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Operating Systems Linux Red Hat Touch - changing date and time Post 302930997 by brjohnsmith on Friday 9th of January 2015 09:46:50 AM
Old 01-09-2015
Touch - changing date and time

Hi,

I am facing a problem with the command - TOUCH on Linux.

See the example below:

File on Linux: rw-rw-r-- user1 user1 Jan 01 09:00 test.txt

The file - test.txt was created by the user - user1.

Now, I want to change the date and time, but using other user - user2

The user2 belongs to the same user1 group.

if the command: touch -c -t 201501091030 test.txt - is issued, I have been receiving an error that the operation is not permitted.

However, if I use the command: touch -t 201501091030 xxx.txt , at the same directory, the file xxx.txt is created.

Does anyone know if the touch command is not allowed to change any information from other user, even if it is the same group?

Does anyone know how to solve it?

Tks.
 

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CALIFE.AUTH(5)						      BSD File Formats Manual						    CALIFE.AUTH(5)

NAME
calife.auth -- format of the calife authorization file DESCRIPTION
The calife.auth files are files consisting of newline separated records, one per user, containing three colon (``:'') separated fields. These fields are as follows: name User's login name / @group. shell User's shell user1,user2,...,usern List of logins allowed for the user name The name field is the login used to access the computer account. The login name must never begin with a hyphen (``-''); also, it is strongly suggested that neither upper-case characters or dots (``.'') be part of the name, as this tends to confuse mailers. No field may contain a colon (``:'') as this has been used historically to separate the fields in the user database. One alternative syntax is to use @group to specify that any user in the given group is allowed to use calife to become root. The shell field is the command interpreter the user prefers. If there is nothing in the shell field, the user's current shell as found in the (/etc/passwd) file is assumed. If the shell field is '*', then the account is considered as locked and access is denied. If the third parameter is specified, it is assumed to be the list of login the current user has the right to become. It enables use of calife for non-root only accounts. calife.auth is placed in /etc. EXAMPLE
# calife.auth-dist # # Format # # name[:shell_to_be_run][:user1,user2,usern] # fcb roberto:/bin/tcsh pb::guest,blaireau SEE ALSO
calife(1), su(1) HISTORY
A calife.auth file format appeared in DG/UX and SunOS, written for Antenne 2 in 1991. It has evolved with the extra shell specification. The login list was reintroduced in 2.7. AUTHOR
Ollivier Robert <roberto@keltia.frmug.fr.net> BSD
September 25, 1994 BSD
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