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  • How can I (from a script) add something to the zsh command history?

    - by Brandon
    I'd like to be able to look through my command history and know the context from which I issued various commands--in other words, "what directory was I in?" There are various ways I could achieve this, but all of them (that I can think of) would require manipulating the zsh history to add (for instance) a commented line with the result of $(pwd). (I could create functions named cd & pushd & popd etc, or I could use zsh's preexec() function and maybe its periodic() function to add the comment line at most every X seconds, just before I issue a command, or perhaps there's some other way.) The problem is, I don't want to directly manipulate the history file and bypass the shell's history mechanism, but I can't figure out a way (with the fc command, for instance) to add something to the history without actually typing it on the command line. How could I do this?

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  • How to interrupt a waiting C++0x thread?

    - by doublep
    I'm considering to use C++0x threads in my application instead of Boost threads. However, I'm not sure how to reimplement what I have with standard C++0x threads since they don't seem to have an interrupt() method. My current setup is: a master thread that manages work; several worker threads that carry out master's commands. Workers call wait() on at least two different condition variables. Master has a "timed out" state: in this case it tells all workers to stop and give whatever result they got by then. With Boost threads master just uses interrupt_all() on a thread group, which causes workers to stop waiting. In case they are not waiting at the moment, master also sets a bool flag which workers check periodically. However, in C++0x std::thread I don't see any replacement for interrupt(). Do I miss something? If not, how can I implement the above scheme so that workers cannot just sleep forever?

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  • How to write syntax highlighting? c++

    - by ML
    Hi All, I am embarking on some learning and I want to write my own syntax highlighting for files in C++. Can anyone give me ideas on how to go about doing this? To me it seems that when a file is opened: 1. it would need to be parsed and decided what type of source file it is. Trusting the extension might not be full-proof a way to know what keywords/commands apply to what language a way to decide what color each keyword/command gets I want to do this on OS X, C++ or Objective-C Can anyone provide pointers on how I might get started with this?

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  • Is there a way to set up a Linux pipe to non-buffering or line-buffering?

    - by ern0
    My program is controlling an external application on Linux, passing in input commands via a pipe to the external applications stdin, and reading output result via a pipe from the external applications stdout. The problem is that writes to pipes are buffered by block, and not by line, and therefore delays occur before my app receives data output by the external application. The external application cannot be altered to add explicit fflush() calls. When I set the external application to /bin/cat -n (it echoes back the input, with line numbers added), it works correctly, it seems, cat flushes after each line. The only way to force the external application to flush, is sending exit command to it; as it receives the command, it flushes, and all the answers appears on the stdout, just before exiting. I'm pretty sure, that Unix pipes are appropiate solution for that kind of interprocess communication (pseudo server-client), but maybe I'm wrong. (I've just copied some text from a similar question: Force another program's standard output to be unbuffered using Python)

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  • Selectively parsing log files using Java

    - by GPX
    I have to parse a big bunch of log files, which are in the following format. SOME SQL STATEMENT/QUERY DB20000I The SQL command completed successfully. SOME OTHER SQL STATEMENT/QUERY DB21034E The command was processed as an SQL statement because it was not a valid Command Line Processor command. EDIT 1: The first 3 lines (including a blank line) indicate an SQL statement executed successfully, while the next three show the statement and the exception it caused. darioo's reply below, suggesting the use of grep instead of Java, works beautifully for a single line SQL statement. EDIT 2: However, the SQL statement/query might not be a single line, necessarily. Sometimes it is a big CREATE PROCEDURE...END PROCEDURE block. Can this problem be overcome using only Unix commands too? Now I need to parse through the entire log file and pick all occurrences of the pair of (SQL statement + error) and write them in a separate file. Please show me how to do this!

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  • Get information about a function in python, looking at source code

    - by Werner
    Hi, the following code comes from the matplotlib gallery: #!/usr/bin/env python from pylab import * x = array([10, 8, 13, 9, 11, 14, 6, 4, 12, 7, 5]) y = array([8.04, 6.95, 7.58, 8.81, 8.33, 9.96, 7.24, 4.26, 10.84, 4.82, 5.68]) I am new to python, and would like to change the content of x and y from an input file. I have two short questions: I could guess what array means, but once I see it on the code, how can I know to which library it belongs and more information about it? Should I use some kind of python debug commands? How do I insert the content of my input file into x? Thanks

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  • Create directory using rake in windows

    - by intern
    We were trying to run fllowing code in rake file: directory "tmp" file "hello.tmp" => "tmp" do sh "echo 'Hello' >> 'tmp/hello.tmp'" end We have taken this code from http://jasonseifer.com/2010/04/06/rake-tutorial But, since we are working on windows commands like'sh','echo' wont work.. according to the explanation given for the above code, it should first create a directory 'tmp' and then create a file 'hello.tmp' which will have 'hello' as its text.. Firstly, how can we do this for windows? and Secondly, a file with extension '.tmp' sounds quite wierd.. what does 'hello.tmp' specifies? Does it simply mean that 'hello.tmp' is a text file in 'tmp' directory?

