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  • how to send text to a process in a shell script?

    - by Martin
    So I have a Linux program that runs in a while(true) loop, which waits for user input, process it and print result to stdout. I want to write a shell script that open this program, feed it lines from a txt file, one line at a time and save the program output for each line to a file. So I want to know if there is any command for: - open a program - send text to a process - receive output from that program Many thanks.

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  • Reliable alert dialogs from the shell

    - by intuited
    I'd like to have a message pop up in response to various system events, mostly in order to be able to set reminders for myself from a shell session. There are a few ways to do this; zenity seems to be the most polished. However, I've found at least two problems with zenity: Messages do not appear on all workspaces. I tried using the gtk option --screen to control this, but they just appear on the current workspace regardless. So if I am switching workspaces as the message comes up, I will not see it. Messages do not appear above all other windows. Specifically, if I am using guake, a new zenity message will appear below the guake window and I won't be able to see it. I tried a few other apps a while back. Both gmessage and xmessage exhibited problem 1; gmessage also exhibited problem 2. I did find that kalarm, which can be scripted from the command line, worked acceptably, but I'm trying to avoid running the KDE stack if possible, and would prefer something lightweight with zenity's versatility. It seems that it might be possible to arrange for these problems to be resolved by setting the WM_CLASS, but I'm in a bit over my head there. It might also be possible to make modifications to the window after it launches with a script, but again I'm not sure where to look for resources on that.

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  • python: os.system does not execute shell comand

    - by capoluca
    I need to execute shell command in python program (I have ubuntu). More specifically I want to create graph using graphviz in python script. My code is os.system("dot -Tpng graph.dot -o graph.png") It does not work, but if I just type dot -Tpng graph.dot -o graph.png in command line then everything is fine. Do you know what the problem? Thank you! Edit: Does not work means that nothing happens, there are no errors. Output from dot -v -Tpng graph.dot -o graph.png: dot - graphviz version 2.26.3 (20100126.1600) Activated plugin library: libgvplugin_pango.so.6 Using textlayout: textlayout:cairo Activated plugin library: libgvplugin_dot_layout.so.6 Using layout: dot:dot_layout Using render: cairo:cairo Using device: png:cairo:cairo The plugin configuration file: /usr/lib/graphviz/config6 was successfully loaded. render : cairo dot fig gd map ps svg tk vml vrml xdot layout : circo dot fdp neato nop nop1 nop2 osage patchwork sfdp twopi textlayout : textlayout device : canon cmap cmapx cmapx_np dot eps fig gd gd2 gif gv imap imap_np ismap jpe jpeg jpg pdf plain plain-ext png ps ps2 svg svgz tk vml vmlz vrml wbmp x11 xdot xlib loadimage : (lib) eps gd gd2 gif jpe jpeg jpg png ps svg

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  • Ubuntu 12.10 Unity & Gnome Shell problems

    - by user109292
    I'm experiencing some problems since I decided to upgrade Ubuntu to 12.10 version two days ago. Firstly, I cannot select the Unity environment I previously used on 12.04 without opening the terminal with Ctrl+Alt+T and typing setsid unity. When I select the Unity environment on the account page when I start the computer, it automatically switch back to Gnome and launch my session. I tried to set back Unity using the setsid unity tip, and it worked fine. But after few minutes, everything freeze and I cannot control anything anymore. The only option left is to press the Power button of my Asus EeePC and switch everything off. Question 1 : What can I do to get my Unity environment back on 12.10 from the start, without using the terminal every time? What should I do to prevent the all system to freeze once done? Secondly, and since I cannot use Unity for new, I'm using an other interface, GNOME Shell. What's bothering me is that the Activities bar (let's call it like that, 'cause I don't know the proper name) and the Internet bar (or any bar from any other window) cannot merge into one another, reducing the display of the screen I'm actually using to peanuts! Question 2 : Is there a way to merge those two bars? Or is there a way to hide the Activities bar when I'm not using it like on Unity environment?

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  • Gnome-shell partially freezes

    - by user568021
    My specs: Ubuntu 12.04.1 LTS, Gnome3, Dell Studio laptop This is not happening all the time, but only sometimes .. totally randomly. When I'm in the middle of some work something totally weird happens. Keyboard suddenly stops working. I can't type, no matter which key I press nothing happens. I can't press Alt+Tab, I can't press Alt+F4, Alt+F2... nothing. Activities button is dead. Also right click does not work...and something even more annoying. I can click on the 'menu' in the top right corner(the menu pops up), but clicking on 'power-off' or 'suspend' option doesn't do anything. The only little thing I can do is: Close the lid of my laptop so it goes to sleep. Than wake it up again. And than it's ok. Everything works. So I guess restarting (or refreshing) gnome-shell fixes the problem. Sorry if the title of this question is odd... I don't know how to properly describe this.

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  • Can I edit the snapshots of websites on most visited sites page in Chrome?

