Difference between revisions of "Ns mktemp"
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: Note that some implementations of mktemp are not so safe - it creates predictable/only a small number of variations - please consult your system's man pages if this might be an issue to you. AOLserver could potentially be improved to use mkstemp instead. | : Note that some implementations of mktemp are not so safe - it creates predictable/only a small number of variations - please consult your system's man pages if this might be an issue to you. AOLserver could potentially be improved to use mkstemp instead. | ||
| − | : WARNING: On Windows, ns_mktemp has the following behavior that may not be | + | : WARNING: On Windows, ns_mktemp has the following behavior that may not be immediately obvious: |
| − | * multiple calls in the same thread return exact same name until a file is actually created with that name | + | :* multiple calls in the same thread return exact same name until a file is actually created with that name |
| − | * there are only 26 unique combinations per thread id for a given template | + | :* there are only 26 unique combinations per thread id for a given template |
'''EXAMPLES''' | '''EXAMPLES''' | ||
Latest revision as of 21:37, 3 October 2009
Man page: http://aolserver.com/docs/tcl/ns_mktemp.html
NAME
- ns_mktemp - Make a unique temporary file name
SYNOPSIS
- ns_mktemp template
DESCRIPTION
- This command is a wrapper around the mktemp(3) function in the C standard library. It takes a template, which is a string whose last six characters must be XXXXXX, and returns a new string where those are replaced with random characters such as to make the string a unique file name. It is commonly used to safely create temporary files.
- Note that some implementations of mktemp are not so safe - it creates predictable/only a small number of variations - please consult your system's man pages if this might be an issue to you. AOLserver could potentially be improved to use mkstemp instead.
- WARNING: On Windows, ns_mktemp has the following behavior that may not be immediately obvious:
- multiple calls in the same thread return exact same name until a file is actually created with that name
- there are only 26 unique combinations per thread id for a given template
EXAMPLES
% ns_mktemp /tmp/aol-XXXXXX /tmp/aol-rhaGGx
SEE ALSO