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  • qmake translations doesn't seem to work

    - by gordebak
    I have a Qt app with a Czech translation. I can get my translation compiled and installed fine with the following code. But when I run the app, translation doesn't work. What am I missing? I even tried to chmod 644 to change the permissions of the translation file, but it didn't work either. Thanks in advance. TRANSLATIONS += cs_CZ.ts isEmpty(QMAKE_LRELEASE) { win32|os2:QMAKE_LRELEASE = $$[QT_INSTALL_BINS]\lrelease.exe else:QMAKE_LRELEASE = $$[QT_INSTALL_BINS]/lrelease unix { !exists($$QMAKE_LRELEASE) { QMAKE_LRELEASE = lrelease-qt4 } } else { !exists($$QMAKE_LRELEASE) { QMAKE_LRELEASE = lrelease } } } updateqm.input = TRANSLATIONS updateqm.output = qm/${QMAKE_FILE_BASE}.qm updateqm.commands = $$QMAKE_LRELEASE -silent ${QMAKE_FILE_IN} -q qm/${QMAKE_FILE_BASE}.qm updateqm.CONFIG += no_link target_predeps QMAKE_EXTRA_COMPILERS += updateqm INSTALLS += translations translations.path = /usr/share/app translations.files = qm/cs_CZ.qm

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  • Cascading Dropdown Listboxes with Selenium

    - by Jon
    I am having great difficultly testing cascading dropdown boxes with Selenium. I would like to know what the standard approach is for this. I'm a bit unclear as to which commands to use i.e. ClickAndWait, WaitForTextPresent etc. It seems a little bit of a hack to try and get this to work. Has anyone got selenium to correctly test this out? An example scenario would be to have 3 listboxes which have Car Make, Model and Colour. Each one is populated in turn by the other. Selenium needs to somehow wait for the next listbox to populate before preceeding with the test.

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  • ncurses - expect: sleep executes at wrong time

    - by rahul
    I have some ncurses apps that I need to automate to test repeatedly. I am placing the "sleep" command between "send" commands. However, what i see is that all the sleep's are executed in the beginning before the screen loads. expect concatenates the sends (I see that at the screen bottom during sleep) then issues them together. I have tried sending all keys with "send -s" or "send -h". That marginally helps. I've replaced "-f" on line 1 with "-b" - again a tiny difference. Why isn't "sleep" pausing at the right time. Incidentally, my programs have a getc() loop, so i can't use "expect" command. I tried that too. #!/usr/bin/expect -f spawn ruby testsplit.rb #expect set send_human {3 3 5 5 7} set send_slow {10 1} exp_send -s -- "--" exec sleep 3 send -s "+" send -s "=" sleep 1 send -h -- "-" send -h -- "-" sleep 1 send -h -- "v" interact

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  • Notepad++ Question

    - by Shane
    I would like a hotkey to Save All in Notepad++ then switch to the browser and refresh the page. I have to do this thousands of times a day and doing the Save All hotkey, then Alt-Tab to the right window, then F5 to refresh again and again, there must be a better solution? I am open to switching editors if there is another that can do this. I have tried using run commands but the problem is although it allows you to make something like [firefox.exe "current file"], if you come down to wanting to open it at a web address like localhost because it needs to run server side, then you have to manually specify the other part of the string, like [chrome.exe "custom var(web address) / filename"] and it always opens a new tab, then creates lots of clutter. Also, if you are editing an include file then it will try to open that instead of the page you want to see when you use the run command, a refresh would be the only realistic method I can think of using.

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  • h2 & linux. how to start the database?

