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Top Forums UNIX for Dummies Questions & Answers HOw I can Know who Access my file!! Post 23267 by auswipe on Wednesday 19th of June 2002 06:10:01 PM
Old 06-19-2002
You could also write a shell script using lsof and grep out by the individual filename and append the grep output if found to another textfile. Although, I have to admit that it is not terribly effective.

Code:
#!/bin/sh

while true
  do
    sleep 1
    lsof | grep -i "MySpecialFile" >> paranoia.txt
done

Resulted in this output:

Code:
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile
vi        3703    auswipe    3rW VREG 116,131078        159 1411444 /usr/home/auswipe/paranoid/MySpecialFile

The cheezy little script wasn't able to pickup that elvis had opened the file (copied to temp file for manipulation) and because the file was so small, lsof with a one second interval wasn't able to catch the file being copied.

There is bound to be a better solution for this type problem. I would suggest Google for searching.
 

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.K5LOGIN(5)							File Formats Manual						       .K5LOGIN(5)

NAME
.k5login - Kerberos V5 acl file for host access. DESCRIPTION
The .k5login file, which resides in a user's home directory, contains a list of the Kerberos principals. Anyone with valid tickets for a principal in the file is allowed host access with the UID of the user in whose home directory the file resides. One common use is to place a .k5login file in root's home directory, thereby granting system administrators remote root access to the host via Kerberos. EXAMPLES
Suppose the user "alice" had a .k5login file in her home directory containing the following line: bob@FUBAR.ORG This would allow "bob" to use any of the Kerberos network applications, such as telnet(1), rlogin(1), rsh(1), and rcp(1), to access alice's account, using bob's Kerberos tickets. Let us further suppose that "alice" is a system administrator. Alice and the other system administrators would have their principals in root's .k5login file on each host: alice@BLEEP.COM joeadmin/root@BLEEP.COM This would allow either system administrator to log in to these hosts using their Kerberos tickets instead of having to type the root pass- word. Note that because "bob" retains the Kerberos tickets for his own principal, "bob@FUBAR.ORG", he would not have any of the privileges that require alice's tickets, such as root access to any of the site's hosts, or the ability to change alice's password. SEE ALSO
telnet(1), rlogin(1), rsh(1), rcp(1), ksu(1), telnetd(8), klogind(8) .K5LOGIN(5)
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