ettest:/opt/qipgen_log $cat /etc/mnttab
...
/dev/dsk/c0t9d0s0       /a      ufs     rw,intr,largefiles,xattr,onerror=panic,suid,dev=800040  1123102217
ettest:/opt/qipgen_log $perl -V | less
Summary of my perl5 (revision 5.0 version 6 subversion 1) configuration:
  Platform:
    osname=solaris, osvers=2.9, archname=sun4-solaris-64int
    uname='sunos localhost 5.9 sun4u sparc sunw,ultra-1'
... useperlio=undef d_sfio=undef uselargefiles=define usesocks=undef
...
  Compiler:
    cc='cc', ccflags ='-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',

##</code><code>##

 <br>
perl -ne '$prn++ if /18:04:54.631:/; print if $prn' FILENAME