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  • File command output is different for same file on diff machine

    - by Coka
    I get different output of file command on same file(checked inode) from different machines. One of the machines is with suse10 sp3 and the another - rhel4. machine1>file x.tcl x.tcl: ASCII English text machin2>file x.tcl x.tcl: data Even in vi editor same file look different from different machine. Any clue? One more thing - there's third machine suse10 sp3 works fine. Is this machine issue?

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  • Run command automatically as root after login

    - by J V
    I'm using evrouter to simulate keypresses from my mouses extra buttons. It works great but I need to run the command with sudo to make it work so I can't just use my DE to handle autostart. I considered init.d but from what I've heard this only works for different stages of boot, and I need this to run as root after login. $ cat .evrouterrc "Logitech G500" "/dev/input/event4" any key/277 "XKey/0" "Logitech G500" "/dev/input/event4" any key/280 "XKey/9" "Logitech G500" "/dev/input/event4" any key/281 "XKey/8" $ sudo evrouter /dev/input/event4

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  • 7-Zip Command Line Maximum Compression

    - by Steve Robathan
    I am writing a batch file to compress a folder using various archiving applications. Currently I also use 7-Zip but manually set up the parameters I would like to add 7-zip to my batch The folder concerned has many sub folders and I need to take this into account What is the command line for the following keeping folder structure?: Archive Format=7z Compression Level=Ultra Compression Method=LZMA Dictionary Size=512MB Word Size=273 Solid Archive Many thanks

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  • "apache2ctl command not found" appears when invoking apache2ctl

    - by OC2PS
    I am running Apache 2.4.6 on my CentOS 6.4 server. Having some trouble with rewrite...so was trying to check loaded modules apache2ctl -M But that returns apache2ctl command not found So I tried which apache2ctl and I get no apache2ctl in (/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin) I am sure apache is installed and running. How do I find apache2ctl/ check loaded modules now?

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  • ssh login - execute command - exit

    - by renton
    hi folks, is there a way to just execute a command (or script) on a user (ssh) login and then exit? some kind of replacing the default shell with a custom script. i want a user only be able to restart a service, but not to have regular shell-access thanks

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  • shell script or command to search and replace [closed]

    - by Redbox
    Possible Duplicate: My server’s been hacked EMERGENCY lately website on my server has been infected with nasty javascript like this: http://pastebin.com/7XCidF6C i wonder is there any where to search and remove the entire script block? i only know how to search which files: find /home/loudcom/public_html/tv -iname '.' | xargs grep --color 'f1930e\|fff309' how do i apply sed or any other command to replace the entire block of nasty code to empty? im using Centos 6.

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  • The meaning of the first line output in the iwconfig command in Linux

    - by John Smith
    When I'm using the iwconfig command on my current wifi interface , wlan0 , the first line I get as output is wlan0 IEEE 802.11bgn. When I try to do this when I am connected to other WiFi's, I sometimes get other versions, like IEEE 802.11bg or IEEE 802.11abgn. I want to ask, what's the meaning of this output? if the output is IEEE 802.11bgn then it means that this WiFi supports both the b , g and n standards or it means something else? Thnaks :)

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  • command line LVM issue on CentOS 5

    - by alex-M
    I am able to create from using lvm GUI to do as follows: /dev/var-v0l/var /var ext3 defaults 1 2 /dev/varopt-vol/var-opt /var/opt ext3 defaults 1 2 $df /dev/mapper/var-v0l 103208224 1881092 96084460 2% /var /dev/mapper/varopt-vol 103208224 192252 97773300 1% /var/opt but using command line LVM I created I can not do as the above $ df df: `/var/opt': No such file or directory /dev/mapper/var-v0l 103208224 1881092 96084460 2% /var What am I missing.

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  • WPF: Menu Items only bind command parameters once.

