How to get Bash shell history range

  - by Aniti

  How can I get/filter history entries in a specific range? I have a large history file and frequently use history | grep somecommand Now, my memory is pretty bad and I also want to see what else I did around the time I entered the command. For now I do this: get match, say 4992 somecommand, then I do history | grep 49[0-9][0-9] this is usually good enough, but I would much rather do it more precisely, that is see commands from 4972 to 5012, that is 20 commands before and 20 after. I am wondering if there is an easier way? I suspect, a custom script is in order, but perhaps someone else has done something similar before.

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