(web2c.info)newer invocation

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Enter node , (file) or (file)node

6.7 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 (see the perlop man
page) 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).