hist, history - print file names from the dump
hist [
-vdu ] [
-s yyyymmdd ]
files ...
Hist prints the names, dates, and sizes of all versions of the named
files, looking backwards in time, stored in the dump file system. If
the file exists in the main tree, the first line of output will be its current
state. For example,
-
hist ~rsc/.bash_history
produces
-
May 19 16:11:37 EDT 2005 /home/am3/rsc/.bash_history 6175
May 18 23:32:16 EDT 2005 /dump/am/2005/0519/home/am3/rsc/.bash_history 5156
May 17 23:32:31 EDT 2005 /dump/am/2005/0518/home/am3/rsc/.bash_history 5075
May 16 07:53:47 EDT 2005 /dump/am/2005/0517/home/am3/rsc/.bash_history 5065
The
-v option enables verbose debugging printout.
The
-d option causes
diff(1)
-c to be run for each adjacent
pair of dump files, while
-b runs
diff -cb.
The
-u option causes times to be printed in GMT (UT) rather than local
time.
Finally, the
-s option sets the starting (most recent) date for the
output.
Examine changes in block.c:
-
hist -d block.c
- /dump
- by convention, root of dump file system
/src/cmd/hist.c
yesterday(1),
vbackup(8)
Should be called
history, but that name is taken by
sh(1).