    - by Aran Mulholland
    Ive noticed this a couple of times when using menus with commands, they are not very dynamic, check this out. I am creating a menu from a collection of colours, I use it to colour a column in a datagrid. Anyway when i first bring up the menu (its a context menu) the command parameter binding happens and it binds to the column that the context menu was opened on. However the next time i bring it up it seems wpf caches the menu and it doesnt rebind the command parameter. so i can set the colour only on the initial column that the context menu appeared on. I have got around this situation in the past by making the menu totally dynamic and destroying the collection when the menu closed and forcing a rebuild the next time it opened, i dont like this hack. anyone got a better way? <MenuItem Header="Colour" ItemsSource="{Binding RelativeSource={RelativeSource AncestorType={x:Type local:ResultEditorGrid}}, Path=ColumnColourCollection}" ItemTemplate="{StaticResource colourHeader}" > <MenuItem.Icon> <Image Source="{StaticResource ColumnShowIcon16}" /> </MenuItem.Icon> <MenuItem.ItemContainerStyle> <Style TargetType="MenuItem" BasedOn="{StaticResource systemMenuItemStyle}"> <!--Warning dont change the order of the following two setters otherwise the command parameter gets set after the command fires, not mush use eh?--> <Setter Property="CommandParameter"> <Setter.Value> <MultiBinding> <MultiBinding.Converter> <local:ColumnAndColourMultiConverter/> </MultiBinding.Converter> <Binding RelativeSource="{RelativeSource AncestorType={x:Type DataGridColumnHeader}}" Path="Column"/> <Binding Path="."/> </MultiBinding> </Setter.Value> </Setter> <Setter Property="Command" Value="{Binding RelativeSource={RelativeSource AncestorType={x:Type local:ResultEditorGrid}}, Path=ColourColumnCommand}" /> </Style> </MenuItem.ItemContainerStyle> </MenuItem>

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  • AvalonDock + UserControl + DataGrid + ContextMenu command routing issue

    - by repka
    I have this kind of layout: <Window x:Class="DockAndMenuTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:ad="clr-namespace:AvalonDock;assembly=AvalonDock" Title="MainWindow" Height="350" Width="525"> <ad:DockingManager> <ad:DocumentPane> <ad:DockableContent Title="Doh!"> <UserControl> <UserControl.CommandBindings> <CommandBinding Command="Zoom" Executed="ExecuteZoom" CanExecute="CanZoom"/> </UserControl.CommandBindings> <DataGrid Name="_evilGrid"> <DataGrid.Resources> <Style TargetType="DataGridRow"> <Setter Property="ContextMenu"> <Setter.Value> <ContextMenu> <MenuItem Command="Zoom"/> </ContextMenu> </Setter.Value> </Setter> </Style> </DataGrid.Resources> </DataGrid> </UserControl> </ad:DockableContent> </ad:DocumentPane> </ad:DockingManager> </Window> Briefly: ContextMenu is set for each DataGridRow of DataGrid inside UserControl, which in its turn is inside DockableContent of AvalonDock. Code-behind is trivial as well: public partial class MainWindow { public MainWindow() { InitializeComponent(); _evilGrid.ItemsSource = new[] { Tuple.Create(1, 2, 3), Tuple.Create(4, 4, 3), Tuple.Create(6, 7, 1), }; } private void ExecuteZoom(object sender, ExecutedRoutedEventArgs e) { MessageBox.Show("zoom !"); } private void CanZoom(object sender, CanExecuteRoutedEventArgs e) { e.CanExecute = true; } } So here's the problem: right-clicking on the selected row (if it it was selected before the right click) my command comes out disabled. The command is "Zoom" in this case, but can be any other, including a custom one. If I get rid of either docking or UserControl around my grid there are no problems. ListBox doesn't have this issue either. So I don't know what's at fault here. SNOOP shows that in cases when this propagation fails, instead of UserControl, CanExecute is handled by PART_ShowContextMenuButton (Button), which is part of docking header. I've had other issues with UI command propagation within UserControls hosted inside AvalonDock, but this one is the easiest to reproduce.