    - by David
    sorry im rather new to linux ubuntu. i have an application that i made that runs with tomcat and connects to an h2 database. it all works fine on my windows laptop. im now moving it onto my linux computer to run all the time. but im having trouble with starting the database. i have downloaded h2 from their website. and its sitting on my desktop. the question is. how to start the database. and is their any other commands i need to know to run and operate it. thankyous

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  • Separate groups of objects based on their properties

    - by Bevin
    I want to separate an array of my custom object into several arrays, based on the values of their two properties. The struct looks like this: struct MyStruct { public string Person { get; set; } public string Command { get; set; } } Now, if I have an array with a few objects: {Person1, cmd1} {Person1, cmd3} {Person2, cmd3} {Person3, cmd2} {Person2, cmd4} I want to be able to place them into one array for each person, that lists all of the commands for that person: {Person1: cmd1, cmd3} {Person2: cmd3, cmd4} {Person3: cmd2} I hope I've made it clear with my descriptions. I would assume that there is an elegant way to do this with LINQ, but I have no idea where to start.

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  • How do I list all cron jobs for all users?

    - by yukondude
    Is there a command or an existing script that will let me view all of a *NIX system's scheduled cron jobs at once? I'd like it to include all of the user crontabs, as well as /etc/crontab, and whatever's in /etc/cron.d. It would also be nice to see the specific commands run by run-parts in /etc/crontab. Ideally, I'd like the output in a nice column form and ordered in some meaningful way. I could then merge these listings from multiple servers to view the overall "schedule of events." I was about to write such a script myself, but if someone's already gone to the trouble...

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  • Problem with Maven in Spring roo

    - by Dee
    I was trying to run the Wedding RSVP sample given with Spring Roo 1.0.0.RC3. I am running on Maven 2.2.1 and JDK 1.5.0_19, Java and M2 Home are properly set. Unfortunately none of the commands that involve Maven calls (example: "Perform test" or 'Perform eclipse") work and there is no error either. The cursor immediately returns on the roo command line. I also tried the steps at http://blog.springsource.com/2009/05/27/roo-part-2 but same problem. Did anybody face this issue?

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  • C++ Multithreaded server help

    - by kisplit
    Hello all, I'm working on a multithreaded server in c++ using boost-asio. Currently a design problem I'm running into deals with erasing a connection. I have a single server instance which holds a vector of connection objects. These connections receive commands which I parse. One command in particular deals with sending data to ALL connections in my vector. Now when a connection disconnects I'm currently erasing this connection from the vector and calling the destructor. It seems like I'm going to run into problems when someone 'SendAll' at the same time someone 'Disconnect'. Could anyone recommend a better design or just point me in the right direction? Any help greatly appreciated. Thanks

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  • tmux: create session if none exists

    - by rampion
    I'm switching from using gnu-screen to tmux, and I'm still trying to wrap my head around changes. One thing I'd like to be able to do is start tmux and have it automatically connect to a session if one exists, and otherwise create a new session. tmux attach attaches to an automatically existing session - but errors out if no session exists tmux new creates a new session - but it does so every time, so I can't leave it in my .tmux.conf tmux has-session tests whether a session exists - but I don't know how to stitch it together with the other commands Can anyone give me some configure file advice?

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  • Loading large amounts of data to an Oracle SQL Database

    - by James
    Hey all, I was wondering if anyone had any experience with what I am about to embark on. I have several csv files which are all around a GB or so in size and I need to load them into a an oracle database. While most of my work after loading will be read-only I will need to load updates from time to time. Basically I just need a good tool for loading several rows of data at a time up to my db. Here is what I have found so far: I could use SQL Loader t do a lot of the work I could use Bulk-Insert commands Some sort of batch insert. Using prepared statement somehow might be a good idea. I guess I was wondering what everyone thinks is the fastest way to get this insert done. Any tips?

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  • Send the "ENTER" from a bash script

    - by Smat
    I am trying to create a bash script to simulate a mail attack to our mailserver. For this reason i want to create a bash script to send hundred of mails to our server, but when i launch the command: $telnet 192.168.12.1 25 <-- where 192.168.12.1 is the ip of our server The telnet session start and all the commands that i write later aren't executed. I also tried to create a second script to launch command on the telnet session after that this one are been created, but when i write from the second script: $echo -ne "EHLO domain.com\r\f" It print the command but doesn't do the ENTER so the command is not taken. Any idea?

