From: Theodore Ts'o (tytso@ATHENA.MIT.EDU)
Date: 03/11/92


From: tytso@ATHENA.MIT.EDU (Theodore Ts'o)
Subject: Re: Linux File System Document Revision 1.0
Date: Wed, 11 Mar 1992 06:28:53 GMT


   From: hpa@casbah.acns.nwu.edu (H. Peter Anvin N9ITP)
   Date: Wed, 11 Mar 1992 00:26:38 GMT

   On another question: what is the rationale behind /usr/tmp anyway? If
   /tmp is allowed to be an installable system anyway, why not make /tmp
   link to /usr/tmp if it is desirable to keep it on /usr?

   Am I missing something?

Yes. The difference is that /tmp is cleared upon reboot (in /etc/rc),
while /usr/tmp usually is not. Therefore, cryptographic materials used
by Kerberos and SPX would be put in /tmp, while editor preserve files
would be placed in /usr/tmp.

Most temporary files should go in /tmp, since they generally aren't
useful after the system reboots. There are some exceptions, though....

                                                - Ted