    - by arik
    I saw the previous chain of discussion, but did not find a way to continue the thread - I have found the "Preference" (I have Windows 7), but in that, I did not find clearly what to modify. I did find a section called 'URLs pinned" or something like this, but it did NOT match fully the ones I have. I have activated the 'profile sync' for Chrome - don't know if it has any effect. Can you manually edit the icons of the most visited sites, for the new tab page in Chrome? When you open a new tab in Chrome, I get the 'new page' tab, where I selected the 'most popular', so I have 8 icons with the 8 most popular sites I visited; I can also pin any one of those I see on screen, such that they remain 'permanent' there. We are missing one which would point to, say, "hotmail". So, I was looking for a way to add 'hotmail' to be one of the 8. (and, by the way, we ticked the 'X' on one of those 8, and now it remains grey / shows nothing in it). So, my double-question: How can I add a URL of my choice into one of those 8 spaces? How can I restore usage of the last one?

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  • Why is my hg workbench & Adobe Reader toolbar icon a blank white page?

    - by Zasurus
    On my work's PC (windows 7 32bit) all Adobe Reader and hg Workbench icons on the toolbar (and general shortcuts for hg workbench) are just white pages (with the top left corner folded over). If you right click on the toolbar icon then right click on "TortoiseHg Workbench"(for hg workbench) then "Properties" then the "Change Icon..." button is greyed out (same for "Adobe Reader X"). Also the "Target:" is "TortoiseHg 2.4.0 (x86)" and is greyed out also the "Open File Location" is greyed out. This is the same for both Hg Workbench and Adobe Reader and seems to be the only thing that connects them. I have tried reinstalling to no avail. I also have local admin rights on the PC. I finally I have tried the following following questions without any luck (they aren't quite relevant to my issue but close): Adobe Reader program icon and pdf icons don't appear in Windows 7 Adobe PDF icon disappeared? Encase my description isn't enough to understand the issue here is a screenshot. As you can see the Hg Workbench icon (far left) and a pdf open in Adobe Reader X (second icon to from the left) are both blank and the shortcut is mainly greyed out.

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  • Unity install removed window borders, and display drivers.

    - by Vivek Sharma
    I installed unity, used for a while. Then i installed gnome-shell, used it for a while. Now decided to switch back to standard. Gnome is not working the way it use to be. I am using T61 with nvidia-latest drivers. Following issues... Window borders are not showing. Installed compiz settings, and re-check window decorations option. I had to re-install nvidia driver, as when I tried to apply normal visual effects, it said no display driver found. Gnome panel is not coming, and mouse pointer is a "cross" than a "arrow". I then opened a terminal and enter gnome-panel. Panel came and window borders came back. Nothing is showing on desktop, and the right click is also not populating the menu. When i loging, an error message saying, docky did not start and it requires compiz to work. After starting gnome-panel from terminal, i went to systempreferencesAppearance. And selected normal visual effects. It activated, i selected keep the settings. Now when i restart or re-login, everything is gone. I have to run gnome-panel manually, and then re-enable visual setting. Ofcourse i can add gnome-panel in startup applications, but i want to know what has installing unity/gnome-shell has done, that these setting are messed up. I manually removed mutter, as Appearance application was showing mutter installed, cant enable effects. What shall i do to get back a standard gnome-desktop back.

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  • Custom daemon script: works, but does not run at boot / startup

    - by pearjoint
    this is Ubuntu 10.10 Maverick. I have the following shell script in init.d that I want to run as a "daemon" (background service with start/stop/restart really) at system startup. There is a symlink in rc3.d. I tried 4 and 5 too. (Ideally this would initialize before graphical login happens and before a user logs in.) IMPORTANT: the script works 100% as expected and required when testing this with service MetaLeapDaemon start and service MetaLeapDaemon stop. (This shell script calls a Python program which makes sure the appropriate .pid files are both created at startup and deleted at exit.) So generally it works fine but now my only issue is why it will not be run at any of the run-levels I tried. I know for sure it isn't run because the log file it normally creates does not get created. As you can see (by the lack of any uid:gid args in the start-stop-daemon commands) this would currently run only under root, is this forbidden in a default setup? Here's the script, pretty much your run-off-the-mill daemon script really: #! /bin/sh DAEMON=/opt/metaleap/_core/daemon/MetaLeapDaemon.py NAME=MetaLeapDaemon DESC="MetaLeapDaemon" test -f $DAEMON || exit 0 set -e case "$1" in start) start-stop-daemon --start --pidfile /var/run/$NAME.pid --exec $DAEMON ;; stop) start-stop-daemon --stop --pidfile /var/run/$NAME.pid ;; restart) start-stop-daemon --stop --pidfile /var/run/$NAME.pid sleep 1 start-stop-daemon --start --pidfile /var/run/$NAME.pid --exec $DAEMON ;; *) N=/etc/init.d/$NAME echo "Usage: $N {start|stop|restart}" >&2 exit 1 ;; esac exit 0

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  • Black GUI with minimal desktop icons appeared after powering on my desktop PC

    - by Christopher Chipps
    My computer powered on fine but after POST, a dialog box appeared with a red "X" and it gave some sort of warning. It had a long file name, I cannot recollect the entirety of it but it was something like C:/system32/desktop....After clicking ok, the GUI was totally black with only the Recycle Bin icon in the Desktop, and the Taskbar was there as well. I restarted it, and the GUI was back to normal with the icons and wallpaper in their proper place. I'm sure if I knew more of that file name in the dialog box, that would be helpful to those reading this but should I be concerned that this happened?

