$: ls -ltr /tmp
total 87120
-rw-r--r--    1 root     system         2206 Jul 23 2012  install_cltpkg_trace.12255278
-rw-r--r--    1 root     system         2165 Jul 23 2012  install_javapkg_trace.13893676
-rw-r--r--    1 root     system         2157 Jul 23 2012  install_jrepkg_trace.13893676
-rw-r--r--    1 root     system         3981 Jul 23 2012  SYMCnbp-inittab.12255278.i
...
$: ls -1tr /tmp 
install_cltpkg_trace.12255278
install_javapkg_trace.13893676
install_jrepkg_trace.13893676
SYMCnbp-inittab.12255278.i
SYMCnbclt-inittab.12255278.r
...
$: