If you look at the passwd command (/usr/bin/passwd on my Linux box) you will see that the permissions include a set user id (suid) bit.
This is indicated with an 's' instead of an 'x' in the user portion of the permissions list. The meaning of this is that when the binary is executed, its effective user id (euid) is set to the owner of the file; root in this case. Therefore, when the passwd command is executed, it is run as though root was running it and thus it is able to update the various root owned passwd and shadow files.
I have a file ( /tmp/file.txt ) , the file owner is user1:edp , the permission is 644 , I want everyone can overwrite the file but don't change the file owner and permssion , could suggest what can I do ? thx (2 Replies)
there is a directory eg. /home/edp/ , all the files under this directory :
1. the file and directory owner is "user1" ,
2. the permission is 644
I want everyone hv permission to overwrite all files and write a new file to it , but I want the file owner and permssion keep unchange , could... (1 Reply)
Hi Folks
I have a file with the following permission.
-r-sr-lr-- 1 apps appsgp 7612 Dec 19 2001 startup
Any idea what is the in the group means? In my mind I believe I need to be root to set l in the group. Am I right?
I don't have root access now. When I (as apps) a chmod... (2 Replies)
Hi,
When I listed one directory in Sun, it showed that :
-rwsr-xr-x 1 root bsmbin 78004 Oct 21 2004 bsmprsm
I don't know meaning of the character "s" in "rws" above. I have searched in Sun admin documents but no result. Would you please explain it ? :)
Thank you so much. (1 Reply)
Hello,
i need some help/advice on how to solve a particular problem.
these are the users:
|name | group |
---------- ---------------
|boss | department1 |
|assistant | department1 |
|employee | department1 |
|spy | department2 |
this is the... (0 Replies)
Hi All,
https://www.unix.com/unix-advanced-expert-users/105758-chmod-parent-sub-directories.html
I have to change permission for the directories and subdirectories in single command
when googled i found some updates but i understand what is switch.
If there is a command please... (2 Replies)
I have an application with the user mark and another user james is trying to run the application and ending up with file permission issues.
The user mark has set the umask as 002, I wanted to have a setting so that anyone can run the application without any file permission issues. Can anyone... (2 Replies)
Hi Friends,
I want to create one user on my server in such a way that when he logged in by ssh on server,he can able to access ONLY /var/www/drupal-6.2 this directory. Please tell me how should i do that. (4 Replies)
Hello All
I have a file with rw-rw-r permission
I need to mv the file into different directory (dir has rwx-rwx-rwx permission)
with an others permission
The application which is moving the file falls in other group
I am getting the error
mv cannot renamed permission denied
... (12 Replies)
Hi,
Could you please tell me the OS command to grant as similar to below permission?
rwxrwxr-x
OS -- HP-UX
Regards,
Maddy (8 Replies)
Discussion started by: Maddy123
8 Replies
LEARN ABOUT OPENDARWIN
pwconv
pwconv(1M) System Administration Commands pwconv(1M)NAME
pwconv - installs and updates /etc/shadow with information from /etc/passwd
SYNOPSIS
pwconv
DESCRIPTION
The pwconv command creates and updates /etc/shadow with information from /etc/passwd.
pwconv relies on a special value of 'x' in the password field of /etc/passwd. This value of 'x' indicates that the password for the user is
already in /etc/shadow and should not be modified.
If the /etc/shadow file does not exist, this command will create /etc/shadow with information from /etc/passwd. The command populates
/etc/shadow with the user's login name, password, and password aging information. If password aging information does not exist in
/etc/passwd for a given user, none will be added to /etc/shadow. However, the last changed information will always be updated.
If the /etc/shadow file does exist, the following tasks will be performed:
Entries that are in the /etc/passwd file and not in the /etc/shadow file will be added to the /etc/shadow file.
Entries that are in the /etc/shadow file and not in the /etc/passwd file will be removed from /etc/shadow.
Password attributes (for example, password and aging information) that exist in an /etc/passwd entry will be moved to the corre-
sponding entry in /etc/shadow.
The pwconv command can only be used by the super-user.
FILES
/etc/opasswd
/etc/oshadow
/etc/passwd
/etc/shadow
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO passwd(1), passmgmt(1M), usermod(1M), passwd(4), attributes(5)DIAGNOSTICS
pwconv exits with one of the following values:
0 SUCCESS.
1 Permission denied.
2 Invalid command syntax.
3 Unexpected failure. Conversion not done.
4 Unexpected failure. Password file(s) missing.
5 Password file(s) busy. Try again later.
6 Bad entry in /etc/shadow file.
SunOS 5.10 9 Mar 1993 pwconv(1M)