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  • Supporting Piping (A Useful Hello World)

    - by blastthisinferno
    I am trying to write a collection of simple C++ programs that follow the basic Unix philosophy by: Make each program do one thing well. Expect the output of every program to become the input to another, as yet unknown, program. I'm having an issue trying to get the output of one to be the input of the other, and getting the output of one be the input of a separate instance of itself. Very briefly, I have a program add which takes arguments and spits out the summation. I want to be able to pipe the output to another add instance. ./add 1 2 | ./add 3 4 That should yield 6 but currently yields 10. I've encountered two problems: The cin waits for user input from the console. I don't want this, and haven't been able to find a simple example showing a the use of standard input stream without querying the user in the console. If someone knows of an example please let me know. I can't figure out how to use standard input while supporting piping. Currently, it appears it does not work. If I issue the command ./add 1 2 | ./add 3 4 it results in 7. The relevant code is below: add.cpp snippet // ... COMMAND LINE PROCESSING ... std::vector<double> numbers = multi.getValue(); // using TCLAP for command line parsing if (numbers.size() > 0) { double sum = numbers[0]; double arg; for (int i=1; i < numbers.size(); i++) { arg = numbers[i]; sum += arg; } std::cout << sum << std::endl; } else { double input; // right now this is test code while I try and get standard input streaming working as expected while (std::cin) { std::cin >> input; std::cout << input << std::endl; } } // ... MORE IRRELEVANT CODE ... So, I guess my question(s) is does anyone see what is incorrect with this code in order to support piping standard input? Are there some well known (or hidden) resources that explain clearly how to implement an example application supporting the basic Unix philosophy? @Chris Lutz I've changed the code to what's below. The problem where cin still waits for user input on the console, and doesn't just take from the standard input passed from the pipe. Am I missing something trivial for handling this? I haven't tried Greg Hewgill's answer yet, but don't see how that would help since the issue is still with cin. // ... COMMAND LINE PROCESSING ... std::vector<double> numbers = multi.getValue(); // using TCLAP for command line parsing double sum = numbers[0]; double arg; for (int i=1; i < numbers.size(); i++) { arg = numbers[i]; sum += arg; } // right now this is test code while I try and get standard input streaming working as expected while (std::cin) { std::cin >> arg; std::cout << arg << std::endl; } std::cout << sum << std::endl; // ... MORE IRRELEVANT CODE ...

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  • Linux Distro for Beginners

    - by XLR3204S
    Well... I know that's the question arising all over the Internet, but I couldn't find an answer to suit me after googling for quite some time. I'd like to get a Linux distribution, and start learning using the CLI. I'm looking for a distribution already having GNOME installed, as I'll be using Linux-Command.org as my learning resource, and I'm not very familiar with CLI-based web browsers. I'd mainly like to get to know my way around a UNIX-based system, and then I think I'd like to pick up a CLI-only distribution, and start doing more complex stuff. I've tried Ubuntu, Fedora Core, OpenSolaris and FreeBSD (the last two aren't linux distros, I know). Ubuntu and FC are fine, they do come with Firefox, but I'm not really sure they're meant for learning purposes. OpenSolaris was OK as well, but I haven't got to play with it enough. FreeBSD 7.2 did not want to install itself on my 13" MacBook Pro, it generated a kernel panic everytime while copying the files to the disk. So to sum this up, I'm trying to learn Linux, and I'm willing to invest time into this (that is, not giving up when the first problems arise). I also have intermediate knowledge of C++, if it helps, and I'm also using the CLI-vim to write small C++ CLI-based programs, so text editing should be any problem. And... speaking of Macs, how am I going to be limited if I try to learn how to use UNIX-based systems using the OS X Terminal? It uses bash 3.2, isn't this the same shell as the one found on most of the Linux machines? How does the fact that OS X is based on FreeBSD 4.4, if I'm not mistaking, affect this? Thanks in advance, and hopefully, I'll have a starting point ASAP.