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  • Restore Default OSX Home Folder Icons

    - by Cerales
    I want to keep folders such as Pictures and Documents in my home folder in sync between computers; at the moment, I'm using Dropbox to do this. On Computer A I added a symlink to the folders in my home directory to the Dropbox folder. On Computer B I deleted the existing Pictures and Documents folders and replaced them with symlinks to the folders in the Dropbox folder. This works very well, except that in Finder I don't see the nice little icons that Lion has by default for folders of a particular kind. Is there any way to restore these?

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  • Automator apps with different icons that persist upon saving

    - by ashcatch
    Automator allows to save a workflow as an application bundle. It uses an Automator specific icon for doing this. I want to change this icon (using different icons for different workflows). I can do this by going into the application bundle and change the icon with Icon Composer. The disadvantage of this solution is that if I open the application bundle in Automator and save it, it uses the default icon again. Is there a way to change the icon for good?

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  • is there a way to group desktop icons on the task bar

    - by Memor-X
    i have a folder on the desktop which has a bunch of programs i use frequently, i can't pin all these programs to the taskbar themselves as there are too many for the screen width that it'll just make the taskbar scrollable i am wondering if i can do one of the following pin the icons to the taskbar under 1 icon pin the folder to the taskbar separately to the Windows Explorer button which when there are no folders open will open up the libraries and if there are folders it'll show me the folders open, this way if i have 5 folders open and my frequently used programs folder i can just click on the frequently used programs folder icon on the taskbar and be given that folder only i'm trying to reduce the number of clicks, scrolling or scanning across the task bar i need to do in order to find a program

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  • Snow Leopards Desktop Icons keeps Resizing Repeatedly

    - by Arashi
    I'm using a new macbook 10.6.5. I've been using mac OS for years. However, the problem that I'm getting is that the desktop icons keep resizing repeatedly. It keeps going to the biggest size possible and its driving me crazy. I've been resizing it back to medium size all the time. But when I start doing something at the finder it starts resizing by itself once again. Is there a fix to this problem? Please help.

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  • Multiple thunderbird Icons in System Tray(Windows 7) & TaskBar

    - by chobo2
    Is this some new "feature" for thunderbird 8? When I start thunderbird it starts by opening thunderbird. Once it is loading thunderbird it loads another 6 thunderbirds. The windows are called Mozilla Thunderbird Inbox - [email protected] - Mozilla Thuderbird Inbox - [email protected] - Mozilla Thuderbird Inbox - [email protected] - Mozilla Thuderbird Inbox - [email protected] - Mozilla Thuderbird (yes it repeats the same one a few times) Inbox - [email protected] - Mozilla Thuderbird I have 7 email accounts but for whatever reason it only made 3 windows. What happened to the one window? When I minimize to tray I got 4 of thunderbird icons. When closing one of them all of the close. My other windows 7(32 bit not 64 bit) only have one instance.

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  • HELP! Snow Leopard's Desktop Icons keeps Resizing Repeatedly

    - by Arashi
    I'm using a new macbook 10.6.5. I've been using mac OS for years. However, the problem that I'm getting is that the desktop icons keep resizing repeatedly. It keeps going to the biggest size possible and its driving me crazy. I've been resizing it back to medium size all the time. But when I start doing something at the finder it starts resizing by itself once again. Is there a fix to this problem? Please help.

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  • Getting output of a shell script in Cocoa

    - by Tristan Seifert
    Is there a way that lets me run a shell script, and display the output in an NSTextView? I do not want any input from the user to the shell script at all, since is is just called to compile a buch of files. The shell script part works fine so far, but I just can't figure out how to run it and show the output in an NSTextView. I know a shell script can be run using system() and NSTask, but how do I get it's output into an NSTextView?

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  • Invoking cl.exe (MSVC compiler) in Cygwin shell

    - by barcarole
    I'm heavily using Cygwin (with Putty shell). But, it's quite tricky to invoke cl.exe (i.e., Visual C++ compiler toolchain) in the Cygwin bash shell. Running vcvars*.bat in the bash shell doesn't work obviously. I tried to migrate VC++'s environment variables to Cygwin, but it's not that easy. Is there anyone who ever tried to run VC++ compiler in Cygwin bash shell? Thanks, JJ

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  • Icons for websites with an <img> tag

    - by Paul Tarjan
    What is the best way to link to the icons of websites? Meaning, given a hostname, what src should I put in an <img tag to link to the 16x16 icon? I was just doing http://<hostname>/favicon.ico. It seems some .ico files aren't liked by different browsers. Chrome seems to like them all, but Safari, FF and IE all have problems with various icons. Example page: http://paultarjan.com

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