HISTORY(1)                                             HISTORY(1)

     NAME
          history - print file names from the dump

     SYNOPSIS
          history [ -vDu ] [ -d dumpfilesystem ] [ -s yymmdd ] files
          ...

     DESCRIPTION
          History prints the names, dates, and sizes of all versions
          of the named files, looking backwards in time, stored in the
          dump file system.  For example,

               history /adm/users

          produces

               Jan  5 18:24:05 EST 1998 /adm/users 6945
               Dec 19 10:16:06 EST 1997 /n/dump/1998/0105/adm/users 6945
               Dec 16 11:37:12 EST 1997 /n/dump/1997/1219/adm/users 6926
               Dec  3 15:46:00 EST 1997 /n/dump/1997/1216/adm/users 6910
                    ...

          The -v option enables verbose debugging printout.

          The -D option causes diff(1) -n to be run for each adjacent
          pair of files, while -b runs diff -nb.

          The -u option causes times to be printed in GMT (UT) rather
          than local time.

          The -d option selects some other dump filesystem such as
          /n/bootesdump.

          Finally, the -s option sets the starting (most recent) date
          for the output.

     EXAMPLES
          Check how often a user has been logged in.

               history /usr/ches/tmp

     FILES
          /n/dump

     SOURCE
          /sys/src/cmd/history.c

     SEE ALSO
          fs(4)
          yesterday(1)

     Page 1                       Plan 9             (printed 3/14/26)