3 yesterday, diffy \- print file names from the dump
23 prints the names of the
25 from the most recent dump.
26 Since dumps are done early in the morning,
27 yesterday's files are really in today's dump.
28 For example, if today is March 17, 1992,
37 /n/dump/1992/0317/adm/users
40 In fact, the implementation is to select the most recent dump in
41 the current year, so the dump selected may not be from today.
43 When presented with a path of the form
44 .BI /n/ fs / path \fR,
47 dump files of the form
48 \fL/n/\fIfs\fLdump/\fIyyyy\fL/\fIhhmm\fL/\fIpath\fR.
52 prints the names of the dump files corresponding to the named files.
53 The first set of options changes this behavior.
59 to compare the dump files with the named files.
62 Bind the dump files over the named files.
65 Copy the dump files over the named files.
68 Copy the dump files over the named files only when
74 to compare the dump files with the named files.
80 to compare the dump files with the named files.
84 option selects other day's dumps, with a format of
85 1, 2, 4, 6, or 8 digits of the form
95 option selects the dump
97 prior to the current day.
101 option selects the most recent snapshot instead of the most
102 recent archived dump. Snapshots may occur more frequently
106 does not guarantee that the string it prints represents an existing file.
111 with the given options
112 to compare yesterday's version of each of the named files
116 Back up to yesterday's MIPS binary of
120 yesterday -c /mips/bin/vc
123 Temporarily back up to March 1's MIPS C library to see if a program
124 runs correctly when loaded with it:
127 yesterday -b -0301 /mips/lib/libc.a
133 Find what has changed in the C library since March 1:
136 yesterday -d -0301 /sys/src/libc/port/*.c
139 Find what has changed in the source tree today:
156 It's hard to use this command without singing.