HIST(1): dump history
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     USAGE

         usage: hist [-Dacdflu] [-p dumpdir] [-w date] [-x cmd] {file}
             -D: debug
             -a: list all copies that differ, not just the last one.
             -c: copy the file from the dump
             -d: print file differences
             -f: force search past file removals
             -l: produce a long listing (or print just the name)
             -p dumpdir: path to dump (default is /dump or /u/dump)
             -u: unix IO
             -w date: backward search start time (default is now)
             -x cmd: print  lines  to  execute  this  command  between
     versions

     DESCRIPTION

      hist digs in the dump to list file history. By default it prints
     the path in the dump for the last version of the input files.

     The dump is assumed to be in /dump  or  /u/dump  unless  flag  -p
     tells  otherwise.  The only dumped trees known are /zx, dumped at
     /dump, and /u/* directories, dumped at /u/dump.

     EXAMPLE

     Locate in the dump all go sources for  files  under  the  current
     directory:

         ; lf ,~*.go | hist

     Print all recorded changes made to hist.go:

         ; hist -ad hist.go

     SOURCE

     +o    /zx/sys/src/clive/cmd/hist

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      User's manual. Section 1. Copyright © LSUB 2014-2016