I've built a script that places an icon in the launcher to open a program as the root user. This script also adds NOPASSWD to the user's configuration for this specific app in /etc/sudoers, however the one part of the script that refuses to work is the creation of the profile in /root/.config/<app>. I can create this manually, using the same mkdir command, but when I place the same command in the script it returns no such file or directory. I have replicated this behaviour a number of times, including on a clean install.
Is there some form of protection that disallows the ability to automate the creation of this directory? Or am I missing something about hidden folders in Linux?
I assume you are doing this when the .config dir does not exist yet.
mkdir /root/.config/<app>
Try this :
mkdir -p /root/.config/<app>
This will create any missing parent directory to the full path you provide.
Related
I am currently in /Desktop on my ubuntu system and I want to create a directory named vip inside /Documents/subd. Please not that Documents and Desktop are at same level. But the crux of this question is that I have to write a shell script such that it can create the requied directory from any directory of the system, no matter where it is situated.
I have tried concatenating $home with the required directory path!! But it is not working.
mkdir $home."/Documents/subd/vip"
I need to run this inside /Desktop or any other directory.
Please guide me!!
This should do the job:
mkdir "$HOME/Documents/subd/vip"
You just had some minor errors in your command.
I need to know if it is possible to create a read only directory from windows command line.
I know it is possible to use chmod and make files read only. But what I need is to create a folder and then immediately set it as read only upon creation. Trying to create new files inside this directory should then throw an error.
This can be done manually by modifying folder permissions using the gui. But, I need to do it from cmd for some tests.
I tried
attrib +r dirPath
But this only works for files and not for the whole directory.
Any help is appreciated.
EDIT:
A background to me problem. I need to test the behavior of a software that writes some text files. I want to test a use-case when I ask the software to write to a read only directory. I want to see I handle the exceptions correctly and inform users appropriately.
I have a unix shell script file whose owner is "xyz" when run deletes some specific files.
I want to trigger this script to delete files in some other directory where the owner for the files to be deleted is different from the owner of the script. Is this possible? Is this possible to run this script as different user so that it can delete those new files?
EDIT : I use Autosys to periodically trigger this script.
You can chmod the files that need to be deleted first if you have sufficient rights. Afterwards your script, no matter what user it executes, will succeed.
Examples : http://en.wikipedia.org/wiki/Chmod
Usually you use sudo for that:
sudo -u ANOTHER_USER /path/to/the/script.sh
However, your current account needs proper permissions to do so. You can configure those permissions using the file /etc/sudoers.
You'll find a ton of articles out there how to use sudo. This for example: http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:Ch09:_Linux_Users_and_Sudo
I've finished a little useful script written in Bash, hosted on github. It's tested and documented. Now, I struggle with how to make it installable, i.e. where should I put it and how.
It seems other such projects use make and configure but I couldn't really find any information on how to do this for bash scripts.
Also I'm unsure into which directory to put my script.
I know how to make it usable by myself but if a user downloads it, I want to provide the means for him to install it easily.
There is no standard for this because most of the time, a project isn't a single script file. Also single file scripts don't need a build step (the script is already in an executable form) and configuration usually comes from an external config file (so no need for a configure script, either).
But I suggest to add a comment near the top of the file which explains what it does and how to install it (i.e. chmod +x + copy to folder).
Alternatively, you could create an installer script which contains your original script plus a header which asks the user where she wants to install the real script and which does everything (mkdir, set permissions with sudo, etc) but it really feels like overkill in your case.
If you want to make it installable so the package manager can easily install and remove (!) it, you need to look at the documentation for rpm or Debian packaging. These are the two most used package managers but they can't install a script per-user (so it would probably end up in /usr/bin)
instruct them to create a file named after the script in their home directory, chmod ug+x the file so it has executable permissions than put the script inside the file, don't forget the #!/bin/bash up top of the vim. This example is a script to copy a file, archive the copied file than remove the copied file leaving only the original file and the archived file.
#!/bin/bash
#### The following will copy the desired file
cp -r /home/wes/Documents/Hum430 /home/wes/docs
#### Next archives the copied file
tar -zcvf Hum430.tar.gz /home/wes/docs
#### and lastly removes the un-archived copy leaving only the original and the archived file.
rm -r /home/wes/docs
### run the file with ./filename (whatever the file is named)
I created a simple program that takes the path of a directory as an input, creates an archive of that directory (converting it into a single file), adds a shebang to that file (so that the contents of the file can be easily extracted), and writes the file to the base directory of the specified path.
The problem is that the file does not extract itself when I double click on it. Instead the operating system (I'm using Ubuntu 11.10) tries to open it with gedit. This obviously shows the shebang, random gibberish, and the contents of the archived files.
I made the file executable, first by using chmod +x; and when it still didn't work I tried chmod 777. However it still refuses to execute the file with the shebang when I double click on it. Perhaps this is because it's not a pure text file.
Interestingly when I try to execute the file directly from command line it reads the shebang and extracts the contents of the archive properly. So there's nothing wrong with my file format. I don't know much about what operating systems do when you double click on a file but I would sure like to understand.
It surely makes no sense to add a shebang to a file if you still need to manually execute it from the command line. One advantage could be that you don't need to specify the program to open it with but I believe that's hardly an advantage. Any help will be greatly appreciated.
Update 1:
The program that creates the archive is called opm. It can be installed via the node package manager using the following command:
npm install opm
After that you simply use opm to pack and unpack directories for you. For example if I have a directory called test in my home directory then I can open a terminal and execute the following command to pack it:
opm test
This will create an archive of the directory called test.pack in the home directory. The .pack file has the shebang #!/usr/bin/opm. Opening a file with the extension .pack with opm tells it that it's an archive and opm unpacks it in the same directory.
Note: Change the name of the test.pack file if you do not want it to overwrite your existing test directory.
I added the shebang to the .pack file so that it would extract itself when I opened it. However that doesn't seem to work. Nevertheless if I run one of the following command then it works:
./test.pack
You may check my source code and make any modifications to the program as you may wish to.
Update 2:
Alright I created the following .desktop file for opm and stored it in the $HOME/.local/share/applications/ directory:
[Desktop Entry]
Type=Application
Version=1.0
Encoding=UTF-8
Name=OPM
GenericName=Object Packer and Minifier
NoDisplay=true
Comment=JavaScript Package Manager
TryExec=opm
Exec=opm %f
Terminal=false
MimeType=application/opm
Now I was able to associate .pack files with opm by right clicking on a .pack file, going to the Properties window, the Open With tab, and setting opm.desktop as the default application. Now I am able to unpack a .pack file by simply opening it.
However I would like to know how to associate .pack files with the mime type application/opm. Currently the .pack files are associated with application/x-java-pack200. How do I do so? Is it better if I use a different extension (e.g. .opm)? By associating the packed archives with the mime type application/opm will the OS open them with opm by default without having to explicitly set a default application from Properties > Open With?
If there's already a MIME-type associated with .pack then you'll want to use a different extension (.opm) to associate with your MIME-type (application/opm). The way you automatically associate a program that opens files of a specific MIME-type is with xdg-mime .
Alternatively,
Edit ~/.local/share/applications/mimeapps.list and put your MIME/application combo under [Default Applications] like so:
[Default Applications]
application/opm=opm.desktop;
Place your opm.desktop file in ~/.local/share/applications/ folder. (You've already done this)