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  • RemoteWebDriver doesn't work with xpath

    - by questions
    I'm trying to use RemoteWebDriver with xpath locators on google.com, this is the log from node running firefox. It receives all those commands but doesn't executes them. I dont see any activity with browser, other than opening google homepage. 14:05:05.671 INFO - Executing: [get: http://google.com] at URL: /session/1341695 049401/url) 14:05:06.260 INFO - Done: /session/1341695049401/url 14:05:06.301 INFO - Executing: [find element: By.xpath: //*[@id="gbqfqw"]] at UR L: /session/1341695049401/element) 14:05:06.453 INFO - Done: /session/1341695049401/element 14:05:06.495 INFO - Executing: [send keys: 0 org.openqa.selenium.support.events. EventFiringWebDriver$EventFiringWebElement@74d5f412, [StackOverflow]] at URL: /se ssion/1341695049401/element/0/value) 14:05:06.796 INFO - Done: /session/1341695049401/element/0/value 14:05:06.822 INFO - Executing: [find element: By.xpath: //*[@id="gbqfb"]] at URL : /session/1341695049401/element) 14:05:06.935 INFO - Done: /session/1341695049401/element 14:05:06.987 INFO - Executing: [click: 1 org.openqa.selenium.support.events.Even tFiringWebDriver$EventFiringWebElement@7b64218d] at URL: /session/1341695049401/ element/1/click) 14:05:09.627 INFO - Executing: org.openqa.selenium.remote.server.handler.Status@ 6349a3ca at URL: /status) 14:05:09.627 INFO - Done: /status I tried with By.name(q) and it works.

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  • SVN update returns nothing, while it should

    - by user325483
    Hi everyone, First some background information; I've set up my SVN repository on my local server at home using VisualSVN Server. Using SSH on (or via php/shell script), i am able to check out a folder from this repository to the webserver, all goes well. Also updates and other svn commands execute normaly and return their messages. Now comes the problem, and I'm struggling with this for a few days now. Before I execute the checkout command *svn co http://server_home/folder*, I want to make sure no conflicts are going to happen, so I execute *svn status [folder_on_webserver]*. But this doesn't return the result as expected, it returns nothing. When I execute * svn status --show-updates [folder_on_webserver]* it returns the following: * newfolder * 13 anotherfolder * 13 yetanotherfolder * 13 . Status against revision: 16 As you can see it misses the svn codes (A,U,D). Does somebody knows why the svn update command and the svn codes doesnt work?

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  • How to launch a program as as a normal user from a UAC elevated installer

    - by KZ
    I'm writing an NSIS installer and the setup program elevates "as administrator" as needed on Windows 7 / vista. I need to run the installed program at the end of the install and don't want to launch it with the same privileges as the installer. The regular NSIS exec commands run the child process with the same permissions as the installer. There is a UAC plugin for NSIS, but the documentation on it isn't great and it seems v. new; I'd prefer not to use that plugin. Ideally, I'm looking for a small .exe I can include that'll launch the target program without UAC elevation. Does this exist? Any other suggestions? Thanks!

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  • How to insert into a table with just one IDENTITY column (SQL Server CE)

    - by Hei
    Hello I am trying to insert a value in a one IDENTITY column Table in SQL Server CE 3.5. I Tried the following: INSERT Target DEFAULT VALUES INSERT Target (ID) VALUES (DEFAULT) INSERT Target (ID) VALUES () But none of them worked. This is the SQL command I used to create the table (Using SQL Server Management Studio): CREATE TABLE Target( ID int NOT NULL IDENTITY (1, 1) PRIMARY KEY ); Microsoft help site (http://msdn.microsoft.com/en-us/library/ms174633%28SQL.90%29.aspx) mentions that DEFAULT values are not valid for identity columns however they do not mention any alternative. They mention something about uniqueidentifier and ROWGUID but I have not been able to make it work. I would appreciate any pointers on how to solve this problem or links to documentation about valid sql commands for sql server CE. Thank you

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  • When should I use adorners?

    - by Francesco
    Hi all! WPF is great because there are many things to achieve own goals. By example, for what I understand, adorners can add some controls to a UI element, but I think that the same behavior can be achieved through a custom control that contains the additional element. So, my question is: when should I prefer adorners to a more complex (but I think, more flexible) custom control? Please consider that I'm extensively using MVVM pattern and I would like to bind commands to the additional element. Particularly, I'm designing a diagram designer application and I would like to add connection points to my shapes. Thank you

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  • Fully automated MS SQL Restore

    - by hasen j
    I'm not very fluent with MS-SQL commands. I need a script to restore a database from a .bak file and move the logical_data and logical_log files to a specific path. I can do: restore filelistonly from disk='D:\backups\my_backup.bak' This will give me a result set with a column LogicalName, next I need to use the logical names from the result set in the restore command: restore database my_db_name from disk='d:\backups\my_backups.bak' with file=1, move 'logical_data_file' to 'd:\data\mydb.mdf', move 'logical_log_file' to 'd:\data\mylog.ldf' How do I capture the logical names from the first result set into variables that can be supplied to the "move" command? I think the solution might be trivial, but I'm pretty new to mssql.

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