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  • Newbie: get access privilege

    - by Mellon
    I am newbie on Linux Ubuntu machine. I logged in to the Ubuntu with username: student. There are some directories only allowed root user to access, for example /var/lib/mysql ,(I know I can use sudo to access but it is not what I want). If I want to get the access privilege on those directories with student account, is it so that I can run the following command : chown student: PATH_TO_ROOT_USER_PRIVILEGED_DIR and after that, I can access that directory by using my own account ? am I right? If I am right, then will root user lose the access privilege because I changed it to student user? If I am wrong, please tell me the right solution. P.S. please don't concern on what I am going to do on /var/lib/mysql directory, that is only my example, as I mentioned above, I mean generally *for those directories which only have root privilege*, can I use chown to change access privilege and will root user then loose the access because of the change made by chown ? I just wanna know the effect of chown.

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  • Menu tab completion for recent history in zsh

    - by dat5h
    I am interested in a potential zle widget for zsh. Is there a way to build a widget that mimics the kill-completion selectable menu? Essentially I want to be able to press , tab in vi-command-mode, or maybe !-tab-completion at the shell and get a list of recent history (or related history compared what is already entered at the commandline) that allows me to scroll through it and possibly select a relevant function to call or compare similar calls. Looking through the manual I stumbled onto a similar widget that I have mapped like so: # tab completion history menu (vicmd) autoload -z history-beginning-search-menu zle -N history-beginning-search-menu-space-end history-beginning-search-menu bindkey -M vicmd "\t" history-beginning-search-menu-space-end # emacs binding could be "\e\t"? (I wouldn't know) Therefore, if I enter vicmd and hit tab when I enter something like "grep", then I get a list of all grep calls in history. It also asks me for the list-number and it will perform the numbered item in history. If I enter a space and then try this, it lists ALL of my history history. This is fairly close to what I want, but there are some problems. For example, 1) it prints the entire list of relevant history and does not check the number of lines of the screen so it could easily blow up the space on the terminal; 2) when I type in numbers for selecting an item in history it does not show me the numbers I type, so I may make a mistake and have to start over again; 3) I would love to be able to hook in appearance tweaks. I was wondering if there exists more updated version of this widget or if there is any way to look at the source for kill-completion or history-beginning-search-menu to see if I could think of a way to do it.

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  • script to run sox to combine multiple mono tracks to stereo

    - by Ze'ev
    I have a folder full of .wav audio files. Some are stereo, most are mono splits. The mono split pairs are all named foo bar track.L.wav and foo bar track.R.wav I can use the command line tool sox to combine a mono pair into 1 stereo track like this: sox -M track1.L.wav track1.R.wav track1.Stereo.wav where the first 2 files are the mono pairs, and the third is the output stereo file. This is great, but I'd like to have a script that will automatically find all the mono pairs and combine them into stereo files. I.e., I need it to find all files which have the same name except for the .L. and .R. before the extension, and run sox on them, outputting to a new file with the same name without the L/R suffix. For example, if my folder contains these files: track1.L.wav track2.L.wav track3.L.wav track4.L.wav track1.R.wav track2.R.wav track3.R.wav track4.R.wav track6.wav track7.wav I need to run these commands: sox -M track1.L.wav track1.R.wav track1.Stereo.wav sox -M track2.L.wav track2.R.wav track2.Stereo.wav sox -M track3.L.wav track3.R.wav track3.Stereo.wav sox -M track4.L.wav track4.R.wav track4.Stereo.wav Here's where I am so far: for file in ./*.L.wav; do file2=`echo $file | sed 's_\(.*\).L.wav_\1.R.wav_'`; out=`echo $file | sed 's_\(.*\).L.wav_\1.STEREO.wav_'`; echo $file - $file2 - $out; done That works, but when I replace the echo line with sox -M $file $file2 $out; it doesn't work; spaces in the filenames cause it to fail.

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