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(web2c.info)newer invocation

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Enter node , (file) or (file)node

Newer: Compare file modification times
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  Newer compares file modification times.  Synopsis:

     newer SRC DEPENDENT

Newer exits successfully if the file SRC exists and is older as
DEPENDENT, i.e., the modification time (mtime) of SRC is greater than
that of DEPENDENT.  Note: Attribute Meanings.

  Although this could be written as a Perl script (Note: File
Operations.) or using the `--full-time' option
supported by `ls' (Note: ls invocation.), it
seems undesirable to depend on such independent, and sadly
non-universal, programs.

  This is used by MakeMPX (Note: makempx invocation).