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Top Forums Shell Programming and Scripting Better to Delete or Overwrite Post 302774285 by MadeInGermany on Friday 1st of March 2013 01:50:52 PM
Old 03-01-2013
Creating a guessable tmp file in a public area like /tmp is a security risk.
It is safer to leave such a file, so the next time it is overwritten not created.
There a methods for a safer tmp file, see
Code:
man mktemp

Most safe is to avoid a tmp file. E.g. by using | and (sub shell).
 

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ns_tmp(3aolserver)					    AOLserver Built-In Commands 					ns_tmp(3aolserver)

__________________________________________________________________________________________________________________________________________________

NAME
ns_mktemp, ns_tmpnam - commands SYNOPSIS
ns_mktemp template ns_tmpnam _________________________________________________________________ DESCRIPTION
ns_mktemp returns a unique filename based on the template you specify. ns_tmpnam returns a filename that can safely be used for a tempo- rary file. The template for ns_mktemp should contain a string with six trailing Xs, which will be replaced with an alpha-numeric string of six charac- ters chosen to make the filename unique. If template does not end with six trailing Xs the empty string will be returned. ns_tmpnam calls the tmpnam() C library function, and the results will depend on your operating system. On Irix, for example, tmpnam() always generate a file name using the path-prefix defined as P_tmpdir in the header file which is "/var/tmp/". EXAMPLES
nscp> ns_tmpnam ;# On Linux /tmp/filevuLwaE nscp> ns_mktemp /tmp/foobar.XXXXXX /tmp/foobar.p6SlaC SEE ALSO
nsd(1), mktemp(3), tmpnam(3) KEYWORDS
AOLserver 4.0 ns_tmp(3aolserver)
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