TH HISTORY 1
SH NAME
history \- print file names from the dump
SH SYNOPSIS
B history
[
B -vDu
] [
B -d
I dumpfilesystem
] [
B -s
I yymmdd
]
I files ...
SH DESCRIPTION
I History
prints the names, dates, and sizes of all versions of the named
IR files ,
looking backwards in time,
stored in the dump file system.
For example,
IP
EX
history /adm/users
EE
PP
produces
IP
EX
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
       ...
EE
PP
The
B -v
option enables verbose debugging printout.
PP
The
B -D
option causes
IR diff (1)
B -n
to be run for each adjacent pair of files, while
B -b
runs
IR diff
BR -nb .
PP
The
B -u
option causes times to be printed in GMT (UT) rather than local time.
PP
The
B -d
option selects some other dump filesystem such as
IR /n/bootesdump .
PP
Finally, the
B -s
option
sets the starting (most recent) date for the output.
SH EXAMPLES
PP
Check how often a user has been logged in.
IP
EX
history /usr/ches/tmp
EE
SH FILES
B /n/dump
SH SOURCE
B /sys/src/cmd/history.c
SH SEE ALSO
IR fs (4)
br
IR yesterday (1)

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