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Top Forums Shell Programming and Scripting sort truncates line when they contain nulls Post 302187760 by era on Tuesday 22nd of April 2008 02:29:01 AM
Old 04-22-2008
Quote:
Originally Posted by massrobe
I can not change the byte because it is part of my data.
The idea is to change it temporarily so sort can work, then change it back. You just need to take care to use a byte which doesn't occur in your data.

For example, octal \200 or \001 might work if they don't occur in the data file already. So you'd change the NULs to (something unique), sort, and change (something unique) back to NUL. Now the data should be sorted, with the NULs preserved.

(\200 might be problematic too, because it's NUL with the eight bit set, and some procedure might still live in 7-bit land and strip the 8th bit internally; try some other high-value byte between \201 and \377 if it doesn't work.)
 

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POPPASSD(8)															       POPPASSD(8)

NAME
poppassd - Password change server for Eudora and NUPOP mail clients DESCRIPTION
poppassd runs from inetd and listens on TCP port 106 by default. Its sole purpose in life is to engage in short FTP-like conversations from client applications and execute (or deny) remote password changes via the PAM facilities configured in /etc/pam.d/poppassd. The con- versation looks something like this: 200 poppassd v1.8.4 hello, who are you? user adconrad 200 Your password please. pass foo 200 Your new password please. newpass bar 200 Password changed, thank-you. quit 200 Bye. As can be seen from the example above, unencrypted passwords are transmitted over the network. Because of this, it is recommended that you use this daemon only for local loopback password changing (for instance, from Perl, Python, or PHP web applications on the same server) and block all non-local access to port 106, either via tcpwrappers (/etc/hosts.deny) or with appropriate firewall rules. If sending unencrypted passwords over the wire doesn't bug you terribly much (as in the case of an ISP with hundreds of POP3 mail accounts), this daemon can provide a simple way for some of your clients (those running mail clients that actually support this protocol) to easily change their passwords. FILES
/etc/pam.d/poppassd Contains the PAM configuration for poppassd. By default on Debian, it merely includes the common-auth and common-password files, which should work in most cases. If this doesn't cut it for your site, tailor to suit. SEE ALSO
pam(7), inetd(8), hosts.deny(5) AUTHOR
This manual page was written by Adam Conrad <adconrad@0c3.net> for the Debian operating system. Debian 19 March 2004 POPPASSD(8)
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