How to set password protected of the script

deepak_message · 12-30-2011, 02:33 PM

Hi,
I have written a shell script in unix for my personal use. Now I want to make it only execute and not to read/write. Can anybody help me how to set password protect/encript my script.
If any one type vi script.sh, it should ask password, if password match then open an script. otherwise message should say deny.
I have vi editior ony not vim.

Thanks,

T3RM1NVT0R · 12-30-2011, 03:09 PM

Hi deepak_message,

Well I am not aware of any tool or a way by which you can password protect a file in linux. However, you can play around with file system rights to restrict the access.

You can chown that file and then change the permission to 700 and that should be it. Remember that root user will be an exception in this case as root can do whatever he wants to do :-)

Commands for your reference:

Code:

chown your_username:your_personalgroup filename

Code:

chmod 700 filename

droyden · 12-30-2011, 03:11 PM

Bash, or whatever shell is interpreting the script needs to be able to read it so that it can execute it.

scorpioz22 · 12-30-2011, 03:24 PM

it should be chmod 711 if you want others to be able to execute the script but not able to read/write to it.

Code:

$ ls -l testscript.sh
-rwx--x--x 1 user user 0 Dec 30 13:23 testscript.sh

T3RM1NVT0R · 12-30-2011, 03:28 PM

Yes, scorpioz22 is right it should be 711 if you want others to be able to execute that script. Sorry I didn't look at the part where you said that you want others to execute. Another way to make others to execute that script is setting up uid for that particular file so that other users will be able to run that file as if they are running using your user account.

deepak_message · 12-30-2011, 04:02 PM

Thanks for your valuable time!!!

But I am looking when try todo #vi scritp.sh , it should ask password. if type wrong password , can't use the script using vi mode. they can read using cat. but can't edit.

bathory · 12-30-2011, 04:46 PM

Quote:

Now I want to make it only execute and not to read/write. Can anybody help me how to set password protect/encript my script.

You can use shc to compile your script into a binary executable, so it cannot be read.
If there is no package for your distro, you can get the sources from here.

Regards