Get/set Unix file 'owner'?
lazarus / 32-Linux

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AlexTP · 2021-06-17 19:12

CudaText runs 'pkexec /bin/cp old_filename new_filename'.
It works OK but the owner of that file changes from 'root' to my name.
Can I change the owner of a file?
Can I read the owner of a file?

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winni · 2021-06-17 19:37

Hi!

The unit BaseUnix has a wapper for the Unix command chown:

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i Function
 FpChown   (const path : RawByteString; owner : TUid; group : TGid):
cInt;
Winni

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AlexTP · 2021-06-17 20:00

To run the 'pkexec --user username' I need the string-user-name of
file owner. How to get it?

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skalogryz · 2021-06-17 20:08

don't you need elevated rights (sudo) to assign "root" as the owner?

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winni · 2021-06-17 20:08

Hi


Use the Unix command id:

To get the UserID:Code: Bash  [Select][+][-]window.onload =
function(){var x1 = document.getElementById("main_content_section");
if (x1) { var x = document.getElementsByClassName("geshi");for (var i
= 0; i  id -u winni

To get the GroupId:


Code: Bash  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i id -g winni

Winni

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winni · 2021-06-17 20:10

Quote from: skalogryz on June 17, 2021, 10:08:13 pmdon't you need
elevated rights (sudo) to assign "root" as the owner?

Yes

Winni

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winni · 2021-06-17 20:36

Hi!

Oops - you need it vice versa.

For UserId 1000  you use:

Code: Bash  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i grep - w
1000 /etc/passwd
It returns in my case:

Code: Text  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
winni:x:1000:100::/home/winni:/bin/bash

which is:

Code: Text  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
UserName:pwd:UserID:GroupID:comment:HomeDirectory:shell
Winni

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AlexTP · 2021-06-17 21:21

Thanks.
I found that 'pkexec /bin/mv' does NOT set root owner. But 'pkexec
/bin/cp filename /etc/filename' does it! Solved.