Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

Re: Error "'exists ^0^' has chars not alphanumeric or underscore in perl"

by Rahul6990 (Beadle)
on Jan 25, 2013 at 04:58 UTC ( #1015265=note: print w/replies, xml ) Need Help??


in reply to Error "'exists ^0^' has chars not alphanumeric or underscore in perl"

Can you show where are you using not exists
  • Comment on Re: Error "'exists ^0^' has chars not alphanumeric or underscore in perl"

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1015265]
help
Chatterbox?
[Corion]: Ah - if that information is saved in a file, then you could theoretically spam that file and confuse getlogin(). So, don't use it for authentication :)
[tye]: that is what getlogin() certainly *used* to do. I don't believe that is what it certainly should do.
[davido]: /var/run/utmp is 664 i think.
[tye]: Note that my "man getlogin" says that it uses stdin when it should use /dev/tty (calling a glibc bug). But that does not appear to be the case when I test it. But maybe Perl's getlogin() is not using glibc's getlogin().
[oiskuu]: well, run a strace and see what the getlogin does for you.... As I said. SELinux probably has those security labels. But not regular linux.
[tye]: for example, read https://unix. stackexchange.com/ questions/146138/ loginuid-should-be -allowed-to-change -or-not-mutable-or -not
[tye]: I'm not using SELinux and it certainly appears to disagree with you. shrug
[tye]: Since you brought up /proc, oiskuu, I didn't see you respond to my suggestion of 'loginuid'. Does your /proc not have such?

How do I use this? | Other CB clients
Other Users?
Others chanting in the Monastery: (6)
As of 2017-06-23 19:46 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    How many monitors do you use while coding?















    Results (554 votes). Check out past polls.