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)

Plan 9  —  March 